完成权限管理分类

app/__init__.py

@@ -1,6 +1,7 @@
 from flask import Flask, render_template, session, g, Markup, redirect, url_for
 from flask_login import LoginManager
-from app.models.user import db, User
+from app.models.database import db
+from app.models.user import User
 from app.controllers.user import user_bp
 from app.controllers.book import book_bp
 from app.controllers.borrow import borrow_bp

app/controllers/announcement.py

@@ -1,10 +1,11 @@
 from flask import Blueprint, render_template, request, redirect, url_for, flash, jsonify
 from app.models.announcement import Announcement
 from app.models.log import Log
-from app.utils.auth import admin_required
+from app.utils.auth import permission_required  # 修改导入
 from flask_login import login_required, current_user
 from datetime import datetime
 from app.models.notification import Notification
+from app import db  # 为mark_all_as_read函数添加db导入
 
 # 创建蓝图
 announcement_bp = Blueprint('announcement', __name__)
@@ -41,7 +42,7 @@ def announcement_detail(announcement_id):
 
 @announcement_bp.route('/manage', methods=['GET'])
 @login_required
-@admin_required
+@permission_required('manage_announcements')  # 替代 @admin_required
 def manage_announcements():
     """管理员公告管理页面"""
     page = request.args.get('page', 1, type=int)
@@ -86,7 +87,7 @@ def manage_announcements():
 
 @announcement_bp.route('/add', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('manage_announcements')  # 替代 @admin_required
 def add_announcement():
     """添加公告"""
     if request.method == 'POST':
@@ -127,7 +128,7 @@ def add_announcement():
 
 @announcement_bp.route('/edit/<int:announcement_id>', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('manage_announcements')  # 替代 @admin_required
 def edit_announcement(announcement_id):
     """编辑公告"""
     announcement = Announcement.get_announcement_by_id(announcement_id)
@@ -174,7 +175,7 @@ def edit_announcement(announcement_id):
 
 @announcement_bp.route('/status/<int:announcement_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_announcements')  # 替代 @admin_required
 def change_status(announcement_id):
     """更改公告状态"""
     data = request.get_json()
@@ -209,7 +210,7 @@ def change_status(announcement_id):
 
 @announcement_bp.route('/top/<int:announcement_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_announcements')  # 替代 @admin_required
 def change_top_status(announcement_id):
     """更改公告置顶状态"""
     data = request.get_json()

app/controllers/book.py

@@ -1,21 +1,21 @@
 from flask import Blueprint, render_template, request, redirect, url_for, flash, current_app, jsonify
 from app.models.book import Book, Category
 from app.models.user import db
-from app.utils.auth import login_required, admin_required
-from flask_login import current_user  # 移除重复的 login_required 导入
+from app.utils.auth import login_required, permission_required  # 修改导入，替换admin_required为permission_required
+from flask_login import current_user
 import os
 from werkzeug.utils import secure_filename
 import datetime
 import pandas as pd
 import uuid
-from app.models.log import Log  # 导入日志模型
+from app.models.log import Log
 
 book_bp = Blueprint('book', __name__)
 
 
 @book_bp.route('/admin/list')
 @login_required
-@admin_required
+@permission_required('manage_books')  # 替换 @admin_required
 def admin_book_list():
     print(f"DEBUG: admin_book_list 函数被调用，用户={current_user.username}，认证状态={current_user.is_authenticated}")
     page = request.args.get('page', 1, type=int)
@@ -62,11 +62,11 @@ def admin_book_list():
                            category_id=category_id,
                            sort=sort,
                            order=order,
-                           current_user=current_user,  # 使用current_user替代g.user
-                           is_admin_view=True)  # 指明这是管理视图
+                           current_user=current_user,
+                           is_admin_view=True)
 
 
-# 图书列表页面
+# 图书列表页面 - 不需要修改，已经只有@login_required
 @book_bp.route('/list')
 @login_required
 def book_list():
@@ -122,10 +122,10 @@ def book_list():
                            category_id=category_id,
                            sort=sort,
                            order=order,
-                           current_user=current_user)  # 使用current_user替代g.user
+                           current_user=current_user)
 
 
-# 图书详情页面
+# 图书详情页面 - 不需要修改，已经只有@login_required
 @book_bp.route('/detail/<int:book_id>')
 @login_required
 def book_detail(book_id):
@@ -164,7 +164,7 @@ def book_detail(book_id):
 # 添加图书页面
 @book_bp.route('/add', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('manage_books')  # 替换 @admin_required
 def add_book():
     if request.method == 'POST':
         title = request.form.get('title')
@@ -269,7 +269,7 @@ def add_book():
                     change_type='入库',
                     change_amount=stock,
                     after_stock=stock,
-                    operator_id=current_user.id,  # 使用current_user.id替代g.user.id
+                    operator_id=current_user.id,
                     remark='新书入库',
                     changed_at=datetime.datetime.now()
                 )
@@ -329,7 +329,7 @@ def add_book():
 # 编辑图书
 @book_bp.route('/edit/<int:book_id>', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('manage_books')  # 替换 @admin_required
 def edit_book(book_id):
     book = Book.query.get_or_404(book_id)
 
@@ -422,7 +422,7 @@ def edit_book(book_id):
                 change_type=change_type,
                 change_amount=abs(change_amount),
                 after_stock=new_stock,
-                operator_id=current_user.id,  # 使用current_user.id替代g.user.id
+                operator_id=current_user.id,
                 remark=f'管理员编辑图书库存 - {book.title}',
                 changed_at=datetime.datetime.now()
             )
@@ -500,7 +500,7 @@ def edit_book(book_id):
 # 删除图书
 @book_bp.route('/delete/<int:book_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_books')  # 替换 @admin_required
 def delete_book(book_id):
     book = Book.query.get_or_404(book_id)
 
@@ -541,7 +541,7 @@ def delete_book(book_id):
 # 图书分类管理
 @book_bp.route('/categories', methods=['GET'])
 @login_required
-@admin_required
+@permission_required('manage_categories')  # 替换 @admin_required
 def category_list():
     categories = Category.query.all()
 
@@ -559,7 +559,7 @@ def category_list():
 # 添加分类
 @book_bp.route('/categories/add', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_categories')  # 替换 @admin_required
 def add_category():
     name = request.form.get('name')
     parent_id = request.form.get('parent_id') or None
@@ -586,7 +586,7 @@ def add_category():
 # 编辑分类
 @book_bp.route('/categories/edit/<int:category_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_categories')  # 替换 @admin_required
 def edit_category(category_id):
     category = Category.query.get_or_404(category_id)
 
@@ -622,7 +622,7 @@ def edit_category(category_id):
 # 删除分类
 @book_bp.route('/categories/delete/<int:category_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_categories')  # 替换 @admin_required
 def delete_category(category_id):
     category = Category.query.get_or_404(category_id)
 
@@ -675,7 +675,7 @@ def delete_category(category_id):
 # 批量导入图书
 @book_bp.route('/import', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('import_export_books')  # 替换 @admin_required
 def import_books():
     if request.method == 'POST':
         if 'file' not in request.files:
@@ -741,7 +741,7 @@ def import_books():
                                 change_type='入库',
                                 change_amount=book.stock,
                                 after_stock=book.stock,
-                                operator_id=current_user.id,  # 使用current_user.id
+                                operator_id=current_user.id,
                                 remark='批量导入图书',
                                 changed_at=datetime.datetime.now()
                             )
@@ -784,13 +784,13 @@ def import_books():
             flash('只支持Excel文件(.xlsx, .xls)', 'danger')
             return redirect(request.url)
 
-    return render_template('book/import.html', current_user=current_user)  # 使用current_user
+    return render_template('book/import.html', current_user=current_user)
 
 
 # 导出图书
 @book_bp.route('/export')
 @login_required
-@admin_required
+@permission_required('import_export_books')  # 替换 @admin_required
 def export_books():
     # 获取查询参数
     search = request.args.get('search', '')
@@ -871,8 +871,7 @@ def test_permissions():
     """
 
 
-# 添加到app/controllers/book.py文件中
-
+# 图书浏览页面 - 不需要修改，已经只有@login_required
 @book_bp.route('/browse')
 @login_required
 def browse_books():
@@ -927,12 +926,12 @@ def browse_books():
                            categories=categories,
                            category_id=category_id,
                            sort=sort,
-                           order=order)  # current_user自动传递到模板
+                           order=order)
 
 
 @book_bp.route('/template/download')
 @login_required
-@admin_required
+@permission_required('import_export_books')  # 替换 @admin_required
 def download_template():
     """生成并下载Excel图书导入模板"""
     # 创建一个简单的DataFrame作为模板

app/controllers/borrow.py

@@ -6,7 +6,7 @@ from app.models.inventory import InventoryLog
 from app.models.user import db, User
 from app.models.log import Log  # 导入日志模型
 import datetime
-from app.utils.auth import admin_required
+from app.utils.auth import permission_required  # 修改导入，使用permission_required而不是admin_required
 
 # 创建借阅蓝图
 borrow_bp = Blueprint('borrow', __name__, url_prefix='/borrow')
@@ -191,7 +191,7 @@ def return_book(borrow_id):
     borrow_record = BorrowRecord.query.get_or_404(borrow_id)
 
     # 检查是否是自己的借阅记录或者是管理员
-    if borrow_record.user_id != current_user.id and current_user.role_id != 1:
+    if borrow_record.user_id != current_user.id and not current_user.has_permission('manage_borrows'):
         return jsonify({
             'success': False,
             'message': '您无权执行此操作'
@@ -268,7 +268,7 @@ def renew_book(borrow_id):
     borrow_record = BorrowRecord.query.get_or_404(borrow_id)
 
     # 检查是否是自己的借阅记录或者是管理员
-    if borrow_record.user_id != current_user.id and current_user.role_id != 1:
+    if borrow_record.user_id != current_user.id and not current_user.has_permission('manage_borrows'):
         return jsonify({
             'success': False,
             'message': '您无权执行此操作'
@@ -376,7 +376,7 @@ def my_borrows():
 
 @borrow_bp.route('/manage')
 @login_required
-@admin_required
+@permission_required('manage_borrows')  # 替代 @admin_required
 def manage_borrows():
     """管理员查看所有借阅记录"""
     page = request.args.get('page', 1, type=int)
@@ -444,7 +444,7 @@ def manage_borrows():
 
 @borrow_bp.route('/admin/add', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_borrows')  # 替代 @admin_required
 def admin_add_borrow():
     """管理员为用户添加借阅记录"""
     user_id = request.form.get('user_id', type=int)
@@ -532,7 +532,7 @@ def admin_add_borrow():
 
 @borrow_bp.route('/overdue')
 @login_required
-@admin_required
+@permission_required('manage_overdue')  # 替代 @admin_required
 def overdue_borrows():
     """查看逾期借阅"""
     page = request.args.get('page', 1, type=int)
@@ -566,7 +566,7 @@ def overdue_borrows():
 
 @borrow_bp.route('/overdue/notify/<int:borrow_id>', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('manage_overdue')  # 替代 @admin_required
 def notify_overdue(borrow_id):
     """发送逾期通知"""
     from app.models.notification import Notification

app/controllers/inventory.py

@@ -5,7 +5,7 @@ from app.models.book import Book
 from app.models.inventory import InventoryLog
 from app.models.log import Log  # 导入日志模型
 from app.models.user import db
-from app.utils.auth import admin_required
+from app.utils.auth import permission_required  # 修改导入，使用permission_required替代admin_required
 from datetime import datetime
 
 inventory_bp = Blueprint('inventory', __name__, url_prefix='/inventory')
@@ -13,9 +13,9 @@ inventory_bp = Blueprint('inventory', __name__, url_prefix='/inventory')
 
 @inventory_bp.route('/')
 @login_required
-@admin_required
+@permission_required('manage_inventory')  # 替代 @admin_required
 def inventory_list():
-    """库存管理页面 - 只有管理员有权限进入"""
+    """库存管理页面 - 只有拥有库存管理权限的用户有权限进入"""
     page = request.args.get('page', 1, type=int)
     per_page = request.args.get('per_page', 20, type=int)
 
@@ -47,7 +47,7 @@ def inventory_list():
         user_id=current_user.id,
         target_type="inventory",
         ip_address=request.remote_addr,
-        description=f"管理员访问库存管理页面，搜索条件：{search if search else '无'}"
+        description=f"用户访问库存管理页面，搜索条件：{search if search else '无'}"
     )
 
     return render_template('inventory/list.html',
@@ -60,7 +60,7 @@ def inventory_list():
 
 @inventory_bp.route('/adjust/<int:book_id>', methods=['GET', 'POST'])
 @login_required
-@admin_required
+@permission_required('manage_inventory')  # 替代 @admin_required
 def adjust_inventory(book_id):
     """调整图书库存"""
     book = Book.query.get_or_404(book_id)
@@ -73,7 +73,7 @@ def adjust_inventory(book_id):
             target_type="book",
             target_id=book.id,
             ip_address=request.remote_addr,
-            description=f"管理员查看图书《{book.title}》的库存调整页面"
+            description=f"用户查看图书《{book.title}》的库存调整页面"
         )
 
     if request.method == 'POST':
@@ -123,7 +123,7 @@ def adjust_inventory(book_id):
                 target_type="book",
                 target_id=book.id,
                 ip_address=request.remote_addr,
-                description=f"管理员对图书《{book.title}》进行{operation_desc}操作，数量：{change_amount}，"
+                description=f"用户对图书《{book.title}》进行{operation_desc}操作，数量：{change_amount}，"
                             f"原库存：{original_stock}，现库存：{after_stock}，备注：{remark}"
             )
 
@@ -140,7 +140,7 @@ def adjust_inventory(book_id):
 
 @inventory_bp.route('/logs')
 @login_required
-@admin_required
+@permission_required('manage_inventory')  # 替代 @admin_required
 def inventory_logs():
     """查看库存变动日志"""
     page = request.args.get('page', 1, type=int)
@@ -189,7 +189,7 @@ def inventory_logs():
         user_id=current_user.id,
         target_type="inventory_log",
         ip_address=request.remote_addr,
-        description=f"管理员查看库存变动日志，筛选条件：{', '.join(filter_desc) if filter_desc else '无'}"
+        description=f"用户查看库存变动日志，筛选条件：{', '.join(filter_desc) if filter_desc else '无'}"
     )
 
     return render_template('inventory/logs.html',
@@ -205,7 +205,7 @@ def inventory_logs():
 
 @inventory_bp.route('/book/<int:book_id>/logs')
 @login_required
-@admin_required
+@permission_required('manage_inventory')  # 替代 @admin_required
 def book_inventory_logs(book_id):
     """查看特定图书的库存变动日志"""
     book = Book.query.get_or_404(book_id)
@@ -223,7 +223,7 @@ def book_inventory_logs(book_id):
         target_type="book",
         target_id=book.id,
         ip_address=request.remote_addr,
-        description=f"管理员查看图书《{book.title}》的库存变动日志"
+        description=f"用户查看图书《{book.title}》的库存变动日志"
     )
 
     return render_template('inventory/book_logs.html',

app/controllers/log.py

@@ -2,7 +2,7 @@ from flask import Blueprint, render_template, request, jsonify
 from flask_login import current_user, login_required
 from app.models.log import Log
 from app.models.user import User, db  # 导入db
-from app.controllers.user import admin_required  # 导入admin_required装饰器
+from app.utils.auth import permission_required  # 更改为导入permission_required装饰器
 from datetime import datetime, timedelta
 
 # 创建蓝图
@@ -11,7 +11,7 @@ log_bp = Blueprint('log', __name__, url_prefix='/log')
 
 @log_bp.route('/list')
 @login_required
-@admin_required
+@permission_required('view_logs')  # 替代 @admin_required
 def log_list():
     """日志列表页面"""
     # 获取筛选参数
@@ -81,7 +81,7 @@ def log_list():
 
 @log_bp.route('/detail/<int:log_id>')
 @login_required
-@admin_required
+@permission_required('view_logs')  # 替代 @admin_required
 def log_detail(log_id):
     """日志详情页面"""
     log = Log.query.get_or_404(log_id)
@@ -90,7 +90,7 @@ def log_detail(log_id):
 
 @log_bp.route('/api/export', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('view_logs')  # 替代 @admin_required
 def export_logs():
     """导出日志API"""
     import csv
@@ -171,7 +171,7 @@ def export_logs():
 
 @log_bp.route('/api/clear', methods=['POST'])
 @login_required
-@admin_required
+@permission_required('view_logs')  # 替代 @admin_required
 def clear_logs():
     """清空日志API"""
     data = request.get_json()

app/controllers/statistics.py

@@ -4,7 +4,7 @@ from flask_login import login_required, current_user
 from app.models.book import Book, db
 from app.models.borrow import BorrowRecord
 from app.models.user import User
-from app.utils.auth import admin_required
+from app.utils.auth import permission_required  # 修改为导入permission_required
 from app.models.log import Log  # 导入日志模型
 from sqlalchemy import func, case, desc, and_
 from datetime import datetime, timedelta
@@ -15,7 +15,7 @@ statistics_bp = Blueprint('statistics', __name__, url_prefix='/statistics')
 
 @statistics_bp.route('/')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def index():
     """统计分析首页"""
     # 记录访问统计分析首页的日志
@@ -30,7 +30,7 @@ def index():
 
 @statistics_bp.route('/book-ranking')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def book_ranking():
     """热门图书排行榜页面"""
     # 记录访问热门图书排行的日志
@@ -45,7 +45,7 @@ def book_ranking():
 
 @statistics_bp.route('/api/book-ranking')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def api_book_ranking():
     """获取热门图书排行数据API"""
     time_range = request.args.get('time_range', 'month')
@@ -98,7 +98,7 @@ def api_book_ranking():
 
 @statistics_bp.route('/borrow-statistics')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def borrow_statistics():
     """借阅统计分析页面"""
     # 记录访问借阅统计分析的日志
@@ -113,7 +113,7 @@ def borrow_statistics():
 
 @statistics_bp.route('/api/borrow-trend')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def api_borrow_trend():
     """获取借阅趋势数据API"""
     time_range = request.args.get('time_range', 'month')
@@ -252,7 +252,7 @@ def api_borrow_trend():
 
 @statistics_bp.route('/api/category-distribution')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def api_category_distribution():
     """获取图书分类分布数据API"""
     # 记录获取图书分类分布数据的日志
@@ -295,7 +295,7 @@ def api_category_distribution():
 
 @statistics_bp.route('/user-activity')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def user_activity():
     """用户活跃度分析页面"""
     # 记录访问用户活跃度分析的日志
@@ -310,7 +310,7 @@ def user_activity():
 
 @statistics_bp.route('/api/user-activity')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def api_user_activity():
     """获取用户活跃度数据API"""
     # 记录获取用户活跃度数据的日志
@@ -347,7 +347,7 @@ def api_user_activity():
 
 @statistics_bp.route('/overdue-analysis')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def overdue_analysis():
     """逾期分析页面"""
     # 记录访问逾期分析的日志
@@ -362,7 +362,7 @@ def overdue_analysis():
 
 @statistics_bp.route('/api/overdue-statistics')
 @login_required
-@admin_required
+@permission_required('view_statistics')  # 替代 @admin_required
 def api_overdue_statistics():
     """获取逾期统计数据API"""
     # 记录获取逾期统计数据的日志

app/controllers/user.py

@@ -492,21 +492,89 @@ def role_list():
     return render_template('user/roles.html', roles=roles)
 
 
-# 创建/编辑角色API
+# 获取所有系统权限的API
+@user_bp.route('/permissions', methods=['GET'])
+@login_required
+@admin_required
+def get_permissions():
+    """获取所有可用的系统权限"""
+    from app.models.permission import Permission
+
+    try:
+        permissions = Permission.query.order_by(Permission.code).all()
+
+        # 转换为JSON格式
+        permissions_data = [{
+            'id': p.id,
+            'code': p.code,
+            'name': p.name,
+            'description': p.description
+        } for p in permissions]
+
+        return jsonify({
+            'success': True,
+            'permissions': permissions_data
+        })
+    except Exception as e:
+        logging.error(f"获取权限列表失败: {str(e)}")
+        return jsonify({
+            'success': False,
+            'message': f"获取权限列表失败: {str(e)}"
+        }), 500
+
+
+# 获取特定角色的权限
+@user_bp.route('/role/<int:role_id>/permissions', methods=['GET'])
+@login_required
+@admin_required
+def get_role_permissions(role_id):
+    """获取指定角色的权限ID列表"""
+    from app.models.user import Role
+
+    try:
+        role = Role.query.get(role_id)
+        if not role:
+            return jsonify({
+                'success': False,
+                'message': '角色不存在'
+            }), 404
+
+        # 获取角色的所有权限ID
+        permissions = [p.id for p in role.permissions]
+
+        return jsonify({
+            'success': True,
+            'permissions': permissions
+        })
+    except Exception as e:
+        logging.error(f"获取角色权限失败: {str(e)}")
+        return jsonify({
+            'success': False,
+            'message': f"获取角色权限失败: {str(e)}"
+        }), 500
+
+
+# 修改角色保存路由，支持权限管理
 @user_bp.route('/role/save', methods=['POST'])
 @login_required
 @admin_required
 def role_save():
+    """创建或更新角色，包括权限分配"""
     data = request.get_json()
     role_id = data.get('id')
     role_name = data.get('role_name')
     description = data.get('description')
+    permission_ids = data.get('permissions', [])  # 获取权限ID列表
 
     if not role_name:
         return jsonify({'success': False, 'message': '角色名不能为空'})
 
-    if role_id:  # 更新
-        success, message = UserService.update_role(role_id, role_name, description)
+    # 处理系统内置角色的权限保护
+    if role_id and int(role_id) in [1, 2]:
+        permission_ids = None  # 不修改内置角色的权限
+
+    if role_id:  # 更新角色
+        success, message = UserService.update_role(role_id, role_name, description, permission_ids)
         if success:
             # 记录编辑角色日志
             Log.add_log(
@@ -515,15 +583,12 @@ def role_save():
                 target_type="角色",
                 target_id=role_id,
                 ip_address=request.remote_addr,
-                description=f"管理员 {current_user.username} 编辑角色 {role_name}"
+                description=f"管理员 {current_user.username} 编辑角色 {role_name}，包含权限设置"
             )
-    else:  # 创建
-        success, message = UserService.create_role(role_name, description)
+    else:  # 创建角色
+        success, message, new_role_id = UserService.create_role(role_name, description, permission_ids)
         if success:
-            # 获取新创建的角色ID
-            new_role = db.session.query(User.Role).filter_by(role_name=role_name).first()
-            role_id = new_role.id if new_role else None
-
+            role_id = new_role_id
             # 记录创建角色日志
             Log.add_log(
                 action="创建角色",
@@ -531,13 +596,72 @@ def role_save():
                 target_type="角色",
                 target_id=role_id,
                 ip_address=request.remote_addr,
-                description=f"管理员 {current_user.username} 创建新角色 {role_name}"
+                description=f"管理员 {current_user.username} 创建新角色 {role_name}，设置了 {len(permission_ids)} 个权限"
             )
 
     return jsonify({'success': success, 'message': message})
 
 
-@user_bp.route('/user/role/<int:role_id>/count', methods=['GET'])
+# 角色删除API
+@user_bp.route('/role/delete/<int:role_id>', methods=['POST'])
+@login_required
+@admin_required
+def role_delete(role_id):
+    """删除角色"""
+    # 保护系统内置角色
+    if role_id in [1, 2]:
+        return jsonify({
+            'success': False,
+            'message': '不能删除系统内置角色'
+        })
+
+    from app.models.user import Role
+
+    try:
+        # 获取角色信息用于日志记录
+        role = Role.query.get(role_id)
+        if not role:
+            return jsonify({
+                'success': False,
+                'message': '角色不存在'
+            }), 404
+
+        role_name = role.role_name
+
+        # 检查是否有用户在使用该角色
+        user_count = User.query.filter_by(role_id=role_id).count()
+        if user_count > 0:
+            return jsonify({
+                'success': False,
+                'message': f'无法删除：该角色下存在 {user_count} 个用户'
+            })
+
+        # 删除角色
+        db.session.delete(role)
+        db.session.commit()
+
+        # 记录删除角色日志
+        Log.add_log(
+            action="删除角色",
+            user_id=current_user.id,
+            target_type="角色",
+            ip_address=request.remote_addr,
+            description=f"管理员 {current_user.username} 删除了角色 {role_name}"
+        )
+
+        return jsonify({
+            'success': True,
+            'message': '角色删除成功'
+        })
+    except Exception as e:
+        db.session.rollback()
+        logging.error(f"删除角色失败: {str(e)}")
+        return jsonify({
+            'success': False,
+            'message': f"删除角色失败: {str(e)}"
+        }), 500
+
+@user_bp.route('/role/<int:role_id>/count', methods=['GET'])
 @login_required
 @admin_required
 def get_role_user_count(role_id):

app/init_permissions.py

@@ -0,0 +1,103 @@
+from app import create_app
+from app.models.database import db
+from app.models.user import Role
+from app.models.permission import Permission
+import logging
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+def init_permissions():
+    """初始化系统权限"""
+    logger.info("开始初始化系统权限...")
+
+    # 只定义管理类权限，对应现有的 @admin_required 装饰的路由
+    permissions = [
+        # 公告管理权限
+        {'code': 'manage_announcements', 'name': '公告管理', 'description': '允许管理系统公告（发布、编辑、删除、置顶等）'},
+
+        # 图书管理权限
+        {'code': 'manage_books', 'name': '图书管理', 'description': '允许管理图书（添加、编辑、删除图书）'},
+        {'code': 'manage_categories', 'name': '分类管理', 'description': '允许管理图书分类'},
+        {'code': 'import_export_books', 'name': '导入导出图书', 'description': '允许批量导入和导出图书数据'},
+
+        # 借阅管理权限
+        {'code': 'manage_borrows', 'name': '借阅管理', 'description': '允许管理全系统借阅记录和处理借还书操作'},
+        {'code': 'manage_overdue', 'name': '逾期管理', 'description': '允许查看和处理逾期借阅'},
+
+        # 库存管理权限
+        {'code': 'manage_inventory', 'name': '库存管理', 'description': '允许查看和调整图书库存'},
+
+        # 日志权限
+        {'code': 'view_logs', 'name': '查看日志', 'description': '允许查看系统操作日志'},
+
+        # 统计权限
+        {'code': 'view_statistics', 'name': '查看统计', 'description': '允许查看统计分析数据'},
+
+        # 用户管理权限
+        {'code': 'manage_users', 'name': '用户管理', 'description': '允许管理用户（添加、编辑、禁用、删除用户）'},
+        {'code': 'manage_roles', 'name': '角色管理', 'description': '允许管理角色和权限'},
+    ]
+
+    # 添加权限记录
+    added_count = 0
+    updated_count = 0
+
+    for perm_data in permissions:
+        # 检查权限是否已存在
+        existing_perm = Permission.query.filter_by(code=perm_data['code']).first()
+
+        if existing_perm:
+            # 更新现有权限信息
+            existing_perm.name = perm_data['name']
+            existing_perm.description = perm_data['description']
+            updated_count += 1
+        else:
+            # 创建新权限
+            permission = Permission(**perm_data)
+            db.session.add(permission)
+            added_count += 1
+
+    # 提交所有权限
+    db.session.commit()
+    logger.info(f"权限初始化完成: 新增 {added_count} 个, 更新 {updated_count} 个")
+
+    # 处理角色权限分配
+    assign_role_permissions()
+
+
+def assign_role_permissions():
+    """为系统默认角色分配权限"""
+    logger.info("开始分配角色权限...")
+
+    # 获取所有权限
+    all_permissions = Permission.query.all()
+
+    # 获取系统内置角色
+    admin_role = Role.query.get(1)  # 管理员角色
+    user_role = Role.query.get(2)  # 普通用户角色
+
+    if admin_role and user_role:
+        # 管理员拥有所有权限
+        admin_role.permissions = all_permissions
+
+        # 普通用户无需特殊管理权限
+        user_role.permissions = []
+
+        db.session.commit()
+        logger.info(f"管理员角色分配了 {len(all_permissions)} 个权限")
+        logger.info(f"普通用户角色无管理权限")
+    else:
+        logger.error("无法找到内置角色，请确保角色表已正确初始化")
+
+
+def main():
+    """主函数"""
+    app = create_app()
+    with app.app_context():
+        init_permissions()
+
+
+if __name__ == "__main__":
+    main()

app/models/database.py

@@ -0,0 +1,4 @@
+from flask_sqlalchemy import SQLAlchemy
+
+# 创建共享的SQLAlchemy实例
+db = SQLAlchemy()

app/models/permission.py

@@ -0,0 +1,20 @@
+from app.models.database import db
+from datetime import datetime
+
+# 这是权限表 model
+class Permission(db.Model):
+    __tablename__ = 'permissions'
+
+    id = db.Column(db.Integer, primary_key=True)
+    code = db.Column(db.String(64), unique=True, nullable=False, comment='权限代码，用于系统识别')
+    name = db.Column(db.String(64), nullable=False, comment='权限名称，用于界面显示')
+    description = db.Column(db.String(255), comment='权限描述，说明权限用途')
+
+# 角色-权限 关联表（辅助对象模式，方便ORM关系管理）
+class RolePermission(db.Model):
+    __tablename__ = 'role_permissions'
+
+    role_id = db.Column(db.Integer, db.ForeignKey('roles.id', ondelete='CASCADE'), primary_key=True, comment='角色ID，关联roles表')
+    permission_id = db.Column(db.Integer, db.ForeignKey('permissions.id', ondelete='CASCADE'), primary_key=True, comment='权限ID，关联permissions表')
+    created_at = db.Column(db.DateTime, default=datetime.now, comment='权限分配时间')
+

app/models/user.py

@@ -1,9 +1,10 @@
-from flask_sqlalchemy import SQLAlchemy
+from app.models.database import db
 from werkzeug.security import generate_password_hash, check_password_hash
 from datetime import datetime
 from flask_login import UserMixin
+from app.models.permission import RolePermission, Permission
 
-db = SQLAlchemy()
+#db = SQLAlchemy()
 
 
 class User(db.Model, UserMixin):
@@ -77,4 +78,11 @@ class Role(db.Model):
     role_name = db.Column(db.String(32), unique=True, nullable=False)
     description = db.Column(db.String(128))
 
+    permissions = db.relationship(
+        'Permission',
+        secondary='role_permissions',
+        backref=db.backref('roles', lazy='dynamic'),
+        lazy='dynamic'
+    )
+
     users = db.relationship('User', backref='role')

app/services/user_service.py

@@ -125,37 +125,58 @@ class UserService:
         return Role.query.all()
 
     @staticmethod
-    def create_role(role_name, description=None):
-        """创建新角色"""
-        existing = Role.query.filter_by(role_name=role_name).first()
-        if existing:
-            return False, "角色名已存在"
+    def create_role(role_name, description, permission_ids=None):
+        """创建新角色，包括权限分配"""
+        from app.models.user import Role
+        from app.models.permission import Permission
+
+        # 检查角色名是否已存在
+        if Role.query.filter_by(role_name=role_name).first():
+            return False, "角色名称已存在", None
+
+        role = Role(role_name=role_name, description=description)
+
+        # 添加权限
+        if permission_ids:
+            permissions = Permission.query.filter(Permission.id.in_(permission_ids)).all()
+            role.permissions = permissions
 
         try:
-            role = Role(role_name=role_name, description=description)
             db.session.add(role)
             db.session.commit()
-            return True, "角色创建成功"
+            return True, "角色创建成功", role.id
         except Exception as e:
             db.session.rollback()
-            return False, f"创建失败: {str(e)}"
+            return False, f"创建失败: {str(e)}", None
 
     @staticmethod
-    def update_role(role_id, role_name, description=None):
-        """更新角色信息"""
+    def update_role(role_id, role_name, description, permission_ids=None):
+        """更新角色信息，包括权限"""
+        from app.models.user import Role
+        from app.models.permission import Permission
+
         role = Role.query.get(role_id)
         if not role:
             return False, "角色不存在"
 
-        # 检查角色名是否已被使用
-        existing = Role.query.filter(Role.role_name == role_name, Role.id != role_id).first()
-        if existing:
-            return False, "角色名已存在"
+        # 系统内置角色不允许修改名称
+        if role_id in [1, 2] and role.role_name != role_name:
+            return False, "系统内置角色不允许修改名称"
+
+        # 检查角色名是否已存在
+        existing_role = Role.query.filter(Role.role_name == role_name, Role.id != role_id).first()
+        if existing_role:
+            return False, "角色名称已存在"
+
+        role.role_name = role_name
+        role.description = description
+
+        # 更新权限（如果提供了权限列表且不是内置角色）
+        if permission_ids is not None and role_id not in [1, 2]:
+            permissions = Permission.query.filter(Permission.id.in_(permission_ids)).all()
+            role.permissions = permissions
 
         try:
-            role.role_name = role_name
-            if description is not None:
-                role.description = description
             db.session.commit()
             return True, "角色更新成功"
         except Exception as e:
@@ -181,4 +202,5 @@ class UserService:
         except Exception as e:
             db.session.rollback()
             logging.error(f"创建用户失败: {str(e)}")
-            return False, f'创建用户失败: {str(e)}'
+            return False, f'创建用户失败: {str(e)}'
+

app/static/css/user-roles.css

@@ -251,3 +251,94 @@
         margin-top: 15px;
     }
 }
+
+/* 权限选择部分样式 */
+.permissions-container {
+    max-height: 350px;
+    overflow-y: auto;
+    border: 1px solid #e9ecef;
+    border-radius: 4px;
+    padding: 15px;
+    background-color: #f8f9fa;
+}
+
+.permission-group {
+    margin-bottom: 20px;
+}
+
+.permission-group:last-child {
+    margin-bottom: 0;
+}
+
+.permission-group-title {
+    font-weight: 600;
+    color: #495057;
+    margin-bottom: 10px;
+    padding-bottom: 5px;
+    border-bottom: 1px solid #dee2e6;
+}
+
+.permission-items {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
+    gap: 10px;
+}
+
+.permission-item {
+    display: flex;
+    align-items: center;
+}
+
+.permission-checkbox {
+    margin-right: 8px;
+}
+
+.permission-name {
+    font-weight: 500;
+    margin-bottom: 5px;
+    display: block;
+}
+
+.permission-description {
+    font-size: 0.85rem;
+    color: #6c757d;
+    display: block;
+}
+
+.loading-permissions {
+    grid-column: 1 / -1;
+    text-align: center;
+    padding: 20px;
+    color: #6c757d;
+}
+
+/* 将模态框调整为大一点 */
+.modal-lg {
+    max-width: 800px;
+}
+
+/* 权限项样式 */
+.permission-item {
+    position: relative;
+    padding: 8px 12px;
+    border-radius: 4px;
+    transition: background-color 0.2s;
+}
+
+.permission-item:hover {
+    background-color: #e9ecef;
+}
+
+.permission-item label {
+    display: flex;
+    flex-direction: column;
+    cursor: pointer;
+    margin-bottom: 0;
+    padding-left: 25px;
+}
+
+.permission-item input[type="checkbox"] {
+    position: absolute;
+    left: 12px;
+    top: 12px;
+}

app/static/js/user-roles.js

@@ -16,6 +16,9 @@ document.addEventListener('DOMContentLoaded', function() {
     // 加载角色用户统计
     fetchRoleUserCounts();
 
+    // 初始化时加载权限列表
+    loadPermissions();
+
     // 添加角色按钮点击事件
     if (addRoleBtn) {
         addRoleBtn.addEventListener('click', function() {
@@ -27,6 +30,18 @@ document.addEventListener('DOMContentLoaded', function() {
             // 更新模态框标题
             document.getElementById('roleModalLabel').textContent = '添加角色';
 
+            // 启用所有权限复选框
+            document.querySelectorAll('.permission-checkbox').forEach(checkbox => {
+                checkbox.checked = false;
+                checkbox.disabled = false;
+            });
+
+            // 隐藏系统角色警告
+            const systemRoleAlert = document.getElementById('systemRoleAlert');
+            if (systemRoleAlert) {
+                systemRoleAlert.style.display = 'none';
+            }
+
             // 显示模态框
             roleModal.modal('show');
         });
@@ -54,6 +69,9 @@ document.addEventListener('DOMContentLoaded', function() {
             // 更新模态框标题
             document.getElementById('roleModalLabel').textContent = '编辑角色';
 
+            // 加载角色权限
+            loadRolePermissions(roleId);
+
             // 显示模态框
             roleModal.modal('show');
         });
@@ -79,10 +97,17 @@ document.addEventListener('DOMContentLoaded', function() {
                 return;
             }
 
+            // 收集选中的权限ID
+            const permissionIds = [];
+            document.querySelectorAll('.permission-checkbox:checked:not(:disabled)').forEach(checkbox => {
+                permissionIds.push(parseInt(checkbox.value));
+            });
+
             const roleData = {
                 id: roleIdInput.value || null,
                 role_name: roleNameInput.value.trim(),
-                description: roleDescriptionInput.value.trim() || null
+                description: roleDescriptionInput.value.trim() || null,
+                permissions: permissionIds
             };
 
             saveRole(roleData);
@@ -99,6 +124,182 @@ document.addEventListener('DOMContentLoaded', function() {
         });
     }
 
+    // 加载权限列表
+    function loadPermissions() {
+        // 获取权限容器
+        const bookPermissions = document.getElementById('book-permissions');
+        const userPermissions = document.getElementById('user-permissions');
+        const borrowPermissions = document.getElementById('borrow-permissions');
+        const systemPermissions = document.getElementById('system-permissions');
+
+        if (!bookPermissions) return; // 如果元素不存在就退出
+
+        // 设置加载中状态
+        bookPermissions.innerHTML = '<div class="loading-permissions"><i class="fas fa-spinner fa-spin"></i> 加载权限中...</div>';
+        userPermissions.innerHTML = '';
+        borrowPermissions.innerHTML = '';
+        systemPermissions.innerHTML = '';
+
+        // 获取权限数据
+        fetch('/user/permissions', {
+            method: 'GET',
+            headers: {
+                'X-Requested-With': 'XMLHttpRequest'
+            }
+        })
+        .then(response => {
+            if (!response.ok) {
+                throw new Error('网络响应异常');
+            }
+            return response.json();
+        })
+        .then(data => {
+            if (data.success) {
+                // 清除加载中状态
+                bookPermissions.innerHTML = '';
+
+                // 按分组整理权限
+                const permissionGroups = {
+                    book: [],   // 图书相关权限
+                    user: [],   // 用户相关权限
+                    borrow: [], // 借阅相关权限
+                    system: []  // 系统相关权限
+                };
+
+                // 定义权限分组映射
+                const permGroupMap = {
+                    'manage_books': 'book',
+                    'manage_categories': 'book',
+                    'import_export_books': 'book',
+
+                    'manage_users': 'user',
+                    'manage_roles': 'user',
+
+                    'manage_borrows': 'borrow',
+                    'manage_overdue': 'borrow',
+
+                    // 系统相关权限
+                    'manage_announcements': 'system',
+                    'manage_inventory': 'system',
+                    'view_logs': 'system',
+                    'view_statistics': 'system'
+                };
+
+                // 根据映射表分组
+                data.permissions.forEach(perm => {
+                    const group = permGroupMap[perm.code] || 'system';
+                    permissionGroups[group].push(perm);
+                });
+
+                // 渲染各组权限
+                renderPermissionGroup(bookPermissions, permissionGroups.book);
+                renderPermissionGroup(userPermissions, permissionGroups.user);
+                renderPermissionGroup(borrowPermissions, permissionGroups.borrow);
+                renderPermissionGroup(systemPermissions, permissionGroups.system);
+            } else {
+                bookPermissions.innerHTML = '<div class="text-danger">加载权限失败</div>';
+            }
+        })
+        .catch(error => {
+            console.error('Error:', error);
+            bookPermissions.innerHTML = '<div class="text-danger">加载权限失败，请刷新页面重试</div>';
+        });
+    }
+
+    // 渲染权限组
+    function renderPermissionGroup(container, permissions) {
+        if (permissions.length === 0) {
+            container.innerHTML = '<div class="text-muted">暂无相关权限</div>';
+            return;
+        }
+
+        let html = '';
+        permissions.forEach(perm => {
+            html += `
+                <div class="permission-item">
+                    <input type="checkbox" id="perm_${perm.id}" class="permission-checkbox" value="${perm.id}">
+                    <label for="perm_${perm.id}">
+                        <span class="permission-name">${perm.name}</span>
+                        <span class="permission-description">${perm.description || '无描述'}</span>
+                    </label>
+                </div>
+            `;
+        });
+
+        container.innerHTML = html;
+    }
+
+    // 加载角色的权限
+    function loadRolePermissions(roleId) {
+        if (!roleId) return;
+
+        // 先清空所有已选权限
+        document.querySelectorAll('.permission-checkbox').forEach(checkbox => {
+            checkbox.checked = false;
+        });
+
+        // 如果是系统内置角色，显示警告并禁用权限选择
+        const isSystemRole = (roleId == 1 || roleId == 2);
+        const systemRoleAlert = document.getElementById('systemRoleAlert');
+        const permissionCheckboxes = document.querySelectorAll('.permission-checkbox');
+
+        if (systemRoleAlert) {
+            systemRoleAlert.style.display = isSystemRole ? 'block' : 'none';
+        }
+
+        // 管理员角色自动选中所有权限并禁用
+        if (roleId == 1) { // 管理员
+            permissionCheckboxes.forEach(checkbox => {
+                checkbox.checked = true;
+                checkbox.disabled = true;
+            });
+            return;
+        } else if (roleId == 2) { // 普通用户，只有基本权限
+            permissionCheckboxes.forEach(checkbox => {
+                checkbox.checked = false;
+                checkbox.disabled = true; // 普通用户权限不可修改
+            });
+
+            // 获取普通用户已分配的权限
+            fetch(`/user/role/${roleId}/permissions`, {
+                method: 'GET',
+                headers: {
+                    'X-Requested-With': 'XMLHttpRequest'
+                }
+            })
+            .then(response => response.json())
+            .then(data => {
+                if (data.success) {
+                    permissionCheckboxes.forEach(checkbox => {
+                        // 如果权限ID在返回的列表中，则选中
+                        checkbox.checked = data.permissions.includes(parseInt(checkbox.value));
+                    });
+                }
+            });
+            return;
+        }
+
+        // 为自定义角色加载并选中权限
+        fetch(`/user/role/${roleId}/permissions`, {
+            method: 'GET',
+            headers: {
+                'X-Requested-With': 'XMLHttpRequest'
+            }
+        })
+        .then(response => response.json())
+        .then(data => {
+            if (data.success) {
+                permissionCheckboxes.forEach(checkbox => {
+                    // 启用所有复选框
+                    checkbox.disabled = false;
+
+                    // 如果权限ID在返回的列表中，则选中
+                    checkbox.checked = data.permissions.includes(parseInt(checkbox.value));
+                });
+            }
+        });
+    }
+
     // 保存角色
     function saveRole(roleData) {
         // 显示加载状态

app/templates/user/roles.html

@@ -135,7 +135,7 @@
 
 <!-- 角色编辑模态框 -->
 <div class="modal fade" id="roleModal" tabindex="-1" role="dialog" aria-labelledby="roleModalLabel" aria-hidden="true">
-    <div class="modal-dialog" role="document">
+    <div class="modal-dialog modal-lg" role="document">
         <div class="modal-content">
             <div class="modal-header">
                 <h5 class="modal-title" id="roleModalLabel">添加角色</h5>
@@ -156,6 +156,51 @@
                         <label for="roleDescription">角色描述</label>
                         <textarea class="form-control" id="roleDescription" rows="3"></textarea>
                     </div>
+
+                    <!-- 权限选择部分 -->
+                    <div class="form-group" id="permissionsSection">
+                        <label>角色权限</label>
+                        <div class="alert alert-info" id="systemRoleAlert" style="display: none;">
+                            <i class="fas fa-info-circle"></i> 系统内置角色的权限配置受到限制。
+                        </div>
+
+                        <div class="permissions-container">
+                            <!-- 权限分组：图书管理 -->
+                            <div class="permission-group">
+                                <h6 class="permission-group-title">图书管理</h6>
+                                <div class="permission-items" id="book-permissions">
+                                    <!-- 权限项将通过JS动态加载 -->
+                                    <div class="loading-permissions">
+                                        <i class="fas fa-spinner fa-spin"></i> 加载权限中...
+                                    </div>
+                                </div>
+                            </div>
+
+                            <!-- 权限分组：用户管理 -->
+                            <div class="permission-group">
+                                <h6 class="permission-group-title">用户管理</h6>
+                                <div class="permission-items" id="user-permissions">
+                                    <!-- 权限项将通过JS动态加载 -->
+                                </div>
+                            </div>
+
+                            <!-- 权限分组：借阅管理 -->
+                            <div class="permission-group">
+                                <h6 class="permission-group-title">借阅管理</h6>
+                                <div class="permission-items" id="borrow-permissions">
+                                    <!-- 权限项将通过JS动态加载 -->
+                                </div>
+                            </div>
+
+                            <!-- 权限分组：系统管理 -->
+                            <div class="permission-group">
+                                <h6 class="permission-group-title">系统管理</h6>
+                                <div class="permission-items" id="system-permissions">
+                                    <!-- 权限项将通过JS动态加载 -->
+                                </div>
+                            </div>
+                        </div>
+                    </div>
                 </form>
             </div>
             <div class="modal-footer">

app/utils/auth.py

@@ -30,3 +30,52 @@ def admin_required(f):
         return f(*args, **kwargs)
 
     return decorated_function
+
+
+def permission_required(permission_code):
+    """
+    检查用户是否拥有特定权限的装饰器
+    :param permission_code: 权限代码，例如 'manage_books'
+    """
+
+    def decorator(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            print(
+                f"DEBUG: permission_required({permission_code}) 检查 - current_user.is_authenticated = {current_user.is_authenticated}")
+
+            # 检查用户是否登录
+            if not current_user.is_authenticated:
+                flash('请先登录', 'warning')
+                return redirect(url_for('user.login', next=request.url))
+
+            # 管理员拥有所有权限
+            if getattr(current_user, 'role_id', None) == 1:
+                return f(*args, **kwargs)
+
+            # 获取用户角色并检查是否有指定权限
+            from app.models.user import Role
+            role = Role.query.get(current_user.role_id)
+
+            if not role:
+                flash('用户角色异常', 'danger')
+                return redirect(url_for('index'))
+
+            # 检查角色是否有指定权限
+            has_permission = False
+            for perm in role.permissions:
+                if perm.code == permission_code:
+                    has_permission = True
+                    break
+
+            if not has_permission:
+                print(f"DEBUG: 用户 {current_user.username} 缺少权限 {permission_code}")
+                flash('您没有执行此操作的权限', 'danger')
+                return redirect(url_for('index'))
+
+            return f(*args, **kwargs)
+
+        return decorated_function
+
+    return decorator
+

sql/module1_user.sql

@@ -20,6 +20,45 @@ CREATE TABLE `users` (
   FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`)
 );
 
+-- ----------------------------
+-- Table structure for permissions
+-- ----------------------------
+-- 这是权限表，用于存储系统中所有可分配的权限
+-- id: 权限的唯一标识符，自增主键
+-- code: 权限的唯一代码，用于程序中进行权限验证，如'manage_books'、'view_users'等
+-- name: 权限的显示名称，便于管理员理解，如'管理图书'、'查看用户'等
+-- description: 权限的详细描述，解释该权限允许用户执行什么操作
+DROP TABLE IF EXISTS `permissions`;
+CREATE TABLE `permissions` (
+  `id` int NOT NULL AUTO_INCREMENT,
+  `code` varchar(64) COLLATE utf8mb4_general_ci NOT NULL COMMENT '权限代码，用于系统识别',
+  `name` varchar(64) COLLATE utf8mb4_general_ci NOT NULL COMMENT '权限名称，用于界面显示',
+  `description` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '权限描述，说明权限用途',
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `code` (`code`) COMMENT '权限代码必须唯一'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='系统权限表';
+
+-- ----------------------------
+-- Table structure for role_permissions
+-- ----------------------------
+-- 这是角色-权限关联表，用于建立角色和权限之间的多对多关系
+-- role_id: 角色ID，外键关联到roles表
+-- permission_id: 权限ID，外键关联到permissions表
+-- created_at: 记录权限分配给角色的时间
+-- 该表使用role_id和permission_id的组合作为复合主键，确保一个角色不会重复分配同一权限
+DROP TABLE IF EXISTS `role_permissions`;
+CREATE TABLE `role_permissions` (
+  `role_id` int NOT NULL COMMENT '角色ID，关联roles表的id字段',
+  `permission_id` int NOT NULL COMMENT '权限ID，关联permissions表的id字段',
+  `created_at` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '权限分配时间',
+  PRIMARY KEY (`role_id`,`permission_id`),  -- 复合主键，确保一个角色不会重复分配同一权限
+  KEY `permission_id` (`permission_id`),     -- 权限ID索引，提高查询效率
+  CONSTRAINT `role_permissions_ibfk_1` FOREIGN KEY (`role_id`) REFERENCES `roles` (`id`) ON DELETE CASCADE,
+  CONSTRAINT `role_permissions_ibfk_2` FOREIGN KEY (`permission_id`) REFERENCES `permissions` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='角色-权限关联表';
+
+
+
 -- （可选）初始化角色数据
 INSERT INTO `roles` (`role_name`, `description`) VALUES
 ('admin', '管理员'),