import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.List;
import java.util.Map;

/**
 * 阿里云物流API测试
 * 测试快递单号：434815453222560（韵达快递）
 */
public class ExpressQueryTest {
    public static void main(String[] args) {
        String host = "https://wuliu.market.alicloudapi.com";
        String path = "/kdi";
        String appcode = "e7b5746ef8854cf2a6da24342ab53af6";
        String no = "434815453222560"; // 韵达快递单号
        String type = "yunda"; // 韵达快递代码
        
        String urlSend = host + path + "?no=" + no + "&type=" + type;
        
        System.out.println("========================================");
        System.out.println("阿里云物流API测试");
        System.out.println("========================================");
        System.out.println("请求地址: " + urlSend);
        System.out.println("快递公司: 韵达快递");
        System.out.println("快递单号: " + no);
        System.out.println("----------------------------------------");
        
        try {
            URL url = new URL(urlSend);
            HttpURLConnection httpURLCon = (HttpURLConnection) url.openConnection();
            httpURLCon.setRequestProperty("Authorization", "APPCODE " + appcode);
            
            int httpCode = httpURLCon.getResponseCode();
            System.out.println("HTTP状态码: " + httpCode);
            System.out.println("----------------------------------------");
            
            if (httpCode == 200) {
                String json = read(httpURLCon.getInputStream());
                System.out.println("✅ API调用成功！");
                System.out.println("返回结果:");
                System.out.println(json);
                System.out.println("========================================");
            } else {
                Map<String, List<String>> map = httpURLCon.getHeaderFields();
                List<String> errorList = map.get("X-Ca-Error-Message");
                String error = errorList != null && !errorList.isEmpty() ? errorList.get(0) : "未知错误";
                
                System.out.println("❌ API调用失败！");
                System.out.println("错误信息: " + error);
                
                if (httpCode == 400 && error.equals("Invalid AppCode `not exists`")) {
                    System.out.println("原因: AppCode错误");
                } else if (httpCode == 400 && error.equals("Invalid Url")) {
                    System.out.println("原因: 请求的 Method、Path 或者环境错误");
                } else if (httpCode == 400 && error.equals("Invalid Param Location")) {
                    System.out.println("原因: 参数错误");
                } else if (httpCode == 403 && error.equals("Unauthorized")) {
                    System.out.println("原因: 服务未被授权（或URL和Path不正确）");
                } else if (httpCode == 403 && error.equals("Quota Exhausted")) {
                    System.out.println("原因: 套餐包次数用完");
                } else if (httpCode == 403 && error.equals("Api Market Subscription quota exhausted")) {
                    System.out.println("原因: 套餐包次数用完，请续购套餐");
                } else {
                    System.out.println("原因: 参数名错误或其他错误");
                }
                
                // 打印所有响应头帮助调试
                System.out.println("\n所有响应头:");
                for (Map.Entry<String, List<String>> entry : map.entrySet()) {
                    System.out.println(entry.getKey() + ": " + entry.getValue());
                }
                System.out.println("========================================");
            }

        } catch (MalformedURLException e) {
            System.out.println("❌ URL格式错误");
            e.printStackTrace();
        } catch (UnknownHostException e) {
            System.out.println("❌ URL地址错误");
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("❌ 发生异常");
            e.printStackTrace();
        }
    }

    /**
     * 读取返回结果
     */
    private static String read(InputStream is) throws IOException {
        StringBuilder sb = new StringBuilder();
        BufferedReader br = new BufferedReader(new InputStreamReader(is, "utf-8"));
        String line = null;
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }
        br.close();
        return sb.toString();
    }
}