1

zj

2024-07-29 f6f3df18ea57ea4128fcccf3282e1520e867c631

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
package org.example.util;
 
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
 
/**
 * @program: demo
 * @description:
 * @create: 2024-07-29 11:15
 **/
public class LoginInterceptor implements HandlerInterceptor {
 
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
 
        HttpSession session = request.getSession();
 
        // 假设登录状态信息保存在 session 中，这里简单示例，实际项目中可能会有自己的登录状态判断逻辑
        if (session.getAttribute("loggedInUser") != null) {
            // 已登录，允许请求继续
            return true;
        } else {
            // 未登录，返回未授权错误码或重定向到登录页
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);  // 返回 401 未授权状态码
            return false;
        }
    }
 
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
    }
 
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
                                Exception ex) throws Exception {
    }
}