【先小波的回答：设置了拦截器时候，我的账号传不进数据库】

设置了拦截器时候，我的账号传不进数据库

我也踩过这个坑( 1 )

已统计您的踩坑,无需重复点击

回答(1)

详细描述

错误截图

源码

package com.Interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ResetInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}

编辑于2025-05-06

[成都|荣耀师兄]JAVA-先小波

prehandle要return true，不然是不会进行后面的操作的。下面是我的拦截器的例子：

@Component
public class LoginInterceptor implements HandlerInterceptor {
    private static Logger log = Logger.getLogger(LoginInterceptor.class);
    @Autowired
    private CookieUtil cookieUtil;
    @Autowired
    private JwtUtil jwtUtil;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler) throws Exception{
        String JwtToken = cookieUtil.getCookie(request);
        if(JwtToken == null) {
            response.sendRedirect("/a/login");
            return  false;
        }
        Integer userId = jwtUtil.getUserId(JwtToken);
        if(userId == null){
            response.sendRedirect("/a/login");
            return  false;
        }
        return  true;
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception{
//        System.out.println("postHandle");
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//        System.out.println("afterCompletion");
    }

}

编辑于2018-12-03