spring boot 配置拦截器

最新推荐文章于 2025-05-21 11:04:20 发布

原创最新推荐文章于 2025-05-21 11:04:20 发布 · 617 阅读

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本文详细介绍了如何在Spring MVC框架中使用自定义拦截器（Interceptor）。通过具体代码示例，展示了拦截器如何在请求处理前后执行，以及如何通过检查session中的name属性来决定是否放行请求，有效地实现了用户登录状态的检查。

话不多说上代码

package com.admin.demo.controller;

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

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

public class Interceptor1 implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler) throws Exception{
        HttpSession session=request.getSession();
        Object ob=session.getAttribute("name");
        if (ob!=null) {
            return true;
        }
        session.setAttribute("preurl",request.getRequestURI());
        StringBuffer url = request.getRequestURL();
        String tempContextUrl = url.delete(url.length() - request.getRequestURI().length(), url.length()).append(request.getServletContext().getContextPath()).append("/").toString();
        response.sendRedirect("/user/login");
        //response.sendRedirect(tempContextUrl);
        return false;
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response,
           Object handler,ModelAndView model) throws Exception{
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
             Object handler,Exception ex) throws Exception{
    }

}

	// 要调用WebMvcConfigurer接口
@Override
    public void addInterceptors(InterceptorRegistry registry){
        InterceptorRegistration ir=registry.addInterceptor(new Interceptor1());
        ir.addPathPatterns("/**");
       // ir.excludePathPatterns("/stu/save","/stu/getClassGid","/stu/pageList","/stu/getClassAll","/index/index","/index/right","/stu/news","/stu/pageList","/stu/indexData","/stu/getEditData","/stu/getClass","/stu/del","/stu/edit","/stu/login","/stu/index","/stu/add","/js/**","/html/**","/images/**","/css/**");
       	ir.excludePathPatterns("/user/login","/user/dologin","/user/yzm","/js/**","/html/**","/images/**","/css/**");
       	// 需要放行的路径

    }