springmvc过滤器

xml配置文件过滤器内容

<!--登录拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <mvc:exclude-mapping path="/**/fonts/**"/>
            <mvc:exclude-mapping path="/**/css/**"/>
            <mvc:exclude-mapping path="/**/images/**"/>
            <mvc:exclude-mapping path="/**/js/**"/>
            <mvc:exclude-mapping path="/**/css/**"/>
            <mvc:exclude-mapping path="/**/login.html"/>
            <mvc:exclude-mapping path="/**/lib/**"/>
            <mvc:exclude-mapping path="/background/login.do"/>
            <mvc:exclude-mapping path="/background//loginpwd.do"/>
            <bean class="com.qy.controller.LoginIncerteptor"/>
        </mvc:interceptor>
    </mvc:interceptors>

<mvc:mapping path> 表示要拦截的路径 path中写被 拦截的路径

<mvc:exclude-mapping path>表示不被拦截的路径 path中写不被拦截的路径

<bean  class>关联的类class中填写类的全限定名称

LoginIncerteptor.java文件

package com.qy.controller;

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

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

public class LoginIncerteptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        Object user = httpServletRequest.getSession().getAttribute("user");
        String  path =httpServletRequest.getContextPath();
        String  bassPath = httpServletRequest.getScheme()+"://"+httpServletRequest.getServerName()+":"+httpServletRequest.getServerPort()+path+"/";
        if (user == null){
            System.out.println("尚未登录,调到登录页面");
            httpServletResponse.sendRedirect(bassPath+"background/login.html");
            return false;
        }

        return true;
    }

    @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 {

    }
}

如果登录成功将用户名和密码保存在session中 然后再LoginIncerteptor类中的继承HandlerIntercepter 重写preHandel方法

在方法中获取session中的数据,如果数据为空跳到登录页面,否则继续访问

最后

以上就是斯文花卷为你收集整理的springmvc过滤器的全部内容，希望文章能够帮你解决springmvc过滤器所遇到的程序开发问题。

如果觉得靠谱客网站的内容还不错，欢迎将靠谱客网站推荐给程序员好友。