廢話不多說，直接上代碼，相信都能看的懂
一共兩布，第一步，創建Interceptor攔截
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package com.cy.example.config;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;public class LoginInterceptor implements HandlerInterceptor { private Logger logger = LoggerFactory.getLogger(LoginInterceptor.class); public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub } public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub } public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { // TODO Auto-generated method stub //獲取session HttpSession session = request.getSession(true); logger.info("----進入登錄攔截器--url："+request.getServletPath()+"-----"); if(session.getAttribute(WebConfig.LOGIN_USER) == null){ logger.info("------跳轉到login頁面-----"); response.sendRedirect(request.getContextPath()+"/index"); return false; }else{ session.setAttribute(WebConfig.LOGIN_USER, session.getAttribute(WebConfig.LOGIN_USER)); return true; } }} |
第二步，注冊創建的攔截器
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package com.cy.example.config;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;@Configurationpublic class WebConfig extends WebMvcConfigurerAdapter { public static String LOGIN_USER = "loginUser"; public WebConfig() { super(); } //因為新加了攔截器，這里需要重新設置資源地址 @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/static/**").addResourceLocations( "classpath:/static/"); registry.addResourceHandler("/templates/**").addResourceLocations( "classpath:/templates/"); super.addResourceHandlers(registry); } @Override public void configureDefaultServletHandling( DefaultServletHandlerConfigurer configurer) { configurer.enable(); } @Override public void addInterceptors(InterceptorRegistry registry) { // 攔截規則：除了login，其他都攔截判斷,excludePathPatterns是排除攔截的路徑，一個是登錄驗證地址，一個是登錄頁 registry.addInterceptor(newLoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/index","/system/user/validate"); super.addInterceptors(registry); }} |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/qq_20989105/article/details/78141009
