废话不多说，直接上代码，相信都能看的懂
一共两布，第一步，创建Interceptor拦截
|
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
44
45
46
|
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 //获取session HttpSession session = request.getSession(true); logger.info("----进入登录拦截器--url："+request.getServletPath()+"-----"); if(session.getAttribute(WebConfig.LOGIN_USER) == null){ logger.info("------跳转到login页面-----"); response.sendRedirect(request.getContextPath()+"/index"); return false; }else{ session.setAttribute(WebConfig.LOGIN_USER, session.getAttribute(WebConfig.LOGIN_USER)); return true; } }} |
第二步，注册创建的拦截器
|
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
|
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(); } //因为新加了拦截器，这里需要重新设置资源地址 @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) { // 拦截规则：除了login，其他都拦截判断,excludePathPatterns是排除拦截的路径，一个是登录验证地址，一个是登录页 registry.addInterceptor(newLoginInterceptor()).addPathPatterns("/**").excludePathPatterns("/index","/system/user/validate"); super.addInterceptors(registry); }} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/qq_20989105/article/details/78141009
