spring-boot 加入拦截器Interceptor

1.spring boot拦截器默认有

• HandlerInterceptorAdapter
• AbstractHandlerMapping
• UserRoleAuthorizationInterceptor
• LocaleChangeInterceptor
• ThemeChangeInterceptor

2.配置spring mvc的拦截器WebMvcConfigurerAdapter

1. public class WebAppConfig extends WebMvcConfigurerAdapter

3.实现添加拦截器方法

1. public void addInterceptors(InterceptorRegistry registry){
2. }
3. registry.addInterceptor可以通过此方法添加拦截器, 可以是spring提供的或者自己添加的

4.实例部分

1. public class WebAppConfig extends WebMvcConfigurerAdapter{
2. public static void main(String[] args) {
3. SpringApplication.run(WebAppConfig.class, args);
4. }
5. /**
6. * 配置拦截器
7. * @author lance
8. * @param registry
9. */
10. public void addInterceptors(InterceptorRegistry registry) {
11. registry.addInterceptor(new UserSecurityInterceptor()).addPathPatterns("/user/**");
12. }
13. }
14. UserSecurityInterceptor代码
15. public class UserSecurityInterceptor implements HandlerInterceptor {
16. @Override
17. public boolean preHandle(HttpServletRequest request,
18. HttpServletResponse response, Object handler) throws Exception {
19. return true;
20. }
21. @Override
22. public void postHandle(HttpServletRequest request,
23. HttpServletResponse response, Object handler,
24. ModelAndView modelAndView) throws Exception {
25. }
26. @Override
27. public void afterCompletion(HttpServletRequest request,
28. HttpServletResponse response, Object handler, Exception ex)
29. throws Exception {
30. }
31. }

5.demo地址 
https://github.com/leelance/spring-boot-all/tree/master/spring-boot-samples

 

想问下，我配置的这个拦截器为啥没有生效呢？

转自：http://lihao312.iteye.com/blog/2078139

 

1. import org.springframework.context.annotation.Bean;
2. import org.springframework.context.annotation.Configuration;
3. import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
4. import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
5. import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
6. import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
7. import javax.servlet.http.HttpServletRequest;
8. import javax.servlet.http.HttpServletResponse;
9. import javax.servlet.http.HttpSession;
10. @Configuration
11. public class WebSecurityConfig extends WebMvcConfigurerAdapter {
12. /**
13. * 登录session key
14. */
15. public final static String SESSION_KEY = "user";
16. @Bean
17. public SecurityInterceptor getSecurityInterceptor() {
18. return new SecurityInterceptor();
19. }
20. @Override
21. public void addInterceptors(InterceptorRegistry registry) {
22. InterceptorRegistration addInterceptor = registry.addInterceptor(getSecurityInterceptor());
23. // 排除配置
24. //        addInterceptor.excludePathPatterns("/error");
25. //        addInterceptor.excludePathPatterns("/login**");
26. // 拦截配置
27. addInterceptor.addPathPatterns("/**");
28. }
29. private class SecurityInterceptor extends HandlerInterceptorAdapter {
30. @Override
31. public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
32. throws Exception {
33. HttpSession session = request.getSession();
34. if (session.getAttribute(SESSION_KEY) != null)
35. return true;
36. // 跳转登录
37. String url = "/login";
38. response.sendRedirect(url);
39. return false;
40. }
41. }
42. }