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 

public class WebAppConfig extends WebMvcConfigurerAdapter

3.实现添加拦截器方法 

public void addInterceptors(InterceptorRegistry registry){

}
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 

public class WebAppConfig extends WebMvcConfigurerAdapter{
    public static void main(String[] args) {
        SpringApplication.run(WebAppConfig.class, args);
    }

    /**
     * 配置拦截器
     * @author lance
     * @param registry
     */
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new UserSecurityInterceptor()).addPathPatterns("/user/**");
    }
}

UserSecurityInterceptor代码
public class UserSecurityInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
            HttpServletResponse response, Object handler) throws Exception {

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request,
            HttpServletResponse response, Object handler,
            ModelAndView modelAndView) throws Exception {
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
            HttpServletResponse response, Object handler, Exception ex)
            throws Exception {

    }

}

 

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

 

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

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

@Configuration
public class WebSecurityConfig extends WebMvcConfigurerAdapter {

    /**
     * 登录session key
     */
    public final static String SESSION_KEY = "user";

    @Bean
    public SecurityInterceptor getSecurityInterceptor() {
        return new SecurityInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        InterceptorRegistration addInterceptor = registry.addInterceptor(getSecurityInterceptor());

        // 排除配置
//        addInterceptor.excludePathPatterns("/error");
//        addInterceptor.excludePathPatterns("/login**");

        // 拦截配置
        addInterceptor.addPathPatterns("/**");
    }

    private class SecurityInterceptor extends HandlerInterceptorAdapter {

        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
                throws Exception {
            HttpSession session = request.getSession();
            if (session.getAttribute(SESSION_KEY) != null)
                return true;

            // 跳转登录
            String url = "/login";
            response.sendRedirect(url);
            return false;
        }
    }
}