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  • 如何在SpringBoot项目中使用拦截器

    相比springmvc,springboot中拦截器不需要在xml中配置,只需定义拦截器类 implements HandlerInterceptor

    和拦截器拦截路径的配置类extends WebMvcConfigurerAdapter

    1.SessionInterceptor

    package com.example.demo;
    
    import org.springframework.web.servlet.HandlerInterceptor;
    import org.springframework.web.servlet.ModelAndView;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    /**
     * Created by 20160216 on 2018/2/8.
     */
    public class SessionInterceptor implements HandlerInterceptor
    {
        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
            System.out.println("uri="+request.getRequestURI());
            //登录不做拦截
            if(request.getRequestURI().equals("/userbg/login") || request.getRequestURI().equals("/user/login_view"))
            {
                return true;
            }
            //验证session是否存在
            Object obj = request.getSession().getAttribute("_session_user");
            if(obj == null)
            {
                response.sendRedirect("/user/login_view");
                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 {
    
        }
    }

    2.SessionConfiguration

    package com.example.demo;
    
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    /**
     * Created by 20160216 on 2018/2/8.
     */
    @Configuration
    public class SessionConfiguration extends WebMvcConfigurerAdapter
    {
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(new SessionInterceptor()).addPathPatterns("/**");
        }
    }
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  • 原文地址:https://www.cnblogs.com/tangou/p/8432325.html
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