Detailed explanation of springboot (5) interceptor

 

 

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Detailed explanation of springboot (1) helloworld                                   download demo            

Springboot detailed explanation (2) crud  download demo                                                 

Detailed explanation of springboot (3) Download demo from multiple data sources                                              

Springboot detailed explanation (4) redis & filter download demo                                        

Springboot detailed explanation (5) interceptor  download demo                                           

Springboot detailed explanation (6) servlet & scheduled & listener     download demo          

Springboot detailed explanation (7) dubbox & zookeeper    download (productor)  download (constumser)

springboot synchronous decoupling asynchronous   download demo

Detailed explanation of springboot (8) springboot & springcloud 

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package com.curiousby.cn.interceptor;

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

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.curiousby.cn.constants.Constants;
import com.curiousby.cn.one.entity.User;


public class LoginAuthInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
                             Object handler)
            throws Exception {  
        User user = (User)request.getSession().getAttribute(Constants.USER);
        if (null == user) {
            response.sendRedirect("/SpringBootWebDemo/web/static/forward");
            return false;
        }
        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 {
        
    }

  

}

 

 

 

package com.curiousby.cn.configurer;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import com.curiousby.cn.interceptor.LoginAuthInterceptor;


@Configuration
public class WebAppConfigurer extends WebMvcConfigurerAdapter {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginAuthInterceptor()).addPathPatterns("/web/**").excludePathPatterns("/web/static/**");
        super.addInterceptors(registry);
    }
    
    
    
    //Priority: META-INFO/resources > resources > static > public
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/img/**").addResourceLocations("classpath:/img/");
        super.addResourceHandlers(registry);
    }
}

 

 

访问 http://localhost:8080/SpringBootWebDemo/web/users/7

 will automatically redirect to

http://localhost:8080/SpringBootWebDemo/web/static/forword

 

SpringBootWebDemo is added to the interceptor This is my project name

server.context-path=/SpringBootWebDemo

 

Maybe the default is better

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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