SpringBoot第三讲——拦截器

@Configuration

package demo.boot.config;

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

@Configuration
public class SpringMVCConfig extends WebMvcConfigurerAdapter{

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		// TODO Auto-generated method stub
		super.addInterceptors(registry);
	}
}

package demo.boot.config;

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

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

@Configuration
public class SpringMVCConfig extends WebMvcConfigurerAdapter{

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		HandlerInterceptor handlerInterceptor
	}

点击导入，会出现很多方法重写

package demo.boot.config;

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

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

@Configuration
public class SpringMVCConfig extends WebMvcConfigurerAdapter{

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		HandlerInterceptor handlerInterceptor=
		new HandlerInterceptor() {
			
			
			public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
					throws Exception {
				System.out.println("--preHandle--");
				return true;
			}
			
			
			public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
					ModelAndView modelAndView) throws Exception {
				System.out.println("--postHandle--");
			}
			
			
			public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
					throws Exception {
				System.out.println("--afterCompletion--");
			}
		};
		registry.addInterceptor(handlerInterceptor);
	}
	

}

@RequestMapping("hello")
	@ResponseBody
	public String helloworld() {
		System.out.println("进到Controller里了");
		return "hello SpringBoot";
	}