SpringMVC 第三讲笔记：拦截器、修改端口号

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() {
			
			
			@Override
			public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object object) throws Exception {
				System.out.println("*************preHandle");
				String name = request.getParameter("name");
				if("admin".equals(name)){
					return true;					
				}else{					
					return false;					
				}
			}
			
			
			@Override
			public void postHandle(HttpServletRequest request, HttpServletResponse response, Object object, ModelAndView mav)
					throws Exception {
				System.out.println("*************postHandle");
			}
			
			
			@Override
			public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object object, Exception exception)
					throws Exception {
				System.out.println("*************afterCompletion");
				
			}
		};
		
		registry.addInterceptor(handlerInterceptor); //添加拦截器
	}	
}

package demo.boot.controller;

import java.util.Arrays;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import demo.boot.entity.User;

@Controller
@RequestMapping("test") //访问test下的方法，地址栏：http://127.0.0.1:8080/test/t1
public class TestController {
	
	@RequestMapping(value = "hello", method = RequestMethod.GET)
	@ResponseBody
	public String hello(){
		System.out.println("进到Controller里了");
		return "hello world";
	}
}

package demo.boot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class MainApplication {

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

}

将 8080 改为 8090 ：

server.port=8090