SpringMVC之springmvc原始api,请求中文乱码问题

package com.tz.controller;

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

import org.springframework.beans.factory.annotation.Required;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import com.tz.domain.Course;

@Controller
public class RequestController {
	/**
	 * @PathVariable("user"):获取路径中的值/handler/{user}
	 * @RequestParam("user"):获取请求参数/hander/{user}?user=coco
	 * 
	 * @param userName
	 * @return
	 */
	@RequestMapping("/handle")
	public String handler(@RequestParam(value="user",required=false) String userName){
		//userName = request.getParameter("user");
		System.out.println(userName);
		return "success";
	}
	
	@RequestMapping("/handle2")
	public String handler02(@RequestParam(value="user",required=false,defaultValue="你没有带参数") String userName,
							@RequestHeader(value="User-Agent",required=false) String user_Agent,
							@CookieValue("JSESSIONID") String js){
		//userName = request.getParameter("user");
		System.out.println(userName);
		System.out.println(user_Agent);
		System.out.println(js);
		return "success";
	}
	
	
	/**
	 * springmvc可以在参数上写servlet常用的api
	 * HttpServletRequest
	 * HttpServletResponse
	 * Httpsession
	 * 
	 * InputStream:request.getInputStream();
	 * OutputStream:response.getOutputStream();
	 * Reader:request.getReader();
	 * Writer:response.getWriter();
	 * 
	 * 请求:客户端-->服务端(客户端显示乱码)
	 * 修改tomcat配置文件
	 * GET有效
	 * <Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
	 * 第一次获取请求参数之前:request.setCharacterEncoding("UTF-8");
	 * 
	 * 响应:服务端-->客户端(服务端显示乱码)
	 * reponse.setContentType("text/html;charset=utf-8");
	 * @param c
	 * @return
	 */
	@RequestMapping("/addCourse")
	public String addCourse(Course c){//springMVC会自动为我们定义的类型进行赋值
		/**
		 * 1.将对象中的每一个属性从request参数中尝试取出来,并进行封装
		 * request.getParameter("参数名");如果有值,就会取出来封装到实体类的属性中(调用set方法)
		 */
		System.out.println(c);
		return "success";
	}
	
	@RequestMapping("/handle04")
	public String handle04(HttpSession session,HttpServletRequest request){
		session.setAttribute("session","session域");
		request.setAttribute("request","request域");
		return "success";
	}
	
	
}
package com