spring mvc json乱码问题

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import com.fasterxml.jackson.databind.ObjectMapper; //Jsckson JSON Processer

import java.util.*;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.*;

import java.io.PrintWriter;

import java.nio.charset.Charset;

@Controller

public class HomeController {

@RequestMapping(value="/Home/writeJson", method=RequestMethod.GET)

public void writeJson(HttpServletResponse response)

{

ObjectMapper mapper = new ObjectMapper();

HashMap<String,String> map = new HashMap<String,String>();

map.put("1","张三");

map.put("2","李四");

map.put("3","王五");

map.put("4", "Jackson");

String json = "";

try

{

json = mapper.writeValueAsString(map);

System.out.println(json);

//方案二

ServletOutputStream os = response.getOutputStream(); //获取输出流

os.write(json.getBytes(Charset.forName("GBK"))); //将json数据写入流中

os.flush();

//方案一

response.setCharacterEncoding("UTF-8"); //设置编码格式

response.setContentType("text/html"); //设置数据格式

PrintWriter out = response.getWriter(); //获取写入对象

out.print(json); //将json数据写入流中

out.flush();

}

catch(Exception e)

{

e.printStackTrace();

}

//return "home";

}

}

注解配置！！！！！！！！！！！！！！！！！！！！

@RequestMapping(value="/Home/writeJson", method=RequestMethod.GET, produces = "text/html;charset=UTF-8")

@ResponseBody

public Object writeJson(HttpServletResponse response)

{

ObjectMapper mapper = new ObjectMapper();

HashMap<String,String> map = new HashMap<String,String>();

map.put("1","张三");

map.put("2","李四");

map.put("3","王五");

map.put("4", "Jackson");

String json = "";

try

{

json = mapper.writeValueAsString(map);

System.out.println(json);

}

catch(Exception e)

{

e.printStackTrace();

}

return json;

}