浏览器直接调用service层乱码处理

@Controller
@RequestMapping("/user1")
public class TestController {

@Resource
private JedisService jedisService;

@RequestMapping("/save")
@ResponseBody
public String save(HttpServletResponse response) throws Exception{
jedisService.set("djl", "大舅佬"); //设置redis 键值
response.setContentType("text/html;charset=utf-8");
return jedisService.get("djl");
}

}

关键代码：response.setContentType("text/html;charset=utf-8");