@ResponseBody修饰String和对象，前台接收的格式

1：String +ResponseBody = 返回值为String

@RequestMapping("/testResponseBody") @ResponseBody public String testResponseBody(){ return "success"; }

alert---success

2：对象+ResponseBody = json对象

@RequestMapping("/testResponseBody2") @ResponseBody public Student testResponseBody2(){ Student s = new Student(); s.setAge(11); s.setName("11"); return s; }

alert ---{"age":11,"name":"11"}

3：String +ResponseBody = String

@RequestMapping("/testResponseBody3") @ResponseBody public String testResponseBody3(){ return JSON.toJSONString(SysResult.resultOK()); }

alert {"resultcode":0,"resultdesc":""}

字符串可以转换为json对象

4：void+Response

@RequestMapping("/testResponseBody5") public void testResponseBody5(HttpServletResponse response){ response.setContentType("text/html"); PrintWriter out= null; try { out = response.getWriter(); out.println(JSON.toJSONString(SysResult.resultOK())); out.flush(); out.close(); } catch (IOException e) { e.printStackTrace(); } } {"resultcode":0,"resultdesc":""}