快速解决SpringMVC @RequestBody 用map接收请求参数的问题

@RequestMapping(value = "/callback", produces = "text/html;charset=UTF-8") 
@ResponseBody 
public String callback(@RequestBody Map<String, String> params) { 
 return null; 
} 

@RequestMapping(value = "/callback", produces = "text/html;charset=UTF-8") 
@ResponseBody 
public String callback(HttpServletRequest httpServletRequest) { 
 Map<String, String> params = httpServletRequest.getParameterMap(); 
 return null; 
} 

@RequestMapping(value = "/callback", produces = "text/html;charset=UTF-8") 
@ResponseBody 
public String callback(@RequestParam Map<String, String> params) { 
 return null; 
} 

<script type="text/javascript"> 
 $(document).ready(function(){ 
 var saveDataAry=[]; 
 var data1={"userName":"test","address":"gz"}; 
 var data2={"userName":"ququ","address":"gr"}; 
 saveDataAry.push(data1); 
 saveDataAry.push(data2);  
 $.ajax({ 
  type:"POST", 
  url:"user/saveUser", 
  dataType:"json", 
  contentType:"application/json",  
  data:JSON.stringify(saveData), 
  success:function(data){ 
     
  } 
  }); 
 }); 
</script>

@RequestMapping(value = "saveUser", method = {RequestMethod.POST }}) 
@ResponseBody 
public void saveUser(@RequestBody List<User> users) { 
 userService.batchSave(users); 
 }