SpringMVC中JSONP的基本使用

 1 @RequestMapping("/check/{param}/{type}")  2  @ResponseBody  3     public Object checkData(@PathVariable String param, @PathVariable Integer type, String callback) {  4 
 5         TaotaoResult result = null;  6 
 7         // 參數有效性校驗
 8         if (StringUtils.isBlank(param)) {  9             result = TaotaoResult.build(400, "校驗內容不能爲空"); 10  } 11         if (type == null) { 12             result = TaotaoResult.build(400, "校驗內容類型不能爲空"); 13  } 14         if (type != 1 && type != 2 && type != 3) { 15             result = TaotaoResult.build(400, "校驗內容類型錯誤"); 16  } 17         // 校驗出錯
18         if (null != result) { 19             if (null != callback) { 20                 JSONPObject jsonpObject = new JSONPObject(callback, result); 21                 return jsonpObject; 22             } else { 23                 return result; 24  } 25  } 26         // 調用服務
27         try { 28             result = userService.checkData(param, type); 29 
30         } catch (Exception e) { 31             result = TaotaoResult.build(500, ExceptionUtil.getStackTrace(e)); 32  } 33 
34         if (null != callback) { 35             JSONPObject jsonpObject = new JSONPObject(callback, result); 36             return jsonpObject; 37 // MappingJacksonValue mappingJacksonValue = new MappingJacksonValue(result); 38         // mappingJacksonValue.setJsonpFunction(callback); 39 // mappingJacksonValue.setValue(callback); 40 // return mappingJacksonValue;
41         } else { 42             return result; 43  } 44     }