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HomeDatabaseMysql TutorialExtJS3.2+SpringMVC4.0 Form提交后返回json始终是failure,而且

经过一段折腾,总算把问题解决了,下面将解决的过程记录下来,希望能给其他人提供些帮助: 返回JSON式的数据,需要在ApplicationContext.xml中配置,当然网上有两种方法,我用了第一种,即阿里巴巴的fastjson,之前下载的是低版本的,运行时发现有错,因为缺

经过一段折腾,总算把问题解决了,下面将解决的过程记录下来,希望能给其他人提供些帮助:

返回JSON格式的数据,需要在ApplicationContext.xml中配置,当然网上有两种方法,我用了第一种,即阿里巴巴的fastjson,之前下载的是低版本的,运行时发现有错,因为缺少对spring的支持,最终下载了1.1.40版本(当然版本越高肯定也支持),将下载的fastjson-1.1.40.jar包加入到buildpath中。下面就要配置applicationcontext.xml了,配置代码如下:


       
           
           
               
                   
                       
                        text/html;charset=UTF-8
                        application/json;charset=UTF-8
                   

               

           

       

   

在SpringMVC的控制层的代码如下:

@RequestMapping("/upload")  //这是定义了路由,和本文讲的没什么关系
 @ResponseBody //因为我不想返回视图,而是返回一个json数据,那么这边必须要用RespnseBody来注解

Object类型,并且通过Map的方式将success和message添加进去,这样到前台就会根据success的值来判断调用是否成功执行了


 public Object doUpload(@RequestParam(value = "F_FileType", required = false) String sType,HttpServletRequest request,HttpServletResponse response) throws IOException{

/*下面这一段是文件上传的代码*/
  MultipartHttpServletRequest fileRequest = (MultipartHttpServletRequest) request; 
  MultipartFile file = fileRequest.getFile("F_PicPath");  
  String path = request.getSession().getServletContext().getRealPath("upload")+"\\"+sType+"\\";
  String fileName = file.getOriginalFilename();
  //response.setContentType("application/json; charset=UTF-8");
  File targetFile = new File(path, fileName);
  if (!targetFile.exists()){
   targetFile.mkdirs();
  }
  try{
   file.transferTo(targetFile);
  }catch(Exception e){
   e.printStackTrace();
  }
  Map map = new HashMap();
  map.put("success", false);
  map.put("msg", "失败");
  return map;
 }





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