Question

我是Java的初学者并且去创建一个Web应用程序。我正在使用ajaxform向控制器提交一个表单。元素很少，其中一个是type=file。

我的控制器方法如下

    @RequestMapping(value = { "/addReplies" }, method = {
        org.springframework.web.bind.annotation.RequestMethod.POST,
        org.springframework.web.bind.annotation.RequestMethod.GET } )
@ResponseBody
public Map<String,Object> addReplies(
        @Valid @ModelAttribute("Replies") Replies replies,
        BindingResult result, HttpServletRequest request,
        HttpServletResponse response,Locale locale,Principal principal,
        @RequestParam(value = "fileData2",required=false) CommonsMultipartFile fileData2[]) throws ServletException,
        IOException {
             //perform some opraton
        }

如果数据中有附件可用，则一切正常，否则不会进入此方法。

如果我从方法中移除@RequestParam(value = "fileData2",required=false) CommonsMultipartFile fileData2[]此参数，那么效果不错，但通过这种方式我无法获得附件。

请尽量了解我的问题，并尽快给我一切可能的解决方案。

如果我不使用ajax并使用regul

提交表单，则此方法运行良好

Answer 1

要正常上传文件，您需要在表单中使用encType =“multipart / form-data”。如果你想使用Ajax上传文件，你需要使用它的方法

或

您要上传文件，在序列化ajaxForm之前首先检查它是否为filepart为null，如果为null，则禁用该元素以获得更长的可用性并提交

beforeSerialize: function($form, options){
//before serializing the data have to disable element if the data is not avaliable
         $(".attachfile").filter(function(){ 
              return !this.value; }).attr("disabled", "disabled");
         },

Answer 2

我也是这样做的但我的编码也在工作

做这个解决方案

@RequestMapping(value="/saveUserTask", method=RequestMethod.POST)
@ResponseBody
public Map<String,String> saveUserTask(
        @RequestParam( value = "title" , required = false) String title,
        @RequestParam( value = "projectid" , required = false) int projectid,
        @RequestParam( value = "mileid" , required = false,defaultValue ="-1") int mileid,
        @RequestParam( value = "responsible" , required = false) int responsible[],
        @RequestParam( value = "startDate" , required = false) Date startDate,
        @RequestParam( value = "endDate" , required = false) Date endDate,
        @RequestParam( value = "description" , required = false) String description,
        @RequestParam( value = "priority" , required = false, defaultValue="1") int priority,
        @RequestParam( value = "workHours" , required = false) int workHours,
        @RequestParam(value = "attachment" , required = false) MultipartFile myFile,
        HttpServletRequest request,Principal principal,RedirectAttributes redirectAttributes,Locale locale) throws ParseException, IOException{
    String fileAttachPath;
    if(myFile!=null)
        fileAttachPath=request.getSession().getServletContext().getRealPath("/WEB-INF/attechments/"+ new Date().getTime() + "_" + myFile.getOriginalFilename());
    else
        fileAttachPath="";
}

Answer 3

您之前是否尝试过提交ajax表单数据对象？

@RequestMapping(value ="/settingsSim",method=RequestMethod.POST)
   @ResponseBody
   public Map uploadSimSettings(@RequestBody String body) {
    /*
    some controller logic 
    */
   }

Answer 4

我刚刚这样做了：

$("#myform").bind('ajax:complete', function() {
    // tasks to do  with ajax submit
});

事情很完美。

有关更具体的详细信息，请参阅此api documentation。

如果附件不可用，则ajaxform不提交值

4 个答案: