Java Extjs fileupload-fileitem.getName（）为空

以下是文件上载的代码：

extjs

java文件

        DiskFileUpload diskfileupload = new DiskFileUpload();
        long maxfilesize =1*1024*1024;//1MB         
        System.out.println("Max File size allowed is (in bytes) :: "+maxfilesize);
        diskfileupload.setSizeMax(maxfilesize);
        diskfileupload.setSizeThreshold(4096);

        System.out.println("===> Uploading the file to :: "+FilePaths.UPLD_DEST_DIR_PATH);
        diskfileupload.setRepositoryPath(FilePaths.UPLD_DEST_DIR_PATH);

        List list = diskfileupload.parseRequest(request);
        for(Iterator iterator = list.iterator(); iterator.hasNext();){
            fileitem = (FileItem)iterator.next();
            if(!fileitem.isFormField()){
                if(fileitem.getSize() < 1){
                    //Added by Sowbakia for AppSecIssues-ContentValidation
                    errorflag   = true;
                    errorMsg    = "Not a valid Excel file"; 
                    //Add End
                }
                //throw new Exception("No file was uplaoded");
                String s = fileitem.getName();
                System.out.println(fileitem+"--"+s);
                inputstream = fileitem.getInputStream();
            }
        }

在文件名的位置，我收到一个空字符串。这不允许我上载文件。
谁能帮我解决这个问题吗？

类InnerThread2{
私人整数倒计时=5；
私有线程t；
公共InnerThread2（字符串名称）{
t=新线程（名称）{
公开募捐{
while（true）{
System.out.println（本文件）；
如果（--倒计时==0）
返回；
试一试{
睡眠（10）；
}捕捉（中断异常e）{
抛出新的运行时异常（e）；
}
}
}
公共字符串toString（）{
返回getName（）+“：”+倒计时；
}
};
t、 start（）；
}
}

是否希望我将其作为内部类添加到方法中？你能解释一下吗？我试过其他3种上传文件的方式，都没用。无论如何，在

fileitem.getName（）

上给我一个空字符串。我认为我的代码的

extjs

部分有问题。有人能帮我吗？

        DiskFileUpload diskfileupload = new DiskFileUpload();
        long maxfilesize =1*1024*1024;//1MB         
        System.out.println("Max File size allowed is (in bytes) :: "+maxfilesize);
        diskfileupload.setSizeMax(maxfilesize);
        diskfileupload.setSizeThreshold(4096);

        System.out.println("===> Uploading the file to :: "+FilePaths.UPLD_DEST_DIR_PATH);
        diskfileupload.setRepositoryPath(FilePaths.UPLD_DEST_DIR_PATH);

        List list = diskfileupload.parseRequest(request);
        for(Iterator iterator = list.iterator(); iterator.hasNext();){
            fileitem = (FileItem)iterator.next();
            if(!fileitem.isFormField()){
                if(fileitem.getSize() < 1){
                    //Added by Sowbakia for AppSecIssues-ContentValidation
                    errorflag   = true;
                    errorMsg    = "Not a valid Excel file"; 
                    //Add End
                }
                //throw new Exception("No file was uplaoded");
                String s = fileitem.getName();
                System.out.println(fileitem+"--"+s);
                inputstream = fileitem.getInputStream();
            }
        }

Max File size allowed is (in bytes) :: 1048576
===> Uploading the file to :: /usr9/SIR06072/ifms/upld/indent
name=, StoreLocation=/usr9/SIR06072/ifms/upld/indent/upload__4272a855_14b151f83db__7f97_00000098.tmp, size=0bytes, isFormField=false, FieldName=importFile--