在Struts 2中实现文件上传

    public void setMyFileContentType(String contentType) {
        this .contentType = contentType;
   }
   
    public void setMyFileFileName(String fileName) {
        this .fileName = fileName;
   }
       
    public void setMyFile(File myFile) {
        this .myFile = myFile;
   }
   
    public String getImageFileName()