无法在sturt 1.1中使用apache fileupload读取文件

Question

我提出了如下ajax请求

**function uploadFiles(url, files) {
alert("sss");
  var formData = new FormData();
  for (var i = 0, file; file = files[i]; ++i) {
  alert("v"+file.name);
    formData.append("file", file);
  }
  var xhr = new XMLHttpRequest();
  xhr.open('POST', url, true);
  xhr.onload = function(e) {alert("'ddd111000") };
  xhr.send(formData);  // multipart/form-data
}**

它将文件发送到服务器，但当我尝试读取请求和其中文件时，它使用的是Strut1.1中的apache文件上传。它返回FileItem对象空列表。以下是我写的服务器端代码，请帮助我

// Create a factory for disk-based file items
                  DiskFileItemFactory factory = new DiskFileItemFactory();

              factory.setSizeThreshold(5000 * 1024);


              // Location to save data that is larger than maxMemSize.
              factory.setRepository(new File("G:\\Project\\"));

              // Create a new file upload handler
              ServletFileUpload upload = new ServletFileUpload(factory);


              // maximum file size to be uploaded.
              upload.setSizeMax( 5000 * 1024 );




              // Set factory constraints

              // Create a new file upload handler
              //ServletFileUpload upload = new ServletFileUpload(factory);


             // ServletFileUpload upload = new ServletFileUpload();
             // upload.getItemIterator(request);
              List items = upload.parseRequest(request);

项目列表为空。请给我代码或想法。

Answer 1

你不能用普通的AJAX上传文件。许多JS库中都有变通方法，所以最好使用一些JS库，比如Jquery。