在 GAE 上使用 apache 文件上传 [英] using apache fileupload on GAE

问题描述

我在 Java 服务器端应用程序中使用 Apache Commons FileUpload带有字段的 html 表单:

I use Apache Commons FileUpload in a java server-side app that has a html form with fields :

1. 将填写目标邮箱的电子邮件地址的目标字段
2. 带有发件人消息的消息文本
3. A

我想在 GAE 上上传这个应用程序.我可以接收上传的文件(作为流，使用 org.apache.commons.fileupload.FileItemStream).

This app I want to upload on GAE . I can receive uploaded file (as a stream , using org.apache.commons.fileupload.FileItemStream).

我也想收到输入文本字段(即 1) 和 2)) - 由应用程序用户完成)

I want to receive too input textfields (i.e. 1) and 2)) - completed by the user of app)

我想使用 org.apache.commons.fileupload.FileItem 访问这些，但我收到 java.rmi.server.UID 是一个受限类

I want to access these using org.apache.commons.fileupload.FileItem but I receive java.rmi.server.UID is a restricted class

推荐答案

您应该使用 Apache Commons FileUpload 的 html" rel="noreferrer">FileItemIterator.

You should use the FileItemIterator of the Apache Commons FileUpload.

import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import java.io.InputStream;
..
public void doPost(HttpServletRequest req, HttpServletResponse res)
      throws ServletException, IOException {
    try {
      ServletFileUpload upload = new ServletFileUpload();
      res.setContentType("text/plain");

      FileItemIterator iterator = upload.getItemIterator(req);
      while (iterator.hasNext()) {
        FileItemStream item = iterator.next();
        String name = item.getFieldName();
        InputStream stream = item.openStream();

        if (item.isFormField()) {
          //regular form field
          resp.getWriter().println(("Form:" + name + " : " + Streams.asString(stream));
        } else {
          //fileform field 
          resp.getWriter().println(("File:" +name + " : " + item.getName());
        }

      }
    } catch (Exception ex) {
      throw new ServletException(ex);
    }
}

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