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

问题描述

我在一个java服务器端应用程序中使用 Apache Commons FileUpload ，它有一个HTML格式的字段：

1. 目的地邮箱将填充目标邮箱的电子邮件地址
   
2. 包含发件人邮件的邮件文本


3. A<输入类型=文件...字段上传照片。我可以接收上传的文件（作为流），但是如何
   

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

我想接收太多的输入文本字段（即1）和2）） - 由应用程序的用户完成）

我想使用 org.apache.commons.fileupload.FileItem 来访问这些文件，但是我收到 java.rmi.server.UID是一个限制class

解决方案

您应该使用 FileItemIterator Apache Commons FileUpload 。
$ b

  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（））{
 //常规表单域
 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）; 
} 
} 
  

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

1. A destination fied that will be filled with email address of the destination mailbox
2. A message text with a message of the sender
3. A < input type=file ... field for uploading a photo. I can receive uploaded file (as a stream) but how

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

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

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

解决方案

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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