java中的HTTP多部分类

我正试着按照这个问题的答案

但似乎默认的Android包中不包含类，因为该代码：

File file = new File("FileToSend.txt"); HttpClient client = new HttpClient(); String url = "http://www.yourdomain.com/destination.php"; PostMethod postMethod = new PostMethod(url); Part[] parts = {new FilePart(file.getName(), file)}; postMethod.setParameter("name", "value"); // set parameters like this instead in separate call postMethod.setRequestEntity( new MultipartRequestEntity(parts, postMethod.getParams())); int status = client.executeMethod(postMethod); 

我有以下错误：

 Cannot instantiate the type HttpClient FilePart cannot be resolved to a type XXXXX.java MultipartRequestEntity cannot be resolved to a type XXXXX.java Part cannot be resolved to a type XXXXX.java PostMethod cannot be resolved to a type XXXXX.java 

如何解决这些错误，我必须添加一些库吗？ 如果是，请让我知道如何下载它。

Answer 1

HttpClient （现在）是一个接口。 请改用DefaultHttpClient 。 这是您列出的其他一些替代课程：

  FilePart  -  FileBody
 MultipartRequestEntity  -  MultipartEntity
部分 -  ContentBody
 PostMethod  -  HttpPost