android httpclient 下传文件

public void uploadFileClient()  {    Toast.makeText(this, "现在已经开始上传了！", Toast.LENGTH_LONG).show();    String targetURL = actionUrl;// 上传指定URL    File targetFile = new File(uploadFile);// 指定上传文件    PostMethod filePost = new PostMethod(targetURL);    try    {      // 通过以下方法可以模拟页面参数提交      // filePost.setParameter("name", "中文");      // filePost.setParameter("pass", "1234");      byte[] buffer = new byte[1024];      Part[] parts =      { new FilePart(targetFile.getName() + System.currentTimeMillis(),          targetFile) };      filePost.setRequestEntity(new MultipartRequestEntity(parts,          filePost.getParams()));      HttpClient client = new HttpClient();      client.getHttpConnectionManager().getParams()          .setConnectionTimeout(5000);      int status = client.executeMethod(filePost);      if (status == HttpStatus.SC_OK)      {        System.out.println("上传成功");        // 上传成功      } else      {        System.out.println("上传失败");        // 上传失败      }    } catch (Exception ex)    {      ex.printStackTrace();    } finally    {      filePost.releaseConnection();    }  }