HttpClient上传大文件并显示发送的字节数

我找到了这个代码示例

import org.apache.http.params.CoreProtocolPNames; import org.apache.http.util.EntityUtils; public class PostFile { public static void main(String[] args) throws Exception { HttpClient httpclient = new DefaultHttpClient(); httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); HttpPost httppost = new HttpPost("http://localhost:9001/upload.php"); File file = new File("c:/TRASH/zaba_1.jpg"); MultipartEntity mpEntity = new MultipartEntity(); ContentBody cbFile = new FileBody(file, "image/jpeg"); mpEntity.addPart("userfile", cbFile); httppost.setEntity(mpEntity); System.out.println("executing request " + httppost.getRequestLine()); HttpResponse response = httpclient.execute(httppost); HttpEntity resEntity = response.getEntity(); System.out.println(response.getStatusLine()); if (resEntity != null) { System.out.println(EntityUtils.toString(resEntity)); } if (resEntity != null) { resEntity.consumeContent(); } httpclient.getConnectionManager().shutdown(); } } 

我只是想知道如何获得上传的字节总和？

Answer 1

覆盖FileBody.writeTo(OutputStream)以在写入时计算字节数。 这允许在上载期间和完成之后发送的字节数（即使被中断）。

 public class FileBodyCounter extends FileBody { private volatile long byteCount; public long getBytesWritten() { return byteCount; } public void writeTo(OutputStream out) { super.writeTo(new FilterOutputStream(out) { // Other write() methods omitted for brevity. Implement for better performance public void write(int b) throws IOException { byteCount++; super.write(b); } }); } } 

使用它而不是标准的FileBody ，并在上传期间或post完成后检索字节数。