Android以流形式上传文件

import java.io.File;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

import com.vsstoo.vbox.util.SDCardUtil;
import com.vsstoo.vbox.util.StringUtil;

import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

public class UploadTask extends AsyncTask<String, Void, String> {
private Handler handler;
private String uriPath = "";
private static final String TAG = "UploadTask";

public UploadTask(Handler handler, String urlPath) {
this.handler = handler;
this.uriPath = urlPath;
}

public UploadTask(String urlPath) {
this.uriPath = urlPath;
}

@Override
protected String doInBackground(String... params) {
File file = new File(params[0]);
return upload(file);
}

@Override
protected void onPostExecute(String result) {
//处理上传返回结果
}

/**
* 上传文件
* @param file
* @return
*/

private String upload(File file) {
HttpResponse response = null;
// File file = new File(imageUrl);
String re = "";
try {
String httpUrl = uriPath;// + "?acctId=" + acctId;
// if (!StringUtil.isEmpty(param)) {
// httpUrl += "?" + param;
// }
HttpPost request = new HttpPost(httpUrl);
HttpClient httpClient = new DefaultHttpClient();
FileEntity entity = new FileEntity(file, "binary/octet-stream");
request.setEntity(entity);
entity.setContentEncoding("binary/octet-stream");
response = httpClient.execute(request);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
// 发送请求
HttpEntity resEntity = response.getEntity();
re = (resEntity == null) ? "" : EntityUtils.toString(resEntity,
"UTF-8");
}
} catch (Exception e) {
e.printStackTrace();
}
return re;
}
}