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   源码介绍

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文件上传

package com.ilovn.libs.fileupload;

import java.io.File;
import java.io.IOException;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.FormBodyPart;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.EntityUtils;

import android.os.AsyncTask;
import android.util.Log;
import android.webkit.URLUtil;

import com.ilovn.libs.fileupload.CustomMultiPartEntity.ProgressListener;

/**
 * 文件上传
 * 
 * @author zhaoyong
 * 
 */
public class HttpMultipartPost extends AsyncTask<HttpResponse, Integer, String> {
	private static final String TAG = HttpMultipartPost.class.getSimpleName();
	private String url;
	private long totalSize;
	private String[] files;
	private FormBodyPart[] parts;
	private CallBack mCallBack;
	private CallBackMsg mCallBackMsg;

	/**
	 * 
	 * @param url
	 * @param files
	 *            文件路径
	 * @param parts
	 *            其他参数
	 */
	public HttpMultipartPost(String url, String[] files, FormBodyPart... parts) {
		super();
		this.url = url;
		this.files = files;
		this.parts = parts;
	}

	@Override
	protected void onPreExecute() {
		if (!URLUtil.isNetworkUrl(url)) {
			throw new IllegalArgumentException("unvalid url for post!");
		}
	}

	@Override
	protected String doInBackground(HttpResponse... arg0) {
		HttpClient httpClient = new DefaultHttpClient();
		HttpContext httpContext = new BasicHttpContext();
		HttpPost httpPost = new HttpPost(url);

		try {
			CustomMultiPartEntity multipartContent = new CustomMultiPartEntity(
					new ProgressListener() {
						@Override
						public void transferred(long num) {
							publishProgress((int) ((num / (float) totalSize) * 100));
						}
					});
			// add all file
			for (String file : files) {
				multipartContent.addPart("files", new FileBody(new File(file)));
			}
			// add other parts
			for (FormBodyPart part : parts) {
				multipartContent.addPart(part);
			}
			totalSize = multipartContent.getContentLength();

			// Send it
			httpPost.setEntity(multipartContent);
			HttpResponse response = httpClient.execute(httpPost, httpContext);
			String serverResponse = EntityUtils.toString(response.getEntity());
			return serverResponse;
		} catch (IOException e) {
			return "{\"msg\":\"post failed!\"}";
		}
	}

	@Override
	protected void onProgressUpdate(Integer... progress) {
		if (mCallBack != null) {
			mCallBack.update(progress[0]);
		}
	}

	@Override
	protected void onPostExecute(String param) {
		Log.d(TAG, param   "");
		if (mCallBackMsg != null) {
			mCallBackMsg.msg(param);
		}
	}

	public void setCallBack(CallBack mCallBack) {
		this.mCallBack = mCallBack;
	}

	public void setCallBackMsg(CallBackMsg mCallBackMsg) {
		this.mCallBackMsg = mCallBackMsg;
	}

	public interface CallBack {
		public void update(Integer i);
	}

	public interface CallBackMsg {
		public void msg(String msg);
	}
}