import java.io.ByteArrayOutputStream;
import java.io.File;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;


import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import com.lxb.uploadwithprogress.tool.Base64Coder;



import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.ThumbnailUtils;
import android.util.Log;

/**
 * UrlEncodedFormEntity上传
 */
public class HttpUrlEncodedFormEntityPost {
	/**
	 * 上传
	 * @param pathList
	 */	
	public static void upload(List<String> pathList) {
		String files = "FileUpload:";
		for (int i = 0; i < pathList.size(); i++) {			
			Log.i("HttpUrlEncodedFormEntityPost","filePath:"+pathList.get(i));
			//根据路径生成一个Bitmap
	                Bitmap  tBitmap = convertToBitmap(pathList.get(i),400,400);
	                //把Bitmap写进流里面
	                ByteArrayOutputStream stream = new ByteArrayOutputStream();
	                tBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
	                //把流转化为数组
			byte[] b = stream.toByteArray();
			// 将图片流以字符串形式存储下来
			String file = new String(Base64Coder.encodeLines(b));
			//设置一条分割线
			files+="---------------------------7da2137580612";
			//累加每一个文件转化成的String数据
			files+=file;
		}
		
		   
		HttpClient client = new DefaultHttpClient();
		// 设置上传参数
		List<NameValuePair> formparams = new ArrayList<NameValuePair>();
		formparams.add(new BasicNameValuePair("files", files));
		HttpPost post = new HttpPost("http://10.147.142.78:8080/FileUploadServlet/FileUpload?TAG=UEFE");
		UrlEncodedFormEntity entity;
		try {
			entity = new UrlEncodedFormEntity(formparams, "UTF-8");
			post.addHeader("Accept","text/javascript, text/html, application/xml, text/xml");
			post.addHeader("Accept-Charset", "GBK,utf-8;q=0.7,*;q=0.3");
			post.addHeader("Accept-Encoding", "gzip,deflate,sdch");
			post.addHeader("Connection", "Keep-Alive");
			post.addHeader("Cache-Control", "no-cache");
			post.addHeader("Content-Type", "application/x-www-form-urlencoded");
			post.setEntity(entity);			
			HttpResponse response = client.execute(post);
			Log.i("HttpUrlEncodedFormEntityPost","StatusCode: " + response.getStatusLine().getStatusCode());
			HttpEntity e = response.getEntity();
			Log.i("HttpUrlEncodedFormEntityPost","response :"+EntityUtils.toString(e));
			if (200 == response.getStatusLine().getStatusCode()) {
				Toast.makeTast(Activity,"上传完成",1000).show;
			} else {
				Toast.makeTast(Activity,"上传失败",1000).show();
			}
			client.getConnectionManager().shutdown();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	
	/**
	 * 根据路径生成一个Bitmap
	 * @param path
	 * @param w 指定宽
	 * @param h 指定高
	 * @return
	 */
	public static Bitmap convertToBitmap(String path, int w, int h) {
              BitmapFactory.Options opts = new BitmapFactory.Options();
              // 设置为ture只获取图片大小
              opts.inJustDecodeBounds = true;
              // 返回为空
              BitmapFactory.decodeFile(path, opts);
              int width = opts.outWidth;
              int height = opts.outHeight;
              int inSampleSize = 1; 
              if (height > w || width > h) {  
                  if (width > height) {  
                      inSampleSize = Math.round((float)height / (float)h);  
                  } else {  
                      inSampleSize = Math.round((float)width / (float)w);  
                  } 
              }
              opts.inSampleSize = inSampleSize;
              opts.inJustDecodeBounds = false;
              
              return BitmapFactory.decodeFile(path, opts);
         }
}

需要一个 Base64Coder.java

使用方法

List<String> filePathList = new ArrayList<String>();
filePathList.add(Environment.getExternalStorageDirectory()+ "/baidu/cache/image/" + "12778991134.png");
filePathList.add(Environment.getExternalStorageDirectory()+ "/baidu/cache/image/" + "123457894146.png");

new Thread(new Runnable() {
    public void run() {			
        HttpUrlEncodedFormEntityPost.upload(filePathList);	
    }
}).start();

[多文件上传三]利用UrlEncodedFormEntity表单实现