Http工具类 同时 post上传 多文件到服务器

package com.httpfileup.activity;


import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;


public class HttpFileUpTool {
	/**
	 * 通过拼接的方式构造请求内容，实现参数传输以及文件传输
	 * 
	 * @param actionUrl
	 * @param params
	 * @param files
	 * @return
	 * @throws IOException
	 */
	public static void post(String actionUrl, Map<String, String> params,
			Map<String, File> files) throws IOException {


		String BOUNDARY = java.util.UUID.randomUUID().toString();
		String PREFIX = "--", LINEND = "\r\n";
		String MULTIPART_FROM_DATA = "multipart/form-data";
		String CHARSET = "UTF-8";


		URL uri = new URL(actionUrl);
		HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
		conn.setReadTimeout(5 * 1000); // 缓存的最长时间
		conn.setDoInput(true);// 允许输入
		conn.setDoOutput(true);// 允许输出
		conn.setUseCaches(false); // 不允许使用缓存
		conn.setRequestMethod("POST");
		conn.setRequestProperty("connection", "keep-alive");
		conn.setRequestProperty("Charsert", "UTF-8");
		conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA
				+ ";boundary=" + BOUNDARY);


		// 首先组拼文本类型的参数
		StringBuilder sb = new StringBuilder();
		for (Map.Entry<String, String> entry : params.entrySet()) {
			sb.append(PREFIX);
			sb.append(BOUNDARY);
			sb.append(LINEND);
			sb.append("Content-Disposition: form-data; name=\""
					+ entry.getKey() + "\"" + LINEND);
			sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
			sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
			sb.append(LINEND);
			sb.append(entry.getValue());
			sb.append(LINEND);
		}


		DataOutputStream outStream = new DataOutputStream(conn
				.getOutputStream());
		outStream.write(sb.toString().getBytes());
		InputStream in = null;
		// 发送文件数据
		if (files != null){
			for (Map.Entry<String, File> file : files.entrySet()) {
				StringBuilder sb1 = new StringBuilder();
				sb1.append(PREFIX);
				sb1.append(BOUNDARY);
				sb1.append(LINEND);
				sb1
						.append("Content-Disposition: form-data; name=\"file\"; filename=\""
								+ file.getKey() + "\"" + LINEND);
				sb1.append("Content-Type: application/octet-stream; charset="
						+ CHARSET + LINEND);
				sb1.append(LINEND);
				outStream.write(sb1.toString().getBytes());


				InputStream is = new FileInputStream(file.getValue());
				byte[] buffer = new byte[1024];
				int len = 0;
				while ((len = is.read(buffer)) != -1) {
					outStream.write(buffer, 0, len);
				}


				is.close();
				outStream.write(LINEND.getBytes());
			}


		// 请求结束标志
		byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
		outStream.write(end_data);
		outStream.flush();
		// 得到响应码
		int res = conn.getResponseCode();
		if (res == 200) {
			in = conn.getInputStream();
			int ch;
			StringBuilder sb2 = new StringBuilder();
			while ((ch = in.read()) != -1) {
				sb2.append((char) ch);
			}
		}
		outStream.close();
		conn.disconnect();
		}
//		return in.toString();
	}
}

package com.httpfileup.activity;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
	/** Called when the activity is first created. */
	public static final String TAG = "MainActivity";
	Button button;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		button = (Button) findViewById(R.id.button);
		 button.setOnClickListener(listener);
	}

	String code = "";

	/**
	 * 按钮响应事件
	 */
	private View.OnClickListener listener = new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			Button button = (Button) v;
			switch (button.getId()) {
			case R.id.button:
				String actionUrl = "";
				Map<String, String> params = new HashMap<String, String>();
				params.put("title", "strParamValue");
				params.put("remark", "strParamValue");
				params.put("usemame", "strParamValue");
				params.put("usertel", "strParamValue");
				params.put("eventime", "strParamValue");
				params.put("evenaddress", "strParamValue");
				params.put("addtime", "strParamValue");
				params.put("edittime", "strParamValue");
				params.put("muploadid", "strParamValue");
				Map<String, File> files = new HashMap<String, File>();
				files.put("1.jpg", new File("/sdcard/1.jpg"));
				files.put("3.jpg", new File("/sdcard/3.jpg"));
				files.put("6.jpg", new File("/sdcard/6.jpg"));
				try {
						HttpFileUpTool.post(actionUrl, params, files);
					} catch (IOException e) {
						e.printStackTrace();
						Log.i(TAG, e.toString());
					}
//					Log.i(TAG, "code:"+code);
				break;
			}
		}
	};

}