Android上传文本携带参数

public static String doFilePost(String urlstr, Map<String, String> map,Map<String, File> files) throws Exception {
    String BOUNDARY = "-------------------------acebdf13572468"; // 定义数据分隔线
    String LINE_END = "\r\n";
    URL url = new URL(urlstr);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    // 发送POST请求必须设置如下两行
    connection.setDoOutput(true);
    connection.setDoInput(true);
    connection.setUseCaches(false);
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Accept", "*/*");
    connection.setRequestProperty("connection", "Keep-Alive");
    connection.setRequestProperty("user-agent", "Android WYJ");
    connection.setRequestProperty("Charsert", "UTF-8");
    connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
    OutputStream out = new DataOutputStream(connection.getOutputStream());
    byte[] end_data = ("--" + BOUNDARY + "--\r\n").getBytes();// 定义最后数据分隔线
    // 文件
    if (files != null && !files.isEmpty()) {
        for (Map.Entry<String, File> entry : files.entrySet()) {
            File file = entry.getValue();
            String fileName = entry.getKey();
            StringBuilder sb = new StringBuilder();
            sb.append("--");
            sb.append(BOUNDARY);
            sb.append("\r\n");
            sb.append("Content-Disposition: form-data;name=\"" + fileName+ "\";filename=\"" + file.getName() + "\"\r\n");
            sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);
            byte[] data = sb.toString().getBytes();
            out.write(data);
            DataInputStream in = new DataInputStream(new FileInputStream(file));
            int bytes = 0;
            byte[] bufferOut = new byte[1024];
            while ((bytes = in.read(bufferOut)) != -1) {
                out.write(bufferOut, 0, bytes);
            }
            out.write("\r\n".getBytes()); // 多个文件时，二个文件之间加入这个
            in.close();
        }
    }
    // 数据参数
    if (map != null && !map.isEmpty()) {
        for (Map.Entry<String, String> entry : map.entrySet()) {
            StringBuilder sb = new StringBuilder();
            sb.append("--");
            sb.append(BOUNDARY);
            sb.append("\r\n");
            sb.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"");
            sb.append("\r\n");
            sb.append("\r\n");
            sb.append(URLEncoder.encode(entry.getValue(),"utf-8"));
            sb.append("\r\n");
            Debug.d("map = "+sb.toString());
            byte[] data = sb.toString().getBytes();
            out.write(data);
        }
    }
    out.write(end_data);
    out.flush();
    out.close();
    int code = connection.getResponseCode();
    if (code == HttpURLConnection.HTTP_OK) {
        InputStream inStream = connection.getInputStream();
        byte[] number = read(inStream);
        String json = new String(number);
        Debug.d("result : " + json);
        return json;
    }
    return null;
}

public static byte[] read(InputStream inStream) throws IOException {
    ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];
    int len = 0;
    while ((len = inStream.read(buffer)) != -1) {
        outStream.write(buffer, 0, len);
    }
    inStream.close();
    outStream.close();
    return outStream.toByteArray();
}