/** * 可傳入多張圖片和參數 *  * @param actionUrl *   發送地址 * @param params *   文本參數 * @param files *   文件參數 * @return * @throws IOException */ public static String mulpost(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException { String result = "";  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); conn.setDoInput(true);// 允許輸入 conn.setDoOutput(true);// 允許輸出 conn.setUseCaches(false); conn.setRequestMethod("POST"); // Post方式 conn.setRequestProperty("connection", "keep-alive"); conn.setRequestProperty("Charsert", "UTF-8"); conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);  // 首先組拼文本類型的參數 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());  // 發送文件數據 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()); }  // 請求結束標志 byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes(); outStream.write(end_data); outStream.flush();  InputStream is = conn.getInputStream(); InputStreamReader isr = new InputStreamReader(is, "utf-8"); BufferedReader br = new BufferedReader(isr); result = br.readLine(); outStream.close(); conn.disconnect(); return result; }

<uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />