/**       * 模拟表单post       *       * @param textMap 文本域       * @param fileMap 文件       *       */      public static String postForm(String urlStr, Map<String, String> textMap, Map<String, String> fileMap) throws IOException {          String res = "";          HttpURLConnection conn = null;          InputStream inS = null;          OutputStream out = null;          String BOUNDARY = "---------------------------123821742118716"; //boundary就是request头和上传文件内容的分隔符          try {              URL url = new URL(urlStr);              conn = (HttpURLConnection) url.openConnection();              if (conn instanceof HttpsURLConnection) {                  ((HttpsURLConnection) conn).setSSLSocketFactory(sslSocketFactory);                  ((HttpsURLConnection) conn).setHostnameVerifier(trustAnyHostnameVerifier);              }                 conn.setConnectTimeout(19000);              conn.setReadTimeout(19000);              conn.setDoOutput(true);              conn.setDoInput(true);              conn.setUseCaches(false);              conn.setRequestMethod("POST");              conn.setRequestProperty("Connection", "Keep-Alive");              conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");              conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);                 out = new DataOutputStream(conn.getOutputStream());              // text value              if (textMap != null) {                  StringBuffer strBuf = new StringBuffer();                  Iterator iter = textMap.entrySet().iterator();                  while (iter.hasNext()) {                      Map.Entry entry = (Map.Entry) iter.next();                      String inputName = (String) entry.getKey();                      String inputValue = (String) entry.getValue();                      if (inputValue == null) {                          continue;                      }                      strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");                      strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");                      strBuf.append(inputValue);                  }                  out.write(strBuf.toString().getBytes());              }                 // file              if (fileMap != null) {                  Iterator iter = fileMap.entrySet().iterator();                  while (iter.hasNext()) {                      Map.Entry entry = (Map.Entry) iter.next();                      String inputName = (String) entry.getKey();                      String inputValue = (String) entry.getValue();                      if (inputValue == null) {                          continue;                      }                      File file = new File(inputValue);                      String filename = file.getName();                      String contentType = new MimetypesFileTypeMap().getContentType(file);                      if (filename.endsWith(".png")) {                          contentType = "image/png";                      } else if (filename.endsWith(".gif")) {                          contentType = "image/gif";                      } else if (filename.endsWith(".jpg")) {                          contentType = "image/jpeg";                      }                      if (contentType == null || contentType.equals("")) {                          contentType = "application/octet-stream";                      }                         StringBuffer strBuf = new StringBuffer();                      strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");                      strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"; filename=\"" + filename + "\"\r\n");                      strBuf.append("Content-Type:" + contentType + "\r\n\r\n");                         out.write(strBuf.toString().getBytes());                         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);                      }                  }              }                 byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();              out.write(endData);              out.flush();                 // 读取返回数据              StringBuffer strBuf = new StringBuffer();              inS = conn.getInputStream();              BufferedReader reader = new BufferedReader(new InputStreamReader(inS));              String line = null;              while ((line = reader.readLine()) != null) {                  strBuf.append(line).append("\n");              }              res = strBuf.toString();              reader.close();              reader = null;          } catch (Exception e) {              e.printStackTrace();          } finally {              if (out != null) {                  out.close();              }              if (inS != null) {                  inS.close();              }              if (conn != null) {                  conn.disconnect();                  conn = null;              }          }          return res;      }