public class MultipartRequest extends Request<String> { private final Listener<String> mListener; private Map<String, String> headerMap; private Map<String, String> mParams; private FormFile[] files; private String BOUNDARY = "---------7dc05dba8f3e19";  public MultipartRequest(String url, Listener<String> listener, Map<String, String> params, FormFile[] files) { this(Method.POST, url, listener, params, files); }  public MultipartRequest(int method, String url, Listener<String> listener, Map<String, String> params, FormFile[] files) { super(method, url, listener); mListener = listener; mParams = params; this.files = files; }  @Override public Map<String, String> getHeaders() throws AuthFailureError { headerMap = new HashMap<String, String>(); headerMap.put("Charset", "UTF-8"); //Keep-Alive headerMap.put("Connection", "Keep-Alive"); headerMap.put("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); return headerMap; }  @Override public byte[] getBody() throws AuthFailureError { //傳參數(shù) StringBuilder sb = new StringBuilder(); for (Map.Entry<String, String> entry : mParams.entrySet()) {  // 構建表單字段內(nèi)容  sb.append("--");  sb.append(BOUNDARY);  sb.append("/r/n");  sb.append("Content-Disposition: form-data; name=/"" + entry.getKey() + "/"/r/n/r/n");  sb.append(entry.getValue());  sb.append("/r/n"); } return sb.toString().getBytes(); }  @Override public void handRequest(OutputStream out) { DataOutputStream dos = (DataOutputStream) out; try {  //發(fā)送文件數(shù)據(jù)  if (files != null) {  for (FormFile file : files) {   // 發(fā)送文件數(shù)據(jù)   StringBuilder split = new StringBuilder();   split.append("--");   split.append(BOUNDARY);   split.append("/r/n");   split.append("Content-Disposition: form-data;name=/"" + file.getParameterName() + "/";filename=/"" + file.getFilname() + "/"/r/n");   split.append("Content-Type: " + file.getContentType() + "/r/n/r/n");   dos.write(split.toString().getBytes());   if (file.getInStream() != null) {   byte[] buffer = new byte[1024];   int len = -1;   int count = 0;   while ((len = file.getInStream().read(buffer)) != -1) {    dos.write(buffer, 0, len);    count += len;    if (mListener != null) {    mListener.onProgressChange(file.getFileSize(), count);    }   }   count = 0;   file.getInStream().close();   } else {   dos.write(file.getData(), 0, file.getData().length);   }   dos.write("/r/n".getBytes());  }  }  dos.writeBytes("--" + BOUNDARY + "--/r/n");  dos.flush(); } catch (IOException e) {  mListener.onError(new VolleyError(e.toString()));  try {  dos.close();  } catch (IOException e1) {  e1.printStackTrace();  } } }  @Override protected Response<String> parseNetworkResponse(NetworkResponse response) { String parsed; try {  parsed = new String(response.data, HttpHeaderParser.parseCharset(response.headers)); } catch (UnsupportedEncodingException e) {  parsed = new String(response.data); } return Response.success(parsed, HttpHeaderParser.parseCacheHeaders(response)); }  @Override protected void deliverResponse(String response) { mListener.onSuccess(response); }  @Override public void deliverError(VolleyError error) { mListener.onError(error); }}