我正在尝试从Android手机上传图像到自定义MediaWiki网站 . 不幸的是，我试图上传的图片不起作用 . 这是我用来发送多部分请求的功能：
public void upLoadImage(URL url, String filename, String path, String edittoken) throws IOException, SAXException {
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("POST");
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
try {
// ------------------ CLIENT REQUEST
FileInputStream fileInputStream = new FileInputStream(new File(path));
System.out.println("Filestreaminput");
EdittokenParser m = new EdittokenParser();
cookies = m.Returncookie();
con.setRequestProperty("Cookie", cookies);
// con.setRequestProperty("Content-Transfer-Encoding", "base64");
con.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
//con.setRequestProperty("Connection", "Keep-Alive");
//con.setRequestProperty("Content-Type",
// "multipart/form-data;boundary=" + boundary);
DataOutputStream dos = new DataOutputStream( con.getOutputStream() );
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpUploadFile\";"+"filename=\"/storage/emulated/0/Pictures/test.jpg\"" + lineEnd);
dos.writeBytes("Content-Type: image/jpeg"+ lineEnd);
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 100000;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[] buffer = new byte[bytesAvailable];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bytesAvailable);
while (bytesRead > 0) {
dos.write(buffer, 0, bytesAvailable);
bytesAvailable = fileInputStream.available();
bytesAvailable = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bytesAvailable);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpDestFile\";" + lineEnd);
dos.writeBytes(filename);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpEditToken\";" + lineEnd);
dos.writeBytes(edittoken);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpUploadDescription\";" + lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpDestFileWarningAck\";" + lineEnd);
dos.writeBytes("1");
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\title\";" + lineEnd);
dos.writeBytes("Special:Upload");
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"wpUpload\";" + lineEnd);
dos.writeBytes("Upload Token");
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// close streams
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
System.out.println("Malformed url exception");
}
catch (IOException ioe) {
System.out.println("ioexception");
//cookies=cookies+ cookieList.get(0);
} finally {
con.disconnect();
}
我发送的参数是URL（在我的例子中是mydomainname / mediawiki / index.php / Special：upload），我希望在MediaWiki网站上调用上传文件的文件名，路径指向我的图像的文件，以及我编码URL的edittoken（我需要这样做吗？）
没有错误，它只是不上传 .
感谢大家！
非常感谢您的帮助！
哎呀抱歉只是更新EditTokenParser只返回会话的cookie .
我也试过使用MultipartEntity类，但仍然没有运气 . 这会返回一个nullpointer异常（但我不知道在哪里！）这是我使用的代码：
public void uploadUserPhoto(File file, String url, String pageid, String edittoken) {
try {
EdittokenParser m = new EdittokenParser();
String cookies = m.Returncookie();
HttpPost httppost = new HttpPost(url);
MultipartEntity multipartEntity = new MultipartEntity();
System.out.println("File size:");
long length = file.length();
System.out.println(length);
System.out.println(file);
// Charset chars = Charset.forName("UTF-8");
FileBody fileBody = new FileBody(file, "test.jpg", "image/jpeg", "UTF-8");
//System.out.println(fileBody);
multipartEntity.addPart("wpUploadFile", fileBody);
multipartEntity.addPart("wpDestFile", new StringBody("Before"+pageid+".jpg"));
multipartEntity.addPart("wpUploadDescription", new StringBody(""));
multipartEntity.addPart("wpLicense", new StringBody(""));
System.out.println(edittoken);
multipartEntity.addPart("wpEditToken", new StringBody(edittoken));
multipartEntity.addPart("title", new StringBody("Special:Upload"));
// multipartEntity.addPart("wpDestFilWarningAck", new StringBody("1"));
multipartEntity.addPart("wpUpload", new StringBody("Upload file"));
httppost.addHeader("Cookie", cookies);
httppost.addHeader("Content-Type", "text/html; charset=utf-8");
httppost.setEntity(multipartEntity);
System.out.println("Does the post work here?");
mHttpClient.execute(httppost, new PhotoUploadResponseHandler());
System.out.println("Does the post not work here?");
} catch (Exception e) {
System.out.println(e);
}
}
private class PhotoUploadResponseHandler implements ResponseHandler {
@Override
public Object handleResponse(HttpResponse response)
throws ClientProtocolException, IOException {
HttpEntity r_entity = response.getEntity();
String responseString = EntityUtils.toString(r_entity);
Log.d("UPLOAD", responseString);
return null;
}
}
使用Firebug for Firefox，这是我需要发送的内容：
----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; NAME = “wpUploadFile”; filename =“DSC01886.JPG”Content-Type：image / jpeg（image bytes）----------------------------- 6910536459470485392043487056 Content-处置：表格数据; name =“wpDestFile”testtesttest.jpg ----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“wpUploadDescription”----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“wpLicense”----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“wpEditToken”7207f4c1f1ea4f9608d51c5c7e04dccf \ ----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“title”Special：Upload ----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“wpDestFileWarningAck”1 ----------------------------- 6910536459470485392043487056 Content-Disposition：form-data; name =“wpUpload”上传文件----------------------------- 6910536459470485392043487056--