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public class MultipartUtils {
private final String boundary = "*****";
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private DataOutputStream writer;
private ArrayList<NameValuePair> params;
private String lineEnd = "\r\n";
private boolean firstHeader = true;
/**
* This constructor initializes a new HTTP POST request with content type
* is set to multipart/form-data
*
* @param requestURL
* @param charset
* @throws IOException
*/
public MultipartUtils(String requestURL, String charset, String wsse)
throws IOException {
this.charset = charset;
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestMethod("POST");
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("Connection", "Keep-Alive");
// httpConn.setRequestProperty("ENCTYPE", "multipart/form-data");
httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("x-wsse", wsse);
outputStream = httpConn.getOutputStream();
writer = new DataOutputStream(outputStream);
writer.writeBytes("--" + boundary + lineEnd);
}
/**
* Adds a form field to the request
*
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
try {
writer.writeBytes("Content-Disposition: form-data; name=\"" + name + "\"" + lineEnd);
writer.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
writer.writeBytes("Content-Length: " + value.length() + lineEnd);
writer.writeBytes(lineEnd);
writer.writeBytes(value); // mobile_no is String variable
writer.writeBytes(lineEnd);
writer.writeBytes("--" + boundary + lineEnd);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Adds a upload file section to the request
*
* @param fieldName name attribute in <input type="file" name="..." />
* @param uploadFile a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
FileInputStream fileInputStream = new FileInputStream(uploadFile);
int maxBufferSize = 3 * 1024 * 1024;
byte[] buffer;
writer.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
writer.writeBytes(lineEnd);
// create a buffer of maximum size
int bytesAvailable = fileInputStream.available();
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
writer.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
/*
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
*/
}
/**
* Completes the request and receives response from the server.
*
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
// writer.append(LINE_FEED).flush();
// writer.append("--" + boundary + "--").append(LINE_FEED);
writer.writeBytes(lineEnd);
writer.writeBytes("--" + boundary + "--" + lineEnd);
writer.close();
// checks server's status code first
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
Log.d("MultipartUtils", "Server returned OK");
Log.d("MultipartUtils", "message de retour : " + httpConn.getResponseMessage());
BufferedReader reader = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status + "with message : " + httpConn.getResponseMessage());
}
return response;
}
private String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
String result = new String();
String twoHyphens = "--";
String boundary = "*****";
for (NameValuePair pair : params)
{
result += "Content-Disposition: form-data; name=\""+pair.getName()+"\"" + lineEnd;
result += lineEnd;
result += pair.getValue();
result += lineEnd;
result += twoHyphens + boundary + lineEnd;
}
return result.toString();
}
} |
Multipart, probleme d'envoie d'image
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