/**
* Copyright (C) 2012-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package controllers;
import java.io.IOException;
import java.io.InputStream;
import ninja.Context;
import ninja.Renderable;
import ninja.Result;
import ninja.Results;
import ninja.exceptions.InternalServerErrorException;
import ninja.i18n.Lang;
import ninja.utils.MimeTypes;
import ninja.utils.ResponseStreams;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.util.Streams;
import org.slf4j.Logger;
import com.google.common.io.ByteStreams;
import com.google.inject.Inject;
import com.google.inject.Singleton;
@Singleton
public class UploadController {
/**
* This is the system wide logger. You can still use any config you like. Or
* create your own custom logger.
*
* But often this is just a simple solution:
*/
@Inject
public Logger logger;
@Inject
Lang lang;
private final MimeTypes mimeTypes;
@Inject
public UploadController(MimeTypes mimeTypes) {
this.mimeTypes = mimeTypes;
}
public Result upload() {
// simply renders the default view for this controller
return Results.html();
}
/**
*
* This upload method expects a file and simply displays the file in the
* multipart upload again to the user (in the correct mime encoding).
*
* @param context
* @return
* @throws Exception
*/
public Result uploadFinish(Context context) throws Exception {
// we are using a renderable inner class to stream the input again to
// the user
Renderable renderable = new Renderable() {
@Override
public void render(Context context, Result result) {
try {
// make sure the context really is a multipart context...
if (context.isMultipart()) {
// This is the iterator we can use to iterate over the
// contents
// of the request.
FileItemIterator fileItemIterator = context
.getFileItemIterator();
while (fileItemIterator.hasNext()) {
FileItemStream item = fileItemIterator.next();
String name = item.getFieldName();
InputStream stream = item.openStream();
String contentType = item.getContentType();
if (contentType != null) {
result.contentType(contentType);
} else {
contentType = mimeTypes.getMimeType(name);
}
ResponseStreams responseStreams = context
.finalizeHeaders(result);
if (item.isFormField()) {
System.out.println("Form field " + name
+ " with value " + Streams.asString(stream)
+ " detected.");
} else {
System.out.println("File field " + name
+ " with file name " + item.getName()
+ " detected.");
// Process the input stream
ByteStreams.copy(stream,
responseStreams.getOutputStream());
}
}
}
} catch (IOException | FileUploadException exception) {
throw new InternalServerErrorException(exception);
}
}
};
return new Result(200).render(renderable);
}
}