org.primefaces.webapp.MultipartRequest Maven / Gradle / Ivy
/*
* Copyright 2009-2013 PrimeTek.
*
* 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 org.primefaces.webapp;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class MultipartRequest extends HttpServletRequestWrapper {
private static final Logger logger = Logger.getLogger(MultipartRequest.class.getName());
private Map> formParams;
private Map> fileParams;
private Map parameterMap;
public MultipartRequest(HttpServletRequest request, ServletFileUpload servletFileUpload) throws IOException {
super(request);
formParams = new LinkedHashMap>();
fileParams = new LinkedHashMap>();
parseRequest(request, servletFileUpload);
}
@SuppressWarnings("unchecked")
private void parseRequest(HttpServletRequest request, ServletFileUpload servletFileUpload) throws IOException {
try {
List fileItems = servletFileUpload.parseRequest(request);
for(FileItem item : fileItems) {
if(item.isFormField())
addFormParam(item);
else
addFileParam(item);
}
} catch (FileUploadException e) {
logger.log(Level.SEVERE, "Error in parsing fileupload request", e);
throw new IOException(e.getMessage(), e);
}
}
private void addFileParam(FileItem item) {
if(fileParams.containsKey(item.getFieldName())) {
fileParams.get(item.getFieldName()).add(item);
}
else {
List items = new ArrayList();
items.add(item);
fileParams.put(item.getFieldName(), items);
}
}
private void addFormParam(FileItem item) {
if(formParams.containsKey(item.getFieldName())) {
formParams.get(item.getFieldName()).add(getItemString(item));
}
else {
List items = new ArrayList();
items.add(getItemString(item));
formParams.put(item.getFieldName(), items);
}
}
private String getItemString(FileItem item) {
try {
String characterEncoding = getRequest().getCharacterEncoding();
return (characterEncoding == null) ? item.getString() : item.getString(characterEncoding);
} catch (UnsupportedEncodingException e) {
logger.log(Level.SEVERE, "Unsupported character encoding " + getRequest().getCharacterEncoding(), e);
return item.getString();
}
}
@Override
public String getParameter(String name) {
if(formParams.containsKey(name)) {
List values = formParams.get(name);
if(values.isEmpty()) {
return "";
}
else {
return values.get(0);
}
}
else {
return super.getParameter(name);
}
}
@Override
public Map getParameterMap() {
if(parameterMap == null) {
Map map = new LinkedHashMap();
for(String formParam : formParams.keySet()) {
map.put(formParam, formParams.get(formParam).toArray(new String[0]));
}
map.putAll(super.getParameterMap());
parameterMap = Collections.unmodifiableMap(map);
}
return parameterMap;
}
@Override
public Enumeration getParameterNames() {
Set paramNames = new LinkedHashSet();
paramNames.addAll(formParams.keySet());
Enumeration original = super.getParameterNames();
while(original.hasMoreElements()) {
paramNames.add(original.nextElement());
}
return Collections.enumeration(paramNames);
}
@Override
public String[] getParameterValues(String name) {
if(formParams.containsKey(name)) {
List values = formParams.get(name);
if(values.isEmpty()) {
return new String[0];
}
else {
return values.toArray(new String[values.size()]);
}
}
else {
return super.getParameterValues(name);
}
}
public FileItem getFileItem(String name) {
if(fileParams.containsKey(name)) {
List items = fileParams.get(name);
return items.get(0);
}
else {
return null;
}
}
}