/*******************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.ofbiz.webtools.print;
import java.util.Map;
import java.util.Locale;
import java.io.IOException;
import java.io.Writer;
import java.io.StringWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.codec.binary.Base64;
import org.ofbiz.service.LocalDispatcher;
import org.ofbiz.service.DispatchContext;
import org.ofbiz.base.util.UtilHttp;
import org.ofbiz.base.util.GeneralException;
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.entity.GenericValue;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.widget.screen.ScreenRenderer;
import org.ofbiz.widget.html.HtmlScreenRenderer;
/**
* FoPrintServerEvents
*/
public class FoPrintServerEvents {
public static final String module = FoPrintServerEvents.class.getName();
private static HtmlScreenRenderer htmlScreenRenderer = new HtmlScreenRenderer();
public static String getXslFo(HttpServletRequest req, HttpServletResponse resp) {
LocalDispatcher dispatcher = (LocalDispatcher) req.getAttribute("dispatcher");
Map<String, Object> reqParams = UtilHttp.getParameterMap(req);
reqParams.put("locale", UtilHttp.getLocale(req));
String screenUri = (String) reqParams.remove("screenUri");
if (UtilValidate.isNotEmpty(screenUri)) {
String base64String = null;
try {
byte[] bytes = FoPrintServerEvents.getXslFo(dispatcher.getDispatchContext(), screenUri, reqParams);
base64String = new String(Base64.encodeBase64(bytes));
} catch (GeneralException e) {
Debug.logError(e, module);
try {
resp.sendError(500);
} catch (IOException e1) {
Debug.logError(e1, module);
}
}
if (base64String != null) {
try {
Writer out = resp.getWriter();
out.write(base64String);
} catch (IOException e) {
try {
resp.sendError(500);
} catch (IOException e1) {
Debug.logError(e1, module);
}
}
}
}
return null;
}
public static byte[] getXslFo(DispatchContext dctx, String screen, Map<String, Object> parameters) throws GeneralException {
// run as the system user
GenericValue system = null;
try {
system = dctx.getDelegator().findOne("UserLogin", false, "userLoginId", "system");
} catch (GenericEntityException e) {
throw new GeneralException(e.getMessage(), e);
}
parameters.put("userLogin", system);
if (!parameters.containsKey("locale")) {
parameters.put("locale", Locale.getDefault());
}
// render and obtain the XSL-FO
Writer writer = new StringWriter();
try {
ScreenRenderer screens = new ScreenRenderer(writer, null, htmlScreenRenderer);
screens.populateContextForService(dctx, parameters);
screens.render(screen);
} catch (Throwable t) {
throw new GeneralException("Problems rendering FOP XSL-FO", t);
}
return writer.toString().getBytes();
}
}