/**
* Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
*
* 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 com.jfinal.render;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import com.jfinal.template.Engine;
/**
* TemplateRender
*/
public class TemplateRender extends Render {
private static Engine engine;
private static final String contentType = "text/html; charset=" + getEncoding();
static void init(Engine engine) {
if (engine == null) {
throw new IllegalArgumentException("engine can not be null");
}
TemplateRender.engine = engine;
}
public TemplateRender(String view) {
this.view = view;
}
public String getContentType() {
return contentType;
}
public void render() {
response.setContentType(getContentType());
Map<Object, Object> data = new HashMap<Object, Object>();
for (Enumeration<String> attrs=request.getAttributeNames(); attrs.hasMoreElements();) {
String attrName = attrs.nextElement();
data.put(attrName, request.getAttribute(attrName));
}
PrintWriter writer = null;
try {
writer = response.getWriter();
engine.getTemplate(view).render(data, writer);
} catch (Exception e) {
throw new RenderException(e);
}
finally {
if (writer != null) {
writer.close();
}
}
}
public String toString() {
return view;
}
}