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/*
* 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.apache.jasper.runtime;
import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletOutputStream;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpServletResponseWrapper;
import jakarta.servlet.jsp.JspWriter;
/**
* ServletResponseWrapper used by the JSP 'include' action. This wrapper response object is passed to
* RequestDispatcher.include(), so that the output of the included resource is appended to that of the including page.
*
* @author Pierre Delisle
*/
public class ServletResponseWrapperInclude extends HttpServletResponseWrapper {
/**
* PrintWriter which appends to the JspWriter of the including page.
*/
private final PrintWriter printWriter;
private final JspWriter jspWriter;
public ServletResponseWrapperInclude(ServletResponse response, JspWriter jspWriter) {
super((HttpServletResponse) response);
this.printWriter = new PrintWriter(jspWriter);
this.jspWriter = jspWriter;
}
/**
* @return a wrapper around the JspWriter of the including page.
*/
@Override
public PrintWriter getWriter() throws IOException {
return printWriter;
}
@Override
public ServletOutputStream getOutputStream() throws IOException {
throw new IllegalStateException();
}
/**
* Clears the output buffer of the JspWriter associated with the including page.
*/
@Override
public void resetBuffer() {
try {
jspWriter.clearBuffer();
} catch (IOException ioe) {
// Ignore
}
}
}
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