?? exportresponsewrapper.java
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?/*
* Copyright 2004 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 org.ecside.filter;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
/**
* @author Jeff Johnston
*/
public final class ExportResponseWrapper extends HttpServletResponseWrapper {
private ByteArrayOutputStream output;
private int contentLength;
private String contentType;
public ExportResponseWrapper(HttpServletResponse response) {
super(response);
output = new ByteArrayOutputStream();
}
public byte[] getData() {
return output.toByteArray();
}
public ServletOutputStream getOutputStream() {
return new FilterServletOutputStream(output);
}
public PrintWriter getWriter() {
return new PrintWriter(getOutputStream(), true);
}
public void setContentLength(int length) {
this.contentLength = length;
super.setContentLength(length);
}
public int getContentLength() {
return contentLength;
}
public void setContentType(String type) {
this.contentType = type;
// super.setContentType(type);
}
public String getContentType() {
return contentType;
}
private static class FilterServletOutputStream extends ServletOutputStream {
private DataOutputStream stream;
public FilterServletOutputStream(OutputStream output) {
stream = new DataOutputStream(output);
}
public void write(int b) throws IOException {
stream.write(b);
}
public void write(byte[] b) throws IOException {
stream.write(b);
}
public void write(byte[] b, int off, int len) throws IOException {
stream.write(b, off, len);
}
}
}
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