org.grails.web.servlet.mvc.OutputAwareHttpServletResponse.groovy Maven / Gradle / Ivy

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Grace Framework : Grace Web Common

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/*
 * Copyright 2016-2023 the 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
 *
 *      https://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.grails.web.servlet.mvc

import jakarta.servlet.ServletOutputStream
import jakarta.servlet.http.HttpServletResponseWrapper

import groovy.transform.CompileStatic
import groovy.transform.InheritConstructors

/**
 * Tracks whether getOutputStream() was called in order to prevent calls to getWriter() after
 * getOutputStream() has been called
 *
 *
 * @since 3.1.12
 * @author Graeme Rocher
 */
@CompileStatic
@InheritConstructors
class OutputAwareHttpServletResponse extends HttpServletResponseWrapper {

    /**
     * Whether the writer is available
     */
    boolean writerAvailable = true

    @Override
    PrintWriter getWriter() throws IOException {
        super.getWriter()
    }

    @Override
    ServletOutputStream getOutputStream() throws IOException {
        this.writerAvailable = false
        super.getOutputStream()
    }

}