/* * Copyright 2002-2020 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.springframework.messaging.converter;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.StringReader;import java.io.StringWriter;import java.io.Writer;import java.util.Arrays;import javax.xml.transform.Result;import javax.xml.transform.Source;import javax.xml.transform.stream.StreamResult;import javax.xml.transform.stream.StreamSource;import org.springframework.beans.TypeMismatchException;import org.springframework.messaging.Message;import org.springframework.messaging.MessageHeaders;import org.springframework.oxm.Marshaller;import org.springframework.oxm.Unmarshaller;import org.springframework.util.Assert;import org.springframework.util.MimeType;/** * Implementation of {@link MessageConverter} that can read and write XML using Spring's * {@link Marshaller} and {@link Unmarshaller} abstractions. * * <p>This converter requires a {@code Marshaller} and {@code Unmarshaller} before it can * be used. These can be injected by the {@linkplain #MarshallingMessageConverter(Marshaller) * constructor} or {@linkplain #setMarshaller(Marshaller) bean properties}. * * @author Arjen Poutsma * @since 4.2 * @see Marshaller * @see Unmarshaller */public class MarshallingMessageConverter extends AbstractMessageConverter { private Marshaller marshaller; private Unmarshaller unmarshaller; /** * Default construct allowing for {@link #setMarshaller(Marshaller)} and/or * {@link #setUnmarshaller(Unmarshaller)} to be invoked separately. */ public MarshallingMessageConverter() { this(new MimeType("application", "xml"), new MimeType("text", "xml"), new MimeType("application", "*+xml")); } /** * Constructor with a given list of MIME types to support. * @param supportedMimeTypes the MIME types */ public MarshallingMessageConverter(MimeType... supportedMimeTypes) { super(Arrays.asList(supportedMimeTypes)); } /** * Constructor with {@link Marshaller}. If the given {@link Marshaller} also