spring ProtobufJsonFormatMessageConverter 源码
spring ProtobufJsonFormatMessageConverter 代码
文件路径：/spring-messaging/src/main/java/org/springframework/messaging/converter/ProtobufJsonFormatMessageConverter.java
/*
* 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 com.google.protobuf.ExtensionRegistry;
import com.google.protobuf.util.JsonFormat;
import org.springframework.lang.Nullable;
/**
* Subclass of {@link ProtobufMessageConverter} for use with the official
* {@code "com.google.protobuf:protobuf-java-util"} library for JSON support.
*
* <p>Most importantly, this class allows for custom JSON parser and printer
* configurations through the {@link JsonFormat} utility. If no special parser
* or printer configuration is given, default variants will be used instead.
*
* <p>Requires Protobuf 3.x and {@code "com.google.protobuf:protobuf-java-util"} 3.x,
* with 3.3 or higher recommended.
*
* @author Rossen Stoyanchev
* @since 5.2.2
*/
public class ProtobufJsonFormatMessageConverter extends ProtobufMessageConverter {
/**
* Constructor with default instances of {@link com.google.protobuf.util.JsonFormat.Parser
* JsonFormat.Parser}, {@link com.google.protobuf.util.JsonFormat.Printer
* JsonFormat.Printer}, and {@link ExtensionRegistry}.
*/
public ProtobufJsonFormatMessageConverter(@Nullable ExtensionRegistry extensionRegistry) {
this(null, null);
}
/**
* Constructor with given instances of {@link com.google.protobuf.util.JsonFormat.Parser
* JsonFormat.Parser}, {@link com.google.protobuf.util.JsonFormat.Printer
* JsonFormat.Printer}, and a default instance of {@link ExtensionRegistry}.
*/
public ProtobufJsonFormatMessageConverter(
@Nullable JsonFormat.Parser parser, @Nullable JsonFormat.Printer printer) {
this(parser, printer, null);
}
/**
* Constructor with given instances of {@link com.google.protobuf.util.JsonFormat.Parser
* JsonFormat.Parser}, {@link com.google.protobuf.util.JsonFormat.Printer
* JsonFormat.Printer}, and {@link ExtensionRegistry}.
*/
public ProtobufJsonFormatMessageConverter(@Nullable JsonFormat.Parser parser,
@Nullable JsonFormat.Printer printer, @Nullable ExtensionRegistry extensionRegistry) {
super(new ProtobufJavaUtilSupport(parser, printer), extensionRegistry);
}
}
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