org.springframework.kafka.support.converter.StringJsonMessageConverter.java Source code

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Here is the source code for org.springframework.kafka.support.converter.StringJsonMessageConverter.java

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/*
 * Copyright 2016-2019 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.kafka.support.converter;

import org.springframework.messaging.Message;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * JSON Message converter - String on output, String, Bytes, or byte[] on input. Used in
 * conjunction with Kafka
 * {@code StringSerializer/StringDeserializer or BytesDeserializer}. Consider using the
 * BytesJsonMessageConverter instead.
 *
 * @author Gary Russell
 * @author Artem Bilan
 * @author Dariusz Szablinski
 */
public class StringJsonMessageConverter extends JsonMessageConverter {

    public StringJsonMessageConverter() {
        super();
    }

    public StringJsonMessageConverter(ObjectMapper objectMapper) {
        super(objectMapper);
    }

    @Override
    protected Object convertPayload(Message<?> message) {
        try {
            return getObjectMapper().writeValueAsString(message.getPayload());
        } catch (JsonProcessingException e) {
            throw new ConversionException("Failed to convert to JSON", e);
        }
    }

}