001/* 002 * Copyright 2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.batch.item.json; 018 019import com.fasterxml.jackson.core.JsonProcessingException; 020import com.fasterxml.jackson.databind.ObjectMapper; 021 022import org.springframework.batch.item.ItemStreamException; 023 024/** 025 * A json object marshaller that uses <a href="https://github.com/FasterXML/jackson">Jackson</a> 026 * to marshal an object into a json representation. 027 * 028 * @param <T> type of objects to marshal 029 * @author Mahmoud Ben Hassine 030 * @since 4.1 031 */ 032public class JacksonJsonObjectMarshaller<T> implements JsonObjectMarshaller<T> { 033 034 private ObjectMapper objectMapper = new ObjectMapper(); 035 036 /** 037 * Set the {@link ObjectMapper} to use. 038 * @param objectMapper to use 039 */ 040 public void setObjectMapper(ObjectMapper objectMapper) { 041 this.objectMapper = objectMapper; 042 } 043 044 @Override 045 public String marshal(T item) { 046 try { 047 return objectMapper.writeValueAsString(item); 048 } catch (JsonProcessingException e) { 049 throw new ItemStreamException("Unable to marshal object " + item + " to Json", e); 050 } 051 } 052}