org.tsugi.jackson.JacksonUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2015- Charles R. Severance
*
* 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
*
* http://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.tsugi.jackson;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectWriter;
import lombok.extern.slf4j.Slf4j;
/**
* Some Tsugi Utility code for to make using Jackson easier to use.
*/
@SuppressWarnings("deprecation")
@Slf4j
public class JacksonUtil {
// http://stackoverflow.com/questions/6176881/how-do-i-make-jackson-pretty-print-the-json-content-it-generates
public static String prettyPrint(Object obj)
throws com.fasterxml.jackson.core.JsonProcessingException {
ObjectMapper mapper = new ObjectMapper();
// ***IMPORTANT!!!*** for Jackson 2.x use the line below instead of the one above:
// ObjectWriter writer = mapper.writer().withDefaultPrettyPrinter();
// return mapper.writeValueAsString(obj);
ObjectWriter writer = mapper.writerWithDefaultPrettyPrinter();
return writer.writeValueAsString(obj);
}
public static String prettyPrintLog(Object obj) {
try {
return prettyPrint(obj);
} catch (com.fasterxml.jackson.core.JsonProcessingException e) {
log.error(e.getMessage(), e);
return null;
}
}
public static String toString(Object jackson) {
// https://www.baeldung.com/jackson-object-mapper-tutorial
ObjectMapper objectMapper = new ObjectMapper();
try {
String retval = objectMapper.writeValueAsString(jackson);
return retval;
} catch (JsonProcessingException e) {
log.error(e.getMessage(), e);
return null;
}
}
public static ObjectMapper getLaxObjectMapper()
{
ObjectMapper mapper = new ObjectMapper()
.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true)
.configure(DeserializationFeature.FAIL_ON_UNRESOLVED_OBJECT_IDS, false)
.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, false)
.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
return mapper;
}
}