
com.huaweicloud.sdk.iot.device.utils.JsonUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2020-2023 Huawei Cloud Computing Technology Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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package com.huaweicloud.sdk.iot.device.utils;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.NullNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.Map;
/**
* json工具类
*/
public class JsonUtil {
private static final Logger log = LogManager.getLogger(JsonUtil.class);
private static final ObjectMapper objectMapper = new ObjectMapper();
static {
objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
}
public static ObjectNode convertObject2ObjectNode(T object) {
if (null == object) {
return null;
} else {
ObjectNode objectNode = null;
if (object instanceof String) {
objectNode = (ObjectNode) convertJsonStringToObject((String) object, ObjectNode.class);
} else {
objectNode = (ObjectNode) convertValue(object, ObjectNode.class);
}
return objectNode;
}
}
public static T convertValue(Object fromValue, Class toValueType) {
try {
return objectMapper.convertValue(fromValue, toValueType);
} catch (IllegalArgumentException e) {
log.error("convert value failed " + e.getMessage());
return null;
}
}
public static String convertObject2String(T object) {
if (null == object) {
return null;
} else {
String rStr = null;
try {
rStr = objectMapper.writeValueAsString(object);
return rStr;
} catch (JsonProcessingException var3) {
log.error("write value as string failed" + var3.getMessage());
return null;
}
}
}
public static T convertObjectNode2Object(ObjectNode objectNode, Class cls) {
if (null == objectNode) {
return null;
}
T object = null;
object = convertValue(objectNode, cls);
return object;
}
public static T convertMap2Object(Map map, Class cls) {
if (null == map) {
return null;
}
T object = null;
object = convertValue(map, cls);
return object;
}
public static T convertJsonStringToObject(String jsonString, Class cls) {
if (jsonString == null) {
return null;
} else {
try {
T object = objectMapper.readValue(jsonString, cls);
return object;
} catch (Exception var3) {
log.error("read value failed" + var3.getMessage());
return null;
}
}
}
public static T convertJsonStringToObject(String jsonString, TypeReference> valueTypeRef) {
if (jsonString == null) {
return null;
} else {
try {
return (T) objectMapper.readValue(jsonString, valueTypeRef);
} catch (Exception var3) {
log.error("read value failed" + var3.getMessage());
return null;
}
}
}
public static ObjectNode createObjectNode() {
return objectMapper.createObjectNode();
}
public static String getJsonValue(JsonNode jsonNode, String fieldName) {
JsonNode node = getJsonNode(jsonNode, fieldName);
return node == null ? null : node.asText();
}
public static String getJsonValue2(JsonNode jsonNode, String fieldName) {
JsonNode node = getJsonNode(jsonNode, fieldName);
return null != node && !(node instanceof NullNode) ? node.asText() : null;
}
public static JsonNode getJsonNode(JsonNode jsonNode, String fieldName) {
if (jsonNode != null) {
JsonNode valueNode = jsonNode.findValue(fieldName);
return valueNode;
} else {
log.error("The input is invalid.");
return null;
}
}
public static String convertObject2StringIgnoreNullField(Object object) {
if (null == object) {
return null;
} else {
ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
String rStr = null;
try {
rStr = mapper.writeValueAsString(object);
} catch (JsonProcessingException var4) {
log.error("write value as string failed" + var4.getMessage());
}
return rStr;
}
}
}
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