com.livk.commons.jackson.util.JsonMapperUtils Maven / Gradle / Ivy
/*
* Copyright 2021-2024 spring-boot-extension 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 com.livk.commons.jackson.util;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.json.JsonMapper;
import com.fasterxml.jackson.databind.type.CollectionType;
import com.fasterxml.jackson.databind.type.MapType;
import com.livk.commons.jackson.core.JacksonSupport;
import lombok.experimental.UtilityClass;
import java.util.List;
import java.util.Map;
/**
* JsonMapper工具类，使用默认JsonMapper
*
* @author livk
*/
@UtilityClass
public class JsonMapperUtils {
private static final JacksonSupport JSON = new JacksonSupport(new JsonMapper());
/**
* 从obj读取json数据转成相应实体类
* @param 泛型
* @param obj 待读取的数据
* @param type 返回相关类型
* @return 相关实例
*/
public static T readValue(Object obj, Class type) {
return JSON.readValue(obj, type);
}
/**
* 从obj读取json数据转成相应实体类
* @param 泛型
* @param obj 待读取的数据
* @param type 相关类型
* @return 相关实例
*/
public static T readValue(Object obj, JavaType type) {
return JSON.readValue(obj, type);
}
/**
* 从obj读取json数据转成相应实体类
* @param 泛型
* @param obj 待读取的数据
* @param typeReference TypeReference包装的类型
* @return 相关实例
*/
public static T readValue(Object obj, TypeReference typeReference) {
return JSON.readValue(obj, typeReference);
}
/**
* obj序列化成string
* @param obj obj
* @return json string
*/
public static String writeValueAsString(Object obj) {
return JSON.writeValueAsString(obj);
}
/**
* obj序列化成byte[]
* @param obj the obj
* @return the byte [ ]
*/
public static byte[] writeValueAsBytes(Object obj) {
return JSON.writeValueAsBytes(obj);
}
/**
* json反序列化成List
*
* 也可以看看{@link JacksonSupport#readValue(Object, TypeReference)} ,
*
* {@link JacksonSupport#convertValue(Object, JavaType)}
* @param 泛型
* @param obj the obj
* @param type 类型
* @return the list
*/
public static List readValueList(Object obj, Class type) {
CollectionType collectionType = TypeFactoryUtils.collectionType(type);
return JSON.readValue(obj, collectionType);
}
/**
* json反序列化成Map
*
* 也可以看看{@link JacksonSupport#readValue(Object, TypeReference)} ,
*
* {@link JacksonSupport#convertValue(Object, JavaType)}
* @param the type parameter
* @param the type parameter
* @param obj the obj
* @param keyClass K Class
* @param valueClass V Class
* @return the map
*/
public static Map readValueMap(Object obj, Class keyClass, Class valueClass) {
MapType mapType = TypeFactoryUtils.mapType(keyClass, valueClass);
return JSON.readValue(obj, mapType);
}
/**
* obj读取数据转化成JsonNode
* @param obj the obj
* @return the json node
*/
public static JsonNode readTree(Object obj) {
return JSON.readTree(obj);
}
/**
* jackson数据转换
* @param 泛型
* @param fromValue 待转换数据
* @param type 返回类型
* @return 相关实例
*/
public static T convertValue(Object fromValue, Class type) {
return JSON.convertValue(fromValue, type);
}
/**
* jackson数据转换
* @param 泛型
* @param fromValue 待转换数据
* @param typeReference the type reference
* @return 相关实例
*/
public static T convertValue(Object fromValue, TypeReference typeReference) {
return JSON.convertValue(fromValue, typeReference);
}
/**
* jackson数据转换
* @param 泛型
* @param fromValue 待转换数据
* @param javaType 相关类型
* @return 相关实例
*/
public static T convertValue(Object fromValue, JavaType javaType) {
return JSON.convertValue(fromValue, javaType);
}
/**
* jackson数据转换List
* @param 泛型
* @param fromValue 待转换数据
* @param type 返回类型
* @return List
*/
public static List convertValueList(Object fromValue, Class type) {
CollectionType collectionType = TypeFactoryUtils.collectionType(type);
return JSON.convertValue(fromValue, collectionType);
}
/**
* jackson数据转换Map
* @param the type parameter
* @param the type parameter
* @param fromValue the fromValue
* @param keyClass the key class
* @param valueClass the value class
* @return MAP
*/
public static Map convertValueMap(Object fromValue, Class keyClass, Class valueClass) {
MapType mapType = TypeFactoryUtils.mapType(keyClass, valueClass);
return JSON.convertValue(fromValue, mapType);
}
}