package com.mindskip.xzs.utility;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.JavaType;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.List;
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/**
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* @version 2.2.0
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* @description: Json工具类
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* Copyright (C), 2020-2021, 武汉思维跳跃科技有限公司
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* @date 2021 /9/7 9:45
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*/
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public class JsonUtil {
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private static final ObjectMapper MAPPER = new ObjectMapper();
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private static final Logger logger = LoggerFactory.getLogger(JsonUtil.class);
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static {
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MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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}
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/**
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* To json str string.
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*
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* @param <T> the type parameter
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* @param o the o
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* @return the string
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*/
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public static <T> String toJsonStr(T o) {
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try {
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return MAPPER.writeValueAsString(o);
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} catch (JsonProcessingException e) {
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logger.error(e.getMessage(), e);
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}
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return null;
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}
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/**
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* To json object t.
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*
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* @param <T> the type parameter
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* @param json the json
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* @param valueType the value type
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* @return the t
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*/
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public static <T> T toJsonObject(String json, Class<T> valueType) {
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try {
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return MAPPER.<T>readValue(json, valueType);
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} catch (IOException e) {
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logger.error(e.getMessage(), e);
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}
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return null;
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}
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/**
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* To json list object list.
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*
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* @param <T> the type parameter
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* @param json the json
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* @param valueType the value type
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* @return the list
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*/
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public static <T> List<T> toJsonListObject(String json, Class<T> valueType) {
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try {
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JavaType getCollectionType = MAPPER.getTypeFactory().constructParametricType(List.class, valueType);
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List<T> list = MAPPER.readValue(json, getCollectionType);
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return list;
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} catch (IOException e) {
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logger.error(e.getMessage(), e);
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}
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return null;
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}
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/**
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* To json object t.
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*
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* @param <T> the type parameter
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* @param stream the stream
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* @param valueType the value type
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* @return the t
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*/
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public static <T> T toJsonObject(InputStream stream, Class<T> valueType) {
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try {
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T object = MAPPER.<T>readValue(stream, valueType);
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return object;
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} catch (IOException e) {
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logger.error(e.getMessage(), e);
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}
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return null;
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}
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}
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