package com.dl.common.utils;
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import cn.hutool.core.lang.Dict;
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import cn.hutool.core.util.ArrayUtil;
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import cn.hutool.core.util.ObjectUtil;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.core.type.TypeReference;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.exc.MismatchedInputException;
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import com.dl.common.utils.spring.SpringUtils;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* JSON 工具类
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*
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* @author 芋道源码
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*/
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public class JsonUtils {
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private static final ObjectMapper OBJECT_MAPPER = SpringUtils.getBean(ObjectMapper.class);
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public static ObjectMapper getObjectMapper() {
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return OBJECT_MAPPER;
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}
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public static String toJsonString(Object object) {
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if (ObjectUtil.isNull(object)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.writeValueAsString(object);
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} catch (JsonProcessingException e) {
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throw new RuntimeException(e);
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}
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}
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public static <T> T parseObject(String text, Class<T> clazz) {
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if (StringUtils.isEmpty(text)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.readValue(text, clazz);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static <T> T parseObject(byte[] bytes, Class<T> clazz) {
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if (ArrayUtil.isEmpty(bytes)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.readValue(bytes, clazz);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static <T> T parseObject(String text, TypeReference<T> typeReference) {
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if (StringUtils.isBlank(text)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.readValue(text, typeReference);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static Dict parseMap(String text) {
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if (StringUtils.isBlank(text)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.readValue(text, OBJECT_MAPPER.getTypeFactory().constructType(Dict.class));
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} catch (MismatchedInputException e) {
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// 类型不匹配说明不是json
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return null;
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static List<Dict> parseArrayMap(String text) {
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if (StringUtils.isBlank(text)) {
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return null;
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}
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try {
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return OBJECT_MAPPER.readValue(text, OBJECT_MAPPER.getTypeFactory().constructCollectionType(List.class, Dict.class));
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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public static <T> List<T> parseArray(String text, Class<T> clazz) {
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if (StringUtils.isEmpty(text)) {
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return new ArrayList<>();
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}
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try {
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return OBJECT_MAPPER.readValue(text, OBJECT_MAPPER.getTypeFactory().constructCollectionType(List.class, clazz));
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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