100 lines
2.6 KiB
Java
100 lines
2.6 KiB
Java
package com.ruoyi.common.utils;
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import cn.hutool.core.util.ArrayUtil;
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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 java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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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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public class JsonUtils {
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private static ObjectMapper objectMapper = new ObjectMapper();
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/**
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* 初始化 objectMapper 属性
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* <p>
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* 通过这样的方式，使用 Spring 创建的 ObjectMapper Bean
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*
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* @param objectMapper ObjectMapper 对象
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*/
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public static void init(ObjectMapper objectMapper) {
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JsonUtils.objectMapper = objectMapper;
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}
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public static String toJsonString(Object object) {
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if (StringUtils.isNull(object)) {
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return null;
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}
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try {
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return objectMapper.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 objectMapper.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 objectMapper.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 objectMapper.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 <T> Map<String, T> 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 objectMapper.readValue(text, new TypeReference<Map<String, T>>() {});
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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 objectMapper.readValue(text, objectMapper.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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