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JAVA--JSON转换工具类

news 2025/6/28 1:40:47

JSON转换工具类

在这里插入图片描述

import com.alibaba.fastjson.JSONObject;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import jakarta.validation.constraints.NotNull;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.util.Arrays;
import java.util.Collections;
import java.util.Date;
import java.util.List;public class Json {private static final Logger logger = LoggerFactory.getLogger(Json.class);private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();static {// 如果为空则不输出OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);// 对于空的对象转json的时候不抛出错误OBJECT_MAPPER.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);// 禁用序列化日期为timestampsOBJECT_MAPPER.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);// 禁用遇到未知属性抛出异常OBJECT_MAPPER.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);}/*** 对象转json** @param object 对象* @return json*/public static String toJsonString(Object object) {try {return OBJECT_MAPPER.writeValueAsString(object);} catch (JsonProcessingException e) {logger.error("toJsonString() error: {}", e.getMessage());}return "";}/*** json转换换成对象** @param json  json* @param clazz clazz* @return Class*/public static <T> T parseObject(String json, Class<T> clazz) {if (json == null) {return null;}T result = null;try {result = OBJECT_MAPPER.readValue(json, clazz);} catch (Exception e) {logger.error("parseObject() error: {}", e.getMessage());}return result;}/*** json转换换成对象** @param src   src* @param clazz clazz* @return Class*/public static <T> T parseObject(byte[] src, Class<T> clazz) {T result = null;try {result = OBJECT_MAPPER.readValue(src, clazz);} catch (Exception e) {logger.error("parseObject() error: {}", e.getMessage());}return result;}@NotNull@SuppressWarnings("unused")public static ObjectMapper getObjectMapper() {return OBJECT_MAPPER;}/*** ** <a href="https://stackoverflow.com/questions/6349421/how-to-use-jackson-to-deserialise-an-array-of-objects">...</a>* * List<MyClass> myObjects = Arrays.asList(mapper.readValue(json, MyClass[].class))* * works up to 10 time faster than TypeReference.** @return List数组*/@SuppressWarnings("unused")public static <T> List<T> parseArray(String json, Class<T[]> clazz) {if (json == null) {return null;}T[] result = getTs(json, clazz);if (result == null) {return Collections.emptyList();}return Arrays.asList(result);}@Nullableprivate static <T> T[] getTs(String json, Class<T[]> clazz) {T[] result = null;try {result = OBJECT_MAPPER.readValue(json, clazz);} catch (Exception e) {logger.error("parseArray() error: {}", e.getMessage());}return result;}@SuppressWarnings("unused")public static <T> List<T> parseArray(byte[] src, Class<T[]> clazz) {T[] result = null;try {result = OBJECT_MAPPER.readValue(src, clazz);} catch (Exception e) {logger.error("parseArray() error: {}", e.getMessage());}if (result == null) {return Collections.emptyList();}return Arrays.asList(result);}/*** 转换成json节点，即map** @param jsonStr jsonStr* @return JsonNode*/@SuppressWarnings("unused")public static JsonNode parseJson(String jsonStr) {if (jsonStr == null) {return null;}JsonNode jsonNode = null;try {jsonNode = OBJECT_MAPPER.readTree(jsonStr);} catch (Exception e) {logger.error("parseJson() error: {}", e.getMessage());}return jsonNode;}@SuppressWarnings("unused")public static String[] PRODUCT_TIME_COLUMN = new String[]{"createTime", "updateTime", "checkTime"};@SuppressWarnings("unused")public static String[] ORDER_TIME_COLUMN = new String[]{"createTime", "updateTime", "payTime", "deliveryTime", "finallyTime", "shopCartTime", "cancelTime", "inquiryCheckTime"};@SuppressWarnings("unused")public static String[] SHARE_TIME_COLUMN = new String[]{"createTime", "updateTime", "payTime", "orderCompleteTime", "confirmTime", "applyTime", "submitTime", "callBackTime"};@SuppressWarnings("unused")public static JSONObject formatterDateToLong(@NotNull JSONObject json, String... keys) {if (keys != null) {for (String key : keys) {if (json.containsKey(key) && json.getDate(key) != null) {json.put(key, json.getDate(key).getTime());}}}return json;}@SuppressWarnings("unused")public static JSONObject formatterLongToDate(@NotNull JSONObject json, String... keys) {if (keys != null) {for (String key : keys) {if (json.containsKey(key) && json.getLong(key) != null) {json.put(key, new Date(json.getLong(key)));}}}return json;}@SuppressWarnings("unused")public static JSONObject formatterLongToLocalDateTime(JSONObject json, String... keys) {if (keys != null) {for (String key : keys) {if (json.containsKey(key) && json.getLong(key) != null) {json.put(key, TimeUtil.timestamp2LocalDateTime(json.getLong(key)));}}}return json;}}