package tech.powerjob.common.serialize;
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import com.fasterxml.jackson.annotation.JsonInclude;
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import com.fasterxml.jackson.core.JsonParser;
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import com.fasterxml.jackson.core.type.TypeReference;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.MapperFeature;
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import com.fasterxml.jackson.databind.json.JsonMapper;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.lang3.exception.ExceptionUtils;
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import tech.powerjob.common.exception.ImpossibleException;
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import tech.powerjob.common.exception.PowerJobException;
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import java.io.IOException;
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import java.util.HashMap;
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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 tjq
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* @since 2020/4/16
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*/
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@Slf4j
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public class JsonUtils {
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private static final JsonMapper JSON_MAPPER = JsonMapper.builder()
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.configure(MapperFeature.PROPAGATE_TRANSIENT_MARKER, true)
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.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true)
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.configure(JsonParser.Feature.IGNORE_UNDEFINED, true)
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.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
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.build();
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static {
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JSON_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
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// 非核心功能可降级,尽可能降低依赖冲突概率
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try {
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JSON_MAPPER.registerModule(new com.fasterxml.jackson.datatype.jsr310.JavaTimeModule());
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} catch (Exception e) {
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log.warn("[JsonUtils] registerJavaTimeModule failed, PowerJob can't process Java 8 date/time type now!", e);
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}
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}
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private static final TypeReference<Map<String, Object>> MAP_TYPE_REFERENCE = new TypeReference<Map<String, Object>> () {};
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private JsonUtils(){
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}
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public static String toJSONString(Object obj) {
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if (obj == null) {
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return null;
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}
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if (obj instanceof String) {
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return (String) obj;
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}
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try {
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return JSON_MAPPER.writeValueAsString(obj);
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}catch (Exception e) {
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log.error("[PowerJob] toJSONString failed", e);
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}
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return null;
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}
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public static String toJSONStringUnsafe(Object obj) {
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if (obj instanceof String) {
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return (String) obj;
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}
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try {
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return JSON_MAPPER.writeValueAsString(obj);
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}catch (Exception e) {
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ExceptionUtils.rethrow(e);
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}
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throw new ImpossibleException();
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}
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public static byte[] toBytes(Object obj) {
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try {
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return JSON_MAPPER.writeValueAsBytes(obj);
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}catch (Exception e) {
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log.error("[PowerJob] serialize failed", e);
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}
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return null;
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}
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public static <T> T parseObject(String json, Class<T> clz) throws Exception {
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return JSON_MAPPER.readValue(json, clz);
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}
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public static Map<String, Object> parseMap(String json) {
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if (StringUtils.isEmpty(json)) {
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return new HashMap<>();
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}
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try {
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return JSON_MAPPER.readValue(json, MAP_TYPE_REFERENCE);
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} catch (Exception e) {
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ExceptionUtils.rethrow(e);
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}
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throw new ImpossibleException();
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}
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public static <T> T parseObject(byte[] b, Class<T> clz) throws IOException {
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return JSON_MAPPER.readValue(b, clz);
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}
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public static <T> T parseObject(byte[] b, TypeReference<T> typeReference) throws IOException {
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return JSON_MAPPER.readValue(b, typeReference);
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}
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public static <T> T parseObject(String json, TypeReference<T> typeReference) throws IOException {
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return JSON_MAPPER.readValue(json, typeReference);
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}
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public static <T> T parseObjectIgnoreException(String json, Class<T> clz) {
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if (StringUtils.isEmpty(json)) {
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return null;
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}
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try {
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return JSON_MAPPER.readValue(json, clz);
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}catch (Exception e) {
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log.error("unable to parse json string to object,current string:{}",json,e);
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return null;
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}
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}
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public static <T> T parseObjectUnsafe(String json, Class<T> clz) {
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try {
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return JSON_MAPPER.readValue(json, clz);
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}catch (Exception e) {
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ExceptionUtils.rethrow(e);
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}
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throw new PowerJobException("impossible");
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}
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}
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