72 lines
2.1 KiB
Java
72 lines
2.1 KiB
Java
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package io.dataease.utils;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.core.StreamReadConstraints;
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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.ObjectMapper;
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import org.apache.commons.lang3.ObjectUtils;
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import java.util.Collections;
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import java.util.List;
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public class JsonUtil {
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private static final ObjectMapper objectMapper;
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static {
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objectMapper = new ObjectMapper();
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// 配置更大的 StreamReadConstraints 限制
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objectMapper.getFactory().setStreamReadConstraints(
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StreamReadConstraints.builder()
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.maxStringLength(50000000)
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.build()
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);
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objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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}
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public static <T> T parse(String json, Class<T> classOfT) {
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T t = null;
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try {
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t = objectMapper.readValue(json, new TypeReference<T>() {
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});
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} catch (JsonProcessingException e) {
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LogUtil.error(e.getMessage(), e);
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}
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return t;
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}
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public static <T> T parseObject(String json, Class<T> classOfT) {
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if (json == null) return null;
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T t = null;
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try {
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t = objectMapper.readValue(json, classOfT);
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} catch (JsonProcessingException e) {
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LogUtil.error(e.getMessage(), e);
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}
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return t;
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}
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public static <T> List<T> parseList(String json, TypeReference<List<T>> classOfT) {
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if (ObjectUtils.isEmpty(json)) return Collections.emptyList();
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List<T> t = null;
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try {
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t = objectMapper.readValue(json, classOfT);
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} catch (JsonProcessingException e) {
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LogUtil.error(e.getMessage(), e);
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}
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return t;
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}
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public static Object toJSONString(Object o) {
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try {
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return objectMapper.writeValueAsString(o);
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} catch (JsonProcessingException e) {
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LogUtil.error(e.getMessage(), e);
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return null;
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}
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}
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}
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