46 lines
1.4 KiB
Java
46 lines
1.4 KiB
Java
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package com.zdjizhi.tools.json;
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import cn.hutool.log.Log;
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import cn.hutool.log.LogFactory;
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import com.alibaba.fastjson2.JSONPath;
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import com.alibaba.fastjson2.JSONReader;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* @author qidaijie
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* @Package com.zdjizhi.tools.json
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* @Description:
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* @date 2023/5/1917:51
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*/
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public class JsonPathUtil {
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private static final Log logger = LogFactory.get();
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private static Map<String, JSONPath> jsonPathMap = new ConcurrentHashMap<>(16);
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/**
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* 根据表达式使用JsonPath解析数据
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*
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* @param message json
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* @param expr 解析表达式
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* @return 解析结果
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*/
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public static Object analysis(String message, String expr) {
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Object flattenResult = "";
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try {
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JSONReader parser = JSONReader.of(message);
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if (jsonPathMap.containsKey(expr)) {
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flattenResult = jsonPathMap.get(expr).extract(parser);
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} else {
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JSONPath jsonPath = JSONPath.of(expr);
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jsonPathMap.put(expr, jsonPath);
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flattenResult = jsonPath.extract(parser);
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}
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} catch (ClassCastException | ArrayIndexOutOfBoundsException e) {
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logger.error("The label resolution exception or [expr] analytic expression error" + e.getMessage());
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}
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return flattenResult;
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}
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}
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