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src/main/java/com/yj/earth/common/util/JsonMapConverter.java

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+package com.yj.earth.common.util;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Map与JSON互相转换工具类
+ */
+@Slf4j
+public class JsonMapConverter {
+
+    private static final ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * 将 Map 转换为 JSON 字符串
+     */
+    public static String mapToJson(Map<String, Object> map) {
+        if (map == null || map.isEmpty()) {
+            return "{}";
+        }
+
+        try {
+            return objectMapper.writeValueAsString(map);
+        } catch (JsonProcessingException e) {
+            log.error("Map转JSON失败", e);
+            return null;
+        }
+    }
+
+    /**
+     * 将 JSON 字符串转换为 Map
+     */
+    public static Map<String, Object> jsonToMap(String json) {
+        if (json == null || json.trim().isEmpty()) {
+            return new HashMap<>(0);
+        }
+
+        try {
+            return objectMapper.readValue(json, new TypeReference<Map<String, Object>>() {});
+        } catch (Exception e) {
+            log.error("JSON转Map失败、JSON内容: {}", json, e);
+            return new HashMap<>(0);
+        }
+    }
+}