进一步优化 json 工具类，默认使用 Spring 初始化出来的

src/main/java/cn/iocoder/dashboard/util/json/JsonUtils.java

@@ -0,0 +1,62 @@
+package cn.iocoder.dashboard.util.json;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.util.Set;
+
+/**
+ * JSON 工具类
+ *
+ * @author 芋道源码
+ */
+public class JsonUtils {
+
+    private static ObjectMapper objectMapper = new ObjectMapper();
+
+    /**
+     * 初始化 objectMapper 属性
+     *
+     * 通过这样的方式，使用 Spring 创建的 ObjectMapper Bean
+     *
+     * @param objectMapper ObjectMapper 对象
+     */
+    public static void init(ObjectMapper objectMapper) {
+        JsonUtils.objectMapper = objectMapper;
+    }
+
+    public static String toJsonString(Object object) {
+        try {
+            return objectMapper.writeValueAsString(object);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static <T> T parseObject(String text, Class<T> clazz) {
+        try {
+            return objectMapper.readValue(text, clazz);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static <T> T parseObject(byte[] bytes, Class<T> clazz) {
+        try {
+            return objectMapper.readValue(bytes, clazz);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static Object parseObject(String text, TypeReference<Set<Long>> typeReference) {
+        try {
+            return objectMapper.readValue(text, typeReference);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}