新增针对mysql中json类型与Model映射处理器.用于处理集合的泛型不是String类型的

fm-mybatis/src/main/java/com/persagy/fm/mybatis/handler/DbJsonTypeHandler.java

@@ -0,0 +1,46 @@
+package com.persagy.fm.mybatis.handler;
+
+import cn.hutool.json.JSONUtil;
+import com.baomidou.mybatisplus.extension.handlers.AbstractJsonTypeHandler;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.ibatis.type.JdbcType;
+import org.apache.ibatis.type.MappedJdbcTypes;
+import org.apache.ibatis.type.MappedTypes;
+import org.springframework.util.Assert;
+/***
+ * Description: 针对mysql中json类型与Model映射处理器.用于处理集合的泛型不是String类型的
+ * @author : lijie
+ * @date :2021/4/27 15:18
+ * Update By lijie 2021/4/27 15:18
+ */
+@Slf4j
+@MappedTypes({ Object.class })
+@MappedJdbcTypes(JdbcType.VARCHAR)
+public class DbJsonTypeHandler extends AbstractJsonTypeHandler<Object> {
+
+    private final Class<?> clazz;
+
+    public DbJsonTypeHandler(Class<?> type, Class<?> innerType) {
+        if (log.isTraceEnabled()) {
+            log.trace("JacksonTypeHandler(" + type + ")");
+        }
+        Assert.notNull(type, "Type argument cannot be null");
+
+        this.clazz = innerType;
+    }
+
+    @Override
+    protected Object parse(String json) {
+        if (JSONUtil.isJsonArray(json)) {
+            return JSONUtil.toList(JSONUtil.parseArray(json), this.clazz);
+        } else {
+            return JSONUtil.toBean(json, this.clazz);
+        }
+    }
+
+    @Override
+    protected String toJson(Object obj) {
+        return JSONUtil.toJsonStr(obj);
+    }
+
+}