mybatis mapper传入list出错

去掉if后可以运行，但是达不到预期要求

Unable to make public int java.util.Arrays$ArrayList.size() accessible: module java.base does not "opens java.util" to unnamed module @3fa77460

org.apache.ibatis.exceptions.PersistenceException:

Error querying database. Cause: java.lang.reflect.InaccessibleObjectException: Unable to make public int java.util.Arrays$ArrayList.size() accessible: module java.base does not "opens java.util" to unnamed module @3fa77460

Cause: java.lang.reflect.InaccessibleObjectException: Unable to make public int java.util.Arrays$ArrayList.size() accessible: module java.base does not "opens java.util" to unnamed module @3fa77460

Mapper参数增加@Param注解指定名称为你if标签中使用的名称list ，parameterType可以不指定

在Mapper接口方法中，给参数加上注解 @Param("list")