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mybatis 配置的 configuration 属性下添加:
default-fetch-size: 100
说明: 修改mybatis默认提取数据大小(默认为10),修改后每次查询数据提取一次100条,大批量查询数数据时,减少与oracle数据库交互提高加载数据速度,但是数据库每次查询使用内存増大,需要谨慎使用,防止OOM