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MyBatis——小知识:MyBatis_映射配置文件_#{}:更丰富的用法:
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发布时间:2019-03-04

本文共 369 字,大约阅读时间需要 1 分钟。

规定参数的一些规则:

javaType、 jdbcType、 mode(存储过程)、 numericScale、
resultMap、 typeHandler、 jdbcTypeName、 expression(未来准备支持的功能);

jdbcType通常需要在某种特定的条件下被设置:	在我们数据为null的时候,有些数据库可能不能识别mybatis对null的默认处理。比如Oracle(报错);		JdbcType OTHER:无效的类型;因为mybatis对所有的null都映射的是原生Jdbc的OTHER类型,oracle不能正确处理;		由于全局配置中:jdbcTypeForNull=OTHER;oracle不支持;两种办法	1、#{email,jdbcType=OTHER};	2、jdbcTypeForNull=NULL		

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