mybatis 配置

设置项

所有项目中用到的配置建议全部在mybatis-config.xml中显示配置，否则版本升级后，如果官方的默认配置变了，将对程序造成不可预知的影响

说明	setting	discription	valid values	defualt
设置自增主键	useGeneratedKeys	Allows JDBC support for generated keys. A compatible driver is required. This setting forces generated keys to be used if set to true, as some drivers deny compatibility but still work (e.g. Derby).	true \| false	false
设置默认的执行器类型，如果使用批量插入sql，需要在单独的insert标签上配置	defaultExecutorType	Configures the default executor. SIMPLE executor does nothing special. REUSE executor reuses prepared statements. BATCH executor reuses statements and batches updates.	SIMPLE REUSE BATCH	SIMPLE
日志前缀配置，配置后与logback中的logger=name对应	logPrefix	Specifies the prefix string that MyBatis will add to the logger names.	Any String	Not set
默认的日志实现，配置后支持自动发现，标准都使用SLF4j,没有配置则使用mybatis自己的console输出	logImpl	If this setting is not present logging implementation will be autodiscovered.	SLF4J \| LOG4J \| LOG4J2 \| JDK_LOGGING \|COMMONS_LOGGING\|STDOUT_LOGGING \|NO_LOGGING	Not set