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This article will explain in detail the example analysis of iBATIS configuration class and operation class. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

Introduction to iBATIS configuration class

IBATIS configuration class 1, SqlMapFactoryBean has three variables configLocation-- configuration file storage address, sqlmap-- read the configuration file, the generated object, sqlMapProperties.

Spring uses the SqlMapFactoryBean class to read ibatis's configuration file and create a sqlmap. IBATIS reads resources from classpath, so make sure the configuration file is on top of classpath.

* cases:

< bean id= "sqlMap" class= "org.springframework.orm.ibatis.SqlMapFactoryBean" > < property name= "configLocation" > < value > classpath:/sql-map-config.xml < / value > < / property > < / bean >

The sql-map-config.xml file is stored in the src directory.

The second kind of request:

< bean id= "sqlMap" class= "org.springframework.orm.ibatis.SqlMapFactoryBean" > < property name= "configLocation" > < value > WEB-INF/sqlmap-config.xml < / value > < / property > < / bean >

The sql-map-config.xml file is stored in the web-info directory.

Now that sqlmap is defined, you must write a configuration file for iBATIS.

< sql-map-config > < settings statementCacheSize= "0" driverHintsEnabled= "true" / > < sql-map resource= "com/longtop/bas/BasSql.xml" / > < / sql-map-config >

IBATIS configuration class 2, SqlMap object.

Objects generated by xml files are mainly read by SqlMapFactoryBean. There is only one SqlMap object (singleton object) in a project, and SqlMap is equivalent to all ibatis configuration files. Spring invokes SqlMapFactoryBean to generate a SqlMap object and injects the SqlMap object into each SqlDao object (inheriting SqlMapDaoSupport).

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