Mybatis的sqlSessionTemplate直接使用
本文的持久化操作使用的是mybatis的sqlSessionTemplate，可用
除了mapper.xml中的sql语句 还可以用这个提供好的类来操作数据库
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SqlSession sqlSession= sqlSessionTemplate.getSqlSessionFactory().openSession(ExecutorType.BATCH,
false);
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//增
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int result = sqlSession.insert(
"userMapper.insertUsers",user);
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//删
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int result = sqlSession.delete(
"userMapper.deleteUsers",
49);
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//改
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int result = sqlSession.update(
"userMapper.updateUsers",user);
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//查
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List
list = sqlSession.selectList(
"userMapper.queryUsers");
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User user = sqlSession.selectOne(
"userMapper.queryUserById",
2);
把一个User对象写入数据库，相当于之前一直使用的parameterType="User"，它不需要使用dao层，而直接用sqlSessionTemplate去使用mapper.xml里具体的持久化方法。它在spring-mybatis.xml中的配置为：
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"1.0" encoding=
"UTF-8"?>
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"http://www.springframework.org/schema/beans"
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xmlns:xsi=
"http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context=
"http://www.springframework.org/schema/context"
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xmlns:tx=
"http://www.springframework.org/schema/tx"
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xsi:schemaLocation=
"
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-3.0.xsd
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http://www.springframework.org/schema/tx
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http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
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">
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class=
"org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
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"ignoreUnresolvablePlaceholders" value=
"true"/>
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"order" value=
"1"/>
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"locations">
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classpath:oracle.properties
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package=
"cn.richinfo.**" />
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"dataSource"
class=
"org.apache.commons.dbcp.BasicDataSource" destroy-method=
"close">
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"driverClassName" value=
"oracle.jdbc.OracleDriver"/>
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"url" value=
"${oracle.datasource.url}" />
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"username" value=
"${oracle.datasource.username}" />
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"password" value=
"${oracle.datasource.password}" />
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"maxActive" value=
"${oracle.datasource.maxActive}"/>
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"maxIdle" value=
"${oracle.datasource.maxIdle}"/>
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"maxWait" value=
"${oracle.datasource.maxWait}"/>
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"logAbandoned" value=
"${oracle.datasource.logAbandoned}"/>
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"removeAbandoned" value=
"${oracle.datasource.removeAbandoned}"/>
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"removeAbandonedTimeout" value=
"${oracle.datasource.removeAbandonedTimeout}"/>
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"validationQuery" value=
"select 1 from dual" />
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-
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"transactionManager"
class=
"org.springframework.jdbc.datasource.DataSourceTransactionManager">
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"dataSource" ref=
"dataSource"/>
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"transactionManager" />
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"sqlSessionFactory"
class=
"org.mybatis.spring.SqlSessionFactoryBean">
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"dataSource" ref=
"dataSource"/>
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"mapperLocations" value=
"classpath:cn/richinfo/mapper/*.xml"/>
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-
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"sqlSessionTemplate"
class=
"org.mybatis.spring.SqlSessionTemplate" scope=
"prototype">
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"0" ref=
"sqlSessionFactory"/>
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并且在applicationContent.xml中导入
<import resource="classpath*:spring-mybatis.xml" />
mqpper.xml中的写法与spring结合mybatis一直使用的那一套一致。这里要注意的是:
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namespace=
"userMapper">
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"insertUser" parameterType=
"cn.data.User">
如上例，在使用中要用"mapperName.methodName"