在Spring的配置文件，有时候为了分模块的更加清晰的进行相关实体类的配置。
比如：现在有mybatis、tx事务、redis等 的配置
如果全放在applicationContext.xml中，会特别的长，不方便查看与修改
使用 import resource 标签
将每个模块的配置抽离：
applicationContext-tx.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 5、配置事务 使用的tx前缀的标签, 导入tx的命名空间--> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入DataSource --> <property name="dataSource" ref="dataSource"/> </bean> <!-- 事务的策略 --> <tx:advice id="txAdvice" transaction-manager="txManager"> <!-- 声明事务的规则 : 针对业务层的不同的方法,采用不同的规则--> <tx:attributes> <tx:method name="find*" read-only="true" propagation="SUPPORTS" /> <tx:method name="query*" read-only="true" propagation="SUPPORTS"/> <tx:method name="get*" read-only="true" propagation="SUPPORTS"/> <tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> <tx:method name="del*" propagation="REQUIRED" rollback-for="java.lang.Exception" timeout="2"/> <tx:method name="update*" propagation="REQUIRED" rollback-for="java.lang.Exception"/> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <!-- 事务的织入 --> <aop:config> <aop:pointcut expression="execution( * com.zl.housePlus.service..*.*(..) )" id="pointcut1"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut1"/> </aop:config> </beans>
applicationContext-redis.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!--redis哨兵 --> <bean id="redisSentinelConfiguration" class="org.springframework.data.redis.connection.RedisSentinelConfiguration"> <property name="master"> <bean class="org.springframework.data.redis.connection.RedisNode"> <property name="name" value="mymaster" /> </bean> </property> <!-- 哨兵 --> <property name="sentinels"> <set> <bean class="org.springframework.data.redis.connection.RedisNode"> <constructor-arg name="host" value="127.0.0.1" /> <constructor-arg name="port" value="10001" /> </bean> <bean class="org.springframework.data.redis.connection.RedisNode"> <constructor-arg name="host" value="127.0.0.1" /> <constructor-arg name="port" value="10002" /> </bean> <bean class="org.springframework.data.redis.connection.RedisNode"> <constructor-arg name="host" value="127.0.0.1" /> <constructor-arg name="port" value="10003" /> </bean> </set> </property> </bean> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"> <property name="poolConfig" ref="jedisPoolConfig"></property> <property name="hostName" value="${redis.host}"></property> <property name="port" value="${redis.port}"></property> <property name="password" value="${redis.password}" /> <!-- 哨兵 --> <constructor-arg name="sentinelConfig" ref="redisSentinelConfiguration" /> </bean> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="${redis.maxActive}" /><!-- 最大连接数 --> <property name="maxIdle" value="${redis.maxIdle}" /><!-- 最大闲置 --> <property name="minIdle" value="${redis.minIdle}" /><!-- 最小闲置 --> <property name="maxWaitMillis" value="${redis.maxWait}" /><!-- 最大等待 --> <property name="testOnBorrow" value="${redis.testOnBorrow}" /><!-- 可以获取 --> </bean> <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"> <property name="connectionFactory" ref="jedisConnectionFactory" /> <!-- 序列化方式 建议key/hashKey采用StringRedisSerializer --> <property name="keySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="valueSerializer"> <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" /> </property> <property name="hashKeySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="hashValueSerializer"> <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" /> </property> <!-- 开启REIDS事务支持 --> <property name="enableTransactionSupport" value="false" /> </bean> <bean id="redisHttpSessionConfiguration" class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration"> <!-- 设置session存活时间 --> <property name="maxInactiveIntervalInSeconds" value="300000"></property> </bean> <!-- 对string操作的封装 --> <!-- <bean id="stringRedisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate"> <constructor-arg ref="jedisConnectionFactory" /> 开启REIDS事务支持 <property name="enableTransactionSupport" value="false" /> </bean> --> </beans>
applicationContext-mybatis.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 2、配置一个数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 配置相应的数据 --> <property name="driverClass" value="${jdbc.driverClassName}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <property name="acquireIncrement" value="${jdbc.acquireIncrement}"/> <property name="initialPoolSize" value="${jdbc.initialPoolSize}"/> <property name="maxPoolSize" value="${jdbc.maxPoolSize}"/> <property name="minPoolSize" value="${jdbc.minPoolSize}"/> </bean> <!-- 3、创建一个SqlSessionFactorybean ,用于产生SessionFactory , 需要注入数据源--> <bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> <property name="mapperLocations" value="classpath*:mapper/*Mapper.xml"/> <property name="typeAliasesPackage" value="com.zl.houseplus.entity"/> <!-- 添加全局配置 --> <property name="globalConfig" ref="globalConfig" /> <!-- 配置分页插件 --> <property name="plugins"> <array> <bean class="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor"> <!-- <property name="sqlParser" ref="自定义解析类、可以没有" /> <property name="dialectClazz" value="自定义方言类、可以没有" /> COUNT SQL 解析.可以没有--> <property name="countSqlParser" ref="countSqlParser" /> </bean> </array> </property> </bean> <bean id="countSqlParser" class="com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize"> <!-- 设置为 true 可以优化部分 left join 的sql --> <property name="optimizeJoin" value="true"/> </bean> <!-- 4、mapper扫描器：通过mapper代理，创建mapper代理对象，保存到spring容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.zl.housePlus.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!-- 序列生成策略 --> <bean id="globalConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig"> <property name="dbConfig" ref="dbConfig" /> </bean> <bean id="dbConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig.DbConfig"> <property name="keyGenerator" ref="keyGenerator" /> </bean> <bean id="keyGenerator" class="com.baomidou.mybatisplus.extension.incrementer.OracleKeyGenerator" /> </beans>
最后的主 applicationContext.xml中只需要引入即可
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 加载db.properties 文件--> <context:property-placeholder location="classpath:db.properties,classpath:redis.properties"
file-encoding="UTF-8"/> <!-- 扫描其他类中的注解 --> <context:component-scan base-package="com.zl.housePlus"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- 加载其他配置文件 --> <import resource="applicationContext-tx.xml"/> <import resource="applicationContext-mybatis.xml"/> <import resource="applicationContext-redis.xml"/> </beans>
其他类中加载配置文件只需要加载applicationContext.xml即可（比如测试类）
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration("classpath:applicationContext.xml") @SuppressWarnings({ "rawtypes", "unchecked" }) public class JedisTest { 。。。