applicationContext.xml - Spring核心配置模板

「爱情、让人受尽委屈。」 2022-12-12 16:25 240阅读 0赞

<?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:context="http://www.springframework.org/schema/context" xmlns:mybatis="http://mybatis.org/schema/mybatis-spring" 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://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    
    
        
        <context:property-placeholder location="classpath*:db.properties" />
    
        
        <context:component-scan base-package="com.xgf"/>
    
        
        <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
            <property name="username" value="${jdbc.username}"/>
            <property name="password" value="${jdbc.password}"/>
            <property name="url" value="${jdbc.url}"/>
            <property name="driverClassName" value="${jdbc.driver}"/>
        </bean>
    
        
        
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        
        <mybatis:scan base-package="com.xgf.dao"/>
    
        
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"/>
        </bean>
        
        <tx:annotation-driven transaction-manager="transactionManager"/>
    </beans>

// 获取bean工具类 通过class获取bean（获取dao的bean)
    public class GetBeanUtils { 
    
        private static ApplicationContext applicationContext = null;
    
        //静态代码块 只加载一次
        static { 
            //加载配置文件
            applicationContext = new ClassPathXmlApplicationContext("com/xgf/config/applicationContext.xml");
        }
    
        public static <T> T getMapper(Class classFile) { 
           return (T) applicationContext.getBean(classFile);
        }
    }