spring 框架的xml文件如何读取properties文件数据

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第一步：在spring配置文件中

注意：value可以多配置几个properties文件

<bean id="propertyConfigurer"

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<propertyname="locations">

<list>

<value>/db.properties</value>

</list>

</property>

</bean>

第二步：

在src目录下面建立db.properties文件

user=sa

password=sa

driver=com.microsoft.sqlserver.jdbc.SQLServerDriver

url=jdbc:sqlserver://localhost:1433;databaseName=DB1

第三步：

在spring的配置文件中通过EL表达式的形式调用

${user}

<?xml version="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<beanid="propertyConfigurer"

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<propertyname="locations">

<list>

<value>/db.properties</value>

</list>

</property>

</bean>

<beanid="datasource"

class="org.springframework.jdbc.datasource.DriverManagerDataSource">

<propertyname="driverClassName"

value="${driver}">

</property>

<property name="url"

value="${url}">

</property>

</bean>

<beanid="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<propertyname="dataSource">

<refbean="datasource" />

</property>

<propertyname="hibernateProperties">

<props>

<propkey="hibernate.dialect">

org.hibernate.dialect.SQLServerDialect

</prop>

</props>

</property>

<propertyname="mappingResources">

<list>

<value>entity/Users.hbm.xml</value>

</list>

</property>

</bean>

<beanid="UsersDAO" class="dao.UsersDAO">

<propertyname="sessionFactory">

<refbean="sessionFactory" />

</property>

</bean>

</beans>