spring 5.0 引用外部文件 03

maven的pom文件

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.ruge</groupId>  <artifactId>spring</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>spring Maven Webapp</name>  <url>http://maven.apache.org</url>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->    <dependency>      <groupId>commons-logging</groupId>      <artifactId>commons-logging</artifactId>      <version>1.2</version>    </dependency>   <!--这个jar文件是所有应用都要用到的，它包含访问配置文件、创建和管理bean以及进行   Inversion of Control / Dependency Injection（IoC/DI）操作相关的所有类。如果应用只需基本的IoC/DI支持，   引入spring-core.jar及spring-beans.jar文件就可以了。-->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-beans</artifactId>      <version>5.0.0.RELEASE</version>    </dependency>    <!--这个jar文件为Spring核心提供了大量扩展。可以找到使用Spring ApplicationContext特性时所需的全部类，    JDNI所需的全部类，UI方面的用来与模板（Templating）引擎如Velocity、FreeMarker、JasperReports集成的类，    以及校验Validation方面的相关类。 -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>5.0.0.RELEASE</version>    </dependency>    <!--这个jar文件包含Spring框架基本的核心工具类，Spring其它组件要都要使用到这个包里的类，是其它组件的基本核心-->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>5.0.0.RELEASE</version>    </dependency>    <!-- Spring Expression Language(SpEL) -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-expression</artifactId>      <version>5.0.0.RELEASE</version>    </dependency>    <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->    <dependency>      <groupId>com.mchange</groupId>      <artifactId>c3p0</artifactId>      <version>0.9.5.2</version>    </dependency>    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>6.0.6</version>    </dependency>  </dependencies>  <build>    <finalName>spring</finalName>  </build></project>

spring的配置文件

<?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"       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">   <!--引用外部属性文件-->    <context:property-placeholder location="configinfo.properties"></context:property-placeholder>    <!-- 配置需要被Spring管理的Bean（创建，创建后放在了Spring IOC容器里面）-->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <!-- 配置该Bean需要注入的属性（是通过属性set方法来注入的） -->       <property name="user" value="${user}"></property>        <property name="password" value="${password}"></property>        <property name="driverClass" value="${driverClass}"></property>        <property name="jdbcUrl" value="${jdbcUrl}"></property>    </bean></beans>

configinfo.properties

user:rootpassword:rootdriverClass:com.mysql.jdbc.DriverjdbcUrl:jdbc:mysql://localhost:3306/ruge?characterEncoding=utf8&useSSL=true

测试类

package com.ruge.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import javax.sql.DataSource;import java.sql.SQLException;/** * 描述: * main测试类 * * @outhor 爱丽丝、如歌 * @create 2017-11-01 20:52 */public class test {    public static void main(String[] args) throws SQLException {        //获取Spring的ApplicationContext配置文件，注入IOC容器中       ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");        DataSource dataSource = (DataSource) applicationContext.getBean("dataSource");        System.out.println(dataSource.getClass());    }}

效果展示

D:\download\tool\jdk\jdk8_64\install\bin\java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:52584,suspend=y,server=n -Dfile.encoding=UTF-8 -classpath D:\download\tool\jdk\jdk8_64\install\jre\lib\charsets.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\deploy.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\access-bridge-64.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\cldrdata.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\dnsns.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\jaccess.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\jfxrt.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\localedata.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\nashorn.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\sunec.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\sunjce_provider.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\sunmscapi.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\sunpkcs11.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\ext\zipfs.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\javaws.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\jce.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\jfr.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\jfxswt.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\jsse.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\management-agent.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\plugin.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\resources.jar;D:\download\tool\jdk\jdk8_64\install\jre\lib\rt.jar;D:\project_idea\spring\target\classes;D:\download\tool\versionControl\maven\localRepository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-beans\5.0.0.RELEASE\spring-beans-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-context\5.0.0.RELEASE\spring-context-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-aop\5.0.0.RELEASE\spring-aop-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-core\5.0.0.RELEASE\spring-core-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-jcl\5.0.0.RELEASE\spring-jcl-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\org\springframework\spring-expression\5.0.0.RELEASE\spring-expression-5.0.0.RELEASE.jar;D:\download\tool\versionControl\maven\localRepository\com\mchange\c3p0\0.9.5.2\c3p0-0.9.5.2.jar;D:\download\tool\versionControl\maven\localRepository\com\mchange\mchange-commons-java\0.2.11\mchange-commons-java-0.2.11.jar;D:\download\tool\versionControl\maven\localRepository\mysql\mysql-connector-java\6.0.6\mysql-connector-java-6.0.6.jar;D:\download\tool\ide\idea\2016\ideaIU-2016\install\lib\idea_rt.jar com.ruge.test.testConnected to the target VM, address: '127.0.0.1:52584', transport: 'socket'十一月 04, 2017 12:23:18 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@18be83e4: startup date [Sat Nov 04 12:23:18 CST 2017]; root of context hierarchy十一月 04, 2017 12:23:18 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions信息: Loading XML bean definitions from class path resource [applicationContext.xml]十一月 04, 2017 12:23:19 下午 com.mchange.v2.log.MLog 信息: MLog clients using java 1.4+ standard logging.十一月 04, 2017 12:23:19 下午 com.mchange.v2.c3p0.C3P0Registry 信息: Initializing c3p0-0.9.5.2 [built 08-December-2015 22:06:04 -0800; debug? true; trace: 10]class com.mchange.v2.c3p0.ComboPooledDataSourceDisconnected from the target VM, address: '127.0.0.1:52584', transport: 'socket'Process finished with exit code 0

目录结构