<?xml version="1.0" encoding="utf-8"?> <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/xsd/maven-4.0.0.xsd"> <modelversion>4.0.0</modelversion> <groupid>com.abc</groupid> <artifactid>01-first(spring)</artifactid> <version>1.0-snapshot</version> <build> <plugins> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-compiler-plugin</artifactid> <configuration> <source>6</source> <target>6</target> </configuration> </plugin> </plugins> </build> <properties> <project.build.sourceencoding>utf-8</project.build.sourceencoding> <maven.compiler.source>10</maven.compiler.source> <maven.compiler.target>10</maven.compiler.target> <spring.version>5.1.0.release</spring.version> </properties> <dependencies> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-beans</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-core</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-expression</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-jcl</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>junit</groupid> <artifactid>junit</artifactid> <version>4.12</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <artifactid>maven-compiler-plugin</artifactid> <configuration> <source>1.10</source> <target>1.10</target> </configuration> </plugin> </plugins> </build> </project>
在java文件夹下新建package,在package包下新建接口及其实现类
接口:
public interface someservice { void dosome(); }
实现类:
public class someserviceimpl implements someservice { public someserviceimpl() { system.out.println("创建someserviceimpl对象"); } @override public void dosome() { system.out.println("执行someserviceimpl里的dosome()方法"); } }
applicationcontext.xml
文件spring使用的配置文件为xml文件,当然需要引入约束文件,一般将spring的配置文件命名为applicationcontext.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" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!--注册servcie其造价于如下代码: someserviceimpl someservice = new someserviceimpl(); 其底层是通过反射机制创建的someservice对象 object someservice = class.forname("com.abc.service.someserviceimpl").newinstance();--> <bean id="someservice" class="com.abc.service.someserviceimpl"/> </beans>
<bean id="someservice" class="com.abc.service.someserviceimpl"/>
package com.abc.service; import org.junit.test; import org.springframework.context.applicationcontext; import org.springframework.context.support.classpathxmlapplicationcontext; import org.springframework.context.support.filesystemxmlapplicationcontext; public class someserviceimplttest { // spring容器获取的两种方式 @test public void test01(){ //在类路径下加载spring配置文件 applicationcontext ac = new classpathxmlapplicationcontext("applicationcontext.xml"); //在当前目录的根下加载该配置文件,路径应为文件实际存放的目录 applicationcontext ac2 = new filesystemxmlapplicationcontext ("d:\\idea-workspace\\01-first(spring)\\src\\main\\resources\\applicationcontext.xml"); system.out.println(ac2); } @test public void test02() { // 加载spring配置文件,创建spring容器对象 applicationcontext ac = new classpathxmlapplicationcontext("applicationcontext.xml"); //调用spring容器的getbean方法获取carimpl,方法参数为bean的id someservice service = (someservice) ac.getbean("someservice"); service.dosome(); } }
spring入门程序到此就结束了
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