spring 实现测试解耦

第一步：新建maven 项目  FirstSpringJAVA

第二步：导入spring对应的jar包

pom.xml

<dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.1.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.3.1.RELEASE</version> <type>jar</type> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.1.RELEASE</version> <type>jar</type> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>4.3.1.RELEASE</version> <type>jar</type> </dependency>

第三步：声明接口

People.java

package com.xuzhiwen.spring2; public interface People { public abstract void eat(); }

第四步：新建两个接口实现类

Man.java

package com.xuzhiwen.spring2; public class Man implements People{ @Override public void eat() { System.out.println("man eat()..."); } }

Woman.java

package com.xuzhiwen.spring2; public class Woman implements People{ @Override public void eat() { System.out.println("Woman eat()..."); } }

第五步：新建工厂类

SpringFactory.java

package com.xuzhiwen.spring2; public class SpringFactory { public People people; public void setPeople(People people) { this.people = people; } public People getPeople() { return people; } }

 

第六步： 新建spring配置文件

applicationContext.xml

<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-3.0.xsd"> <bean id="springFactory" class="com.xuzhiwen.spring2.SpringFactory"> <property name="people" ref="woman" /> </bean> <bean id="man" class="com.xuzhiwen.spring2.Man" /> <bean id="woman" class="com.xuzhiwen.spring2.Woman" /> </beans>

第七步：编写测试类

TestSpringFactory.java

package com.xuzhiwen.spring2; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestSpringFactory { public static void main(String[] args) { ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml"); SpringFactory people = (SpringFactory) app.getBean("springFactory"); people.getPeople().eat(); } }

第八步：运行结果如下

第九步：这样就可以通过直接修改配置文件来实现解耦

<property name="people" ref="woman" />

 

转载于:https://www.cnblogs.com/beibidewomen/p/7382699.html