pom.xml <?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.geyao</groupId> <artifactId>spring01geyao</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.13.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>3.2.0.RELEASE</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.3.4.RELEASE</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.3.4.RELEASE</version> <scope>test</scope> </dependency> </dependencies> </project>log4j.properties ### 设置### log4j.rootLogger = ERROR,stdout ### 输出信息到控制抬 ### log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout = org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n log4j.category.org.springframework.beans.factory=ERRORapplicationContext.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" 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"> <!-- bean元素:描述当前的对象需要由spring容器管理 id属性:标识对象 未来在应用程序中可以根据id获取对象 class对象:被管理的对象的全名 --> <context:component-scan base-package="com.geyao.demo"></context:component-scan> <bean id="notepad" class="com.geyao.demo.NotePad" scope="singleton"/> </beans>notepad类 package com.geyao.demo; public class NotePad { public NotePad() { super(); System.out.println("NotePad的构造函数"+this.toString()); } }notepad2类 package com.geyao.demo; import org.springframework.beans.factory.config.ConfigurableBeanFactory; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; @Component //@Scope("prototype") //@Scope(scopeName = "prototype") @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE) public class Notepad2 { public Notepad2() { super(); System.out.println("NotePad的构造函数"+this.toString()); } }Notepadtest类 package com.geyao.demo; import org.junit.Test; import org.springframework.context.support.ClassPathXmlApplicationContext; //无论我们是否去主动获取对象,spring上下文刚加载就会创建对象 //无论获取多少次,都是统一对象 // public class NotepadTest { @Test public void test01(){ ClassPathXmlApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml"); NotePad notePad1= (NotePad)context.getBean("notepad"); NotePad notePad2= (NotePad)context.getBean("notepad"); System.out.println(notePad1=notePad2); } }notepadtestAuto类 package com.geyao.demo; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration("classpath:applicationContext.xml") public class NotePadTestAuto { @Autowired private NotePad notePad1; @Autowired private NotePad notePad2; @Test public void test01(){ System.out.println(notePad1==notePad2); } }notepadtestt类 package com.geyao.demo; import org.springframework.beans.factory.config.ConfigurableBeanFactory; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; @Component //@Scope("prototype") //@Scope(scopeName = "prototype") @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE) public class Notepad2 { public Notepad2() { super(); System.out.println("NotePad的构造函数"+this.toString()); } }运行结果 NotePad的构造函数com.geyao.demo.NotePad@117159c0 NotePad的构造函数com.geyao.demo.Notepad2@3cce5371 NotePad的构造函数com.geyao.demo.Notepad2@480d3575 false