01spring简介入门

官方网站
http://projects.spring.io/spring-framework/

http://projects.spring.io/spring-framework/

http://docs.spring.io/spring-framework/docs/current/spring-framework-reference/html/overview.html#overview-modules
在中间找到

jar文件下载 http://repo.spring.io/release/org/springframework/spring

http://repo.spring.io/release/org/springframework/spring/4.3.9.RELEASE/
../
spring-framework-4.3.9.RELEASE-dist.zip 07-Jun-2017 19:29 65.54 MB
spring-framework-4.3.9.RELEASE-dist.zip.md5 07-Jun-2017 19:29 32 bytes
spring-framework-4.3.9.RELEASE-dist.zip.sha1 07-Jun-2017 19:29 40 bytes
spring-framework-4.3.9.RELEASE-docs.zip 07-Jun-2017 19:29 33.78 MB
spring-framework-4.3.9.RELEASE-docs.zip.md5 07-Jun-2017 19:29 32 bytes
spring-framework-4.3.9.RELEASE-docs.zip.sha1 07-Jun-2017 19:29 40 bytes
spring-framework-4.3.9.RELEASE-schema.zip 07-Jun-2017 19:29 386.28 KB
spring-framework-4.3.9.RELEASE-schema.zip.md5 07-Jun-2017 19:29 32 bytes
spring-framework-4.3.9.RELEASE-schema.zip.sha1 07-Jun-2017 19:29 40 bytes

1、建立maven项目，打开pom.xml文件加入spring容器框架依赖
<!-- springframework dependency -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>

2、建立spring容器的配置文件
src/main/resources/applicationContext.xml
beans.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-4.3.xsd">

<!-- spring容器 默认使用的是单例模式 -->
<bean id="h" name="/hello" class="com.Hello" scope="singleton" />
<bean id="d" class="java.util.Date"/>
</beans>

3、编写测试代码
src/test/java/com.Demo.java

package com;
import com.fz.Hello;
import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.Date;
/**
* Created by webrx on 2017-07-01.
*/
public class Demo {
@Test
public void sp(){
//ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
BeanFactory factory = new ClassPathXmlApplicationContext("beans.xml");
Hello h1 = factory.getBean("h",Hello.class);
Hello h2 = factory.getBean("h",Hello.class);
Hello h3 = factory.getBean("h",Hello.class);
Hello h4 = factory.getBean("h",Hello.class);
System.out.println(h1==h2);
Date d = factory.getBean("d",Date.class);
System.out.println(d.toLocaleString());
}
}