spring开发_spring环境搭建-白红宇

spring开发_spring环境搭建

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发布时间：2019-06-28

本文共 2857 字，大约阅读时间需要 9 分钟。

项目结构

这里需要设置环境：

添加如下jar包

commons-logging.jar

spring.jar

/spring_0001_搭建spring环境/src/com/b510/service/PersonService.java

1 package com.b510.service;  2 /**  3  *  4  * @author Hongten  5  * 这是一个Service层的接口  6  *  7  */  8 public interface PersonService {
    9 10     public abstract void save(); 11 12 }

/spring_0001_搭建spring环境/src/com/b510/service/impl/PersonServiceBean.java

1 package com.b510.service.impl;  2  3 import com.b510.service.PersonService;  4 /**  5  *  6  * @author Hongten  7  *    实现PersonService接口  8  */  9 public class PersonServiceBean implements PersonService {
   10     /* (non-Javadoc) 11      * @see com.b510.service.impl.PersonService#save() 12 */ 13     public void save() {
   14         System.out.println("i'm hongten,这是save()方法"); 15     } 16 }

beans.xml

/spring_0001_搭建spring环境/src/junit/test/SpringTest.java

package junit.test; import org.junit.BeforeClass; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.b510.service.PersonService; /**  *  * @author Hongten  *    测试类 */ public class SpringTest {
       @BeforeClass public static void setUpBeforeClass() throws Exception {
       } /**      * spring容器实例化 */ public void instanceSpring(){
           ApplicationContext ctx=new ClassPathXmlApplicationContext(new String[]{"beans.xml"}); //取出bean         PersonService personService=(PersonService) ctx.getBean("personServiceImpl"); //调用bean的方法save()         personService.save();     } public static void main(String[] args) {
   new SpringTest().instanceSpring();     } }

ApplicationContext实例是Spring的核心，它既是一个巨大的工厂，也是一个功能强大的工厂，spring框架的绝大部分功能

都是通过该容器实现的。

运行结果

2012-3-5 20:19:05 org.springframework.context.support.AbstractApplicationContext prepareRefresh 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9: display name [org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9]; startup date [Mon Mar 05 20:19:05 CST 2012]; root of context hierarchy 2012-3-5 20:19:05 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions 信息: Loading XML bean definitions from class path resource [beans.xml] 2012-3-5 20:19:05 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory 信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9]: org.springframework.beans.factory.support.DefaultListableBeanFactory@16a786 2012-3-5 20:19:05 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons 信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@16a786: defining beans [personServiceImpl]; root of factory hierarchy i'm hongten,这是save()方法