spring框架的搭建的初步认识

本文主要初步介绍spring框架的搭建和认识

首先,引入spring.jar和commons-logging.jar两个包,然后创建applicationContext.xml文件,其内容如下:

<?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"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><bean id="userService" class="com.service.UserService"><property name="name"><value>siege</value></property><property name="byeService" ref="byeService"></property></bean><bean id="byeService" class="com.service.ByeService"><property name="name"><value>xuhaiyue</value></property></bean></beans>

然后编写测试类:

先创建获取ApplicationContext对象的公共方法:

package com.util;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public final class ApplicationContextUtil {private static ApplicationContext ac=null;ApplicationContextUtil(){}static {ac=new ClassPathXmlApplicationContext("applicationContext.xml");}public static ApplicationContext getApplicationContext(){return ac;}}

然后编写ByeService.java文件

package com.service;public class ByeService {private String name;public void sayBye(){System.out.println("bye,"+name);}public String getName() {return name;}public void setName(String name) {this.name = name;}}

接着编写UserService.java文件

package com.service;public class UserService {private String name;private ByeService byeService;public void hello(){System.out.println(name+",hello");byeService.sayBye();}public ByeService getByeService() {return byeService;}public void setByeService(ByeService byeService) {this.byeService = byeService;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

最后编写测试类:

package com.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.service.ByeService;import com.service.UserService;import com.util.ApplicationContextUtil;public class Test {public static void main(String[] args) {/*ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");UserService us=(UserService) ac.getBean("userService");us.hello();ByeService bs=(ByeService) ac.getBean("byeService");bs.sayBye();*/UserService us=(UserService) ApplicationContextUtil.getApplicationContext().getBean("userService");us.hello();}}

总结: