Spring开发环境搭建以及创建示例工程

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一、环境搭建

Spring开发包的下载位置http://repo.spring.io/release/org/springframework/spring/

二、创建示例工程

1、建立Java Project工程

File-> new other->Java->Java Project 工程名为 Test

在工程文件下新建lib文件夹，将spring-framework压缩包中的libs文件夹中的jar文件拷贝到工程文件中的lib文件中，点击刷新

为了在工程中使用上述Jar文件，需要添加到Build Path中

右键Propertries选择 Java Build Path,点击Libraries 下的Add JARs 选择Test工程下的lib中的所有jar文件

点击OK

完成后的工程目录

2、编写Java文件

a.新建Java Interface

在IHelloMessage中创建方法

package com.cc.test;public interface IHelloMessage {    public String sayHello();}

b.创建接口实现类HelloWorld, 接口实现类，向用户输出“Hello everybody”信息

package com.cc.test;public class HelloWorld implements IHelloMessage {@Overridepublic String sayHello() {// TODO Auto-generated method stubreturn "Hello World!";}}

c.创建HelloChina实现类

package com.cc.test;public class HelloChina implements IHelloMessage {@Overridepublic String sayHello() {// TODO Auto-generated method stubreturn "大家好";}}

d.创建Person类,调用IHelloMessage接口，向用户输出问候信息

在Person类中引用IHelloMessage类，并为helloMessage创建get和set方法，右键helloMessage

选择Source->Generate Getters and Setters

选择Select All 点击OK

public class Person {private IHelloMessage helloMessage;public IHelloMessage getHelloMessage() {return helloMessage;}public void setHelloMessage(IHelloMessage helloMessage) {this.helloMessage = helloMessage;}public String sayHello() {return this.helloMessage.sayHello();}}

e.创建Main程序入口，用于加载配置文件，以及IOC容器，调用人物类，向用户输出问候信息

在创建类时需要选择public static void main(String [] args)方法

package com.cc.test;import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.xml.XmlBeanFactory;import org.springframework.core.io.FileSystemResource;import org.springframework.core.io.Resource;public class Main {public static void main(String[] args) {// TODO Auto-generated method stubResource resource = new FileSystemResource("helloMessage.xml"); // 用于读取配置文件BeanFactory factory = new XmlBeanFactory(resource); // 用于加载配置文件Person  person=(Person)factory.getBean("person");                                        String string=person.sayHello();System.out.println(string);}}

3、编写配置文件

a.新建配置文件helloMessage.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE beans PUBLIC "-//SPRING/DTD BEAN/EN""http://www.springframework.org/dtd/spring-bin.dtd"><beans><bean id ="helloWorld" class="com.cc.test.HelloWorld"></bean><bean id="helloChina"  class="com.cc.test.HelloChina"></bean><bean id="person"      class="com.cc.test.Person"><property name="helloMessage" ref="helloChina"></property></bean></beans>

4、运行事例工程

出现错误

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.<init>(DefaultSingletonBeanRegistry.java:83)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.<init>(FactoryBeanRegistrySupport.java:43)
at org.springframework.beans.factory.support.AbstractBeanFactory.<init>(AbstractBeanFactory.java:178)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:160)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:171)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.<init>(DefaultListableBeanFactory.java:193)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:78)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:67)
at com.cc.test.Main.main(Main.java:13)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 9 more

是因为缺少缺少 commons-logging.jar

下载地址 http://download.csdn.net/detail/lrici/9743894

运行结果

修改helloMessage文件

运行结果

源码地址http://download.csdn.net/detail/lrici/9743891

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