用MyEclipse开发Spring入门

编写Spring开发指南中的第一个例子,这个用例子实现了大小写的转换！

1 新建一个项目

File----->New ----->Project 在出现的对话框中选择 MyEclipse 下的 Web Project，在Project Name 输入mySpring1，其他的选项默认，再点Finish完成；

2 加入Spring 包

在myspring1 项目上点右键，选MyEclipse ---> Add Spring Capabities，再点Finish完成；

3 加入Log4j 包

菜单--->Project -->Properties-----Java Build Path 点Libraries 选项卡，再选Add External Jars 加入log4j 的jar 包 (可从网上下)

4 新建Action接口文件

右键点src ---->New ---->Interface (包名net.xiaxin.spring.qs)

Action.java代码

package net.xiaxin.spring.qs;

public interface Action { public String execute(String str);

} 5 建立Action接口的两个实现UpperAction、LowerAction

LowerAction.java

package net.xiaxin.spring.qs;

public class LowerAction implements Action { private String message; public String getMessage() { return message; } public void setMessage(String string) { message = string; } public String execute(String str) { return (getMessage()+str).toLowerCase(); } }

/ UpperAction.java

package net.xiaxin.spring.qs;

public class UpperAction implements Action { private String message; public String getMessage() { return message; } public void setMessage(String string) { message = string; } public String execute(String str) { return (getMessage() + str).toUpperCase(); } }

6 新建log4j.properties配置文件，内容如下：

log4j.rootLogger=DEBUG, stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%c{1} - %m%n

7 Spring配置文件（bean.xml）

在myspring 上右击 --->New--->File 文件名 bean.xml

bean.xml 内容如下

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" ""> <beans> <description>Spring Quick Start</description> <bean id="TheAction" class="net.xiaxin.spring.qs.UpperAction"> <property name="message"> <value>HeLLo</value> </property> </bean> <bean id="action2" class="net.xiaxin.spring.qs.LowerAction"> <property name="message"> <value>HeLLo</value> </property> </bean> </beans>

8 建立测试文件SimpleTest.java

package test;

import net.xiaxin.spring.qs.Action;

import org.springframework.context.ApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext;

public class SimpleTest { public static void main(String args[]) { SimpleTest test=new SimpleTest(); test.testQuickStart(); } public void testQuickStart() { ApplicationContext ctx=new FileSystemXmlApplicationContext("bean.xml"); Action action = (Action) ctx.getBean("TheAction"); System.out.println(action.execute("Rod Johnson")); action = (Action) ctx.getBean("action2"); System.out.println(action.execute("jecKj")); }

}

9 把SimpleTeat.java 设置成主类就可以运行了，运行结果 (红色部分是想要的结果)

FileSystemXmlApplicationContext - Publishing event in context [org.springframework.context.support.FileSystemXmlApplicationContext;hashCode=12694833]: org.springframework.context.event.ContextRefreshedEvent[source=org.springframework.context.support.FileSystemXmlApplicationContext: display name [org.springframework.context.support.FileSystemXmlApplicationContext;hashCode=12694833]; startup date [Wed May 31 13:30:25 CST 2006]; root of context hierarchy] DefaultListableBeanFactory - Returning cached instance of singleton bean TheAction HELLOROD JOHNSON DefaultListableBeanFactory - Returning cached instance of singleton bean action2 hellojeckj