Spring3.0_构建Spring开发环境的小示例

一、添加Spring的jar支持包

二、添加Spring的核心文件 applicationContext.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.xsd">

<bean id="HelloWorld" class="com.demo.spring.HelloWorld">
    <property name="message"><value>world</value></property>
</bean>
</beans>

三、添加日志配置文件：log4j.properties

## LOGGERS ##
#define a logger 
#log4j.rootLogger=DEBUG,console,file
 log4j.rootLogger=INFO,console,file

## APPENDERS ##
# define an appender named console, which is set to be a ConsoleAppender
log4j.appender.console=org.apache.log4j.ConsoleAppender

# define an appender named file, which is set to be a RollingFileAppender
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=d:/demo_log.txt

#set the log's size
log4j.appender.file.MaxFileSize=1000KB
log4j.appender.file.MaxBackupIndex=20

## LAYOUTS ##
# assign a SimpleLayout to console appender
log4j.appender.console.layout=org.apache.log4j.SimpleLayout

# assign a PatternLayout to file appender
log4j.appender.file.layout=org.apache.log4j.PatternLayout
# For debug
# log4j.appender.file.layout.ConversionPattern=[%-5p][%t][%C][%d{yyyy-MM-dd HH:mm:ss}] %m%n
# For deployment
log4j.appender.file.layout.ConversionPattern=[%-5p][%d{yyyy-MM-dd HH:mm:ss}] %m%n

项目的目录

com.demo.spring.HelloWorld的代码：

package com.demo.spring;

public class HelloWorld {
    protected String message;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
    public String excute(){
        return "Hello"+getMessage();
    }
}

com.demo.test.Test的代码：

package com.demo.test;

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

import com.demo.spring.HelloWorld;

public class Test {
    public static void main(String args[]){
        ApplicationContext ctx=new FileSystemXmlApplicationContext(
                "WebContent/WEB-INF/applicationContext.xml");
        HelloWorld hello=(HelloWorld) ctx.getBean("HelloWorld");
        System.out.println(hello.excute());
    }
}

输出结果如下：

INFO - Refreshing org.springframework.context.support.FileSystemXmlApplicationContext@4b222f: startup date [Tue Jul 12 00:01:34 CST 2011]; root of context hierarchy
INFO - Loading XML bean definitions from file [D:\My Documents\eclipse workspace\test\WebContent\WEB-INF\applicationContext.xml]
INFO - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1c9b9ca: defining beans [HelloWorld]; root of factory hierarchy
Helloworld

出现Helloworld字样说明Spring的支持环境已经构建完毕。

附：源码下载http://u.115.com/file/bh56mqty