Spring3实例入门-Hello World
每次看到hello world,都有一种说不出的赶脚，想起了一个程序员，退休后写毛笔字，取笔研磨铺纸，大笔一挥，写下了“hello world”。 1.使用Maven生成项目结构 mvn archetype:generate -DgroupId=com.mkyong.core -DartifactId=Spring3Example -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false 2.转换成Eclipse项目 mvn eclipse:eclipse 3.添加Spring3.0 依赖 在pom.xml文件里添加Spring 3.0 依赖，然后依赖会从Maven中央仓库自动下载 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mkyong.core</groupId> <artifactId>Spring3Example</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <name>Spring3Example</name> <url>http://maven.apache.org</url> <properties> <spring.version>3.0.5.RELEASE</spring.version> </properties> <dependencies> <!-- Spring 3 dependencies --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> </dependencies> </project> 4.Spring bean 写个简单的bean package com.mkyong.core; /** * Spring bean * */ public class HelloWorld { private String name; public void setName(String name) { this.name = name; } public void printHello() { System.out.println("Spring 3 : Hello ! " + name); } } 5.Spring bean配置文件 创建一个配置文件，在里面声明所有可用的Spring beans <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-3.0.xsd"> <bean id="helloBean" class="com.mkyong.core.HelloWorld"> <property name="name" value="Mkyong" /> </bean> </beans> 6.最终的目录结构 7.运行 package com.mkyong.core; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class App { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext( "SpringBeans.xml"); HelloWorld obj = (HelloWorld) context.getBean("helloBean"); obj.printHello(); } } 8.输出 Spring 3 : Hello ! Mkyong 9.Demo下载 Spring3-hello-world-example.zip