Spring配置一个简单的实例

准备工作:
(1)下载spring最新版本
下载后的压缩包为spring-3.2.0.M2-dist.zip,为spring3.2版本.
(2)下载commons-logging-1.1.1.jar文件,spring依赖这个jar,否则运行异常。
地址:http://commons.apache.org/logging/download_logging.cgi
下载后解压缩commons-logging-1.1.1-bin.zip,里面有需要的包。

1、新建一个java项目,导入spring需要的包

经过测试spring运行ioc最少导入以下4个包:
spring-core-3.2.0.M2.jar
spring-context-3.2.0.M2.jar
spring-beans-3.2.0.M2.jar
spring-expression-3.2.0.M2.jar
然后导入
commons-logging-1.1.1.jar

(导入包的过程:右键项目-build path-add libraries-user libraries-user libraries-new新建一个jar库-add external添加jar

2、pojo(及javabean文件)Student.java

package com.ru.domain;

public class Student {
	private Integer id;
	private String name;
	private Integer age;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	
	
}

3、spring的配置文件:bean.xml

注:spring的配置文件样板可以在官方文档中查看,5.1. Introduction to the Spring IoC container and beans文档的第5章就是

配置了student,并且为student的属性赋了值

<?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-3.0.xsd">

  <bean id="student" class="com.ru.domain.Student">
    <!-- collaborators and configuration for this bean go here -->
    <property name="id" value="1"/>
    <property name="name" value="如神"/>
    <property name="age" value="23"/>
  </bean>
</beans>

4、测试test.java

package com.ru.service;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ru.domain.Student;

public class Test1 {
	@Test
	public void test1(){
		//ApplicationContext获取的是spring的beanFactory,从这里可以得到bean
		//加入beans.xml不再src目录下:new ClassPathXmlApplicationContext("com/ru/domain/beans.xml");
		ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");
		Student stu=(Student)ac.getBean("student");
		System.out.println("学生信息:");
		System.out.println("学号:"+stu.getId()+"姓名:"+stu.getName()+"年龄:"+stu.getAge());
	}
}



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转载自tydldd.iteye.com/blog/1720157