从零开始搭建Spring项目

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1、导入Spring框架所需的jar包（maven方式）

     <!--普通java项目-->
<dependency>
	<groupId>org.springframework</groupId>
	<artifactId>spring-context</artifactId>
	<version>3.2.17.RELEASE</version>
</dependency>
      <!--web项目-->
<dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc</artifactId>
   <version>3.2.17.RELEASE</version>
</dependency>

 2、创建pojo

package com.bdqn.pojo;

public class User {
	private Integer id; // id
	private String userCode; // 用户编码
	private String userName; // 用户名称
	private String userPassword; // 用户密码
	private Integer gender; // 性别
	
        //......省略部分代码

}

3、编写Spring配置文件 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"
    xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
        
        <beans>
        	<bean id="user" class="com.bdqn.pojo.User">
        		<property name="userName">
        			<value>张三</value>
        		</property>
        	</bean>
        </beans>
        
</beans>

 4、测试

package com.bdqn.test;

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

import com.bdqn.pojo.User;

public class UserTest {
	
	@Test
	public void eg1(){
		 //1.创建容器对象，相对于src下的路径
		  ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		  //2.向容器“要”user对象
		  User u=(User) ac.getBean("user");
		  //3.打印user对象
		  System.out.println("大家好，我的名字是："+u.getUserName());
	}
	 
}