Spring_入门程序

1.新建web项目(结构如下)

2.导入jar包

3.导入日志配置

# Global logging configuration
log4j.rootLogger=info, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

3.新建spring配置文件

<?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-4.2.xsd ">
		<!-- bean:使容器创建Person对象 -->
		<!-- name:相当于 Person  person=new Person(); -->
		<!-- class:类的位置 -->
		<bean name="person" class="com.linxin.spring.pojo.Person"></bean>
		
</beans>

4.新建Person类

package com.linxin.spring.pojo;

public class Person {
	private String name;
	private Integer age;
	public Person() {
		super();
		System.out.println("构造器被调用");
	}
	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;
	}
	@Override
	public String toString() {
		return "Person [name=" + name + ", age=" + age + "]";
	}
	
}

5.新建测试类

package com.linxin.spring.pojo;

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

public class IOCTest {
	@SuppressWarnings("resource")		//注解主要用在取消一些编译器产生的警告
	@Test								//测试注解
	public void testCreatePerson() {
		//创建容器
		ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
		//查找对象
		Person  p= (Person) applicationContext.getBean("person");
		System.out.println(p);
	}

}

6.测试结果