Spring：xml方式实现spring和配置log4j.properties

xml方式实现spring和配置log4j.properties

配置log4j.properties

# Root logger option
log4j.rootLogger=INFO, stdout

# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
#log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

log4j.category.org.springframework.beans.factory=DEBUG

package com.wuzl;


/**
 * 消息服务，打印输出
 */

public class MessageServices {
    public MessageServices() {
        super();
        System.out.println("MessageService...");
    }

    /**
     * 执行打印功能
     * @return 返回打印字符
     */

    public String getMessage(){
        return "hello word!";
    }
}

package com.wuzl;

/**
 * 打印机
 */

public class MessagePrint {

    public MessagePrint() {
        super();
        System.out.println("MessagePrint...");
    }

    /**
     * 建立和MessageService的关联关系
     */
    private MessageServices service;

    /**
     * 设置service的值
     * @param service
     */

    public void setService(MessageServices service) {
        this.service = service;
    }

    public void printMessage(){
        System.out.println(this.service.getMessage());

    }
}

package com.wuzl;

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

/**
 * 使用spring创建对象
 */
public class ApplicationSpring {
    public static void main(String[] args) {
        System.out.println("Spring打印");

        //初始化spring容器,使用xml的方式
        ApplicationContext context=new ClassPathXmlApplicationContext( "applicationContext.xml");
        //从容器中获取MessagePrint对象
        MessagePrint print=context.getBean(MessagePrint.class);

        print.printMessage();

    }
}

xml方式实现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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--
    bean元素，描述当前的对象需要由spring管理
    id属性：标识对象，未来在应用程序中可以根据id获取对象
    class：被管理对象的类全名

    -->
    <bean id="service" class="com.wuzl.MessageServices"></bean>

    <!--
    使用bean关联关系
    -->
    <bean id="print" class="com.wuzl.MessagePrint">
        <property name="service" ref="service"></property>
    </bean>
</beans>