从零开始学Spring-Spring入门- 校招VIP

转载声明：文章来源https://blog.csdn.net/qq_38066923/article/details/83317878

Spring概念

１．Spring 是一个开源框架
２．Spring 是为了简化企业级应用开发而生，使用Spring　可以简单的３．３．JavaBean 实现只EJB才能开发的功能
４．Spring 是java/javaee 一站式框架

##　spring优点
1.放便解耦，简单开发
2.Aop 编程支持
３声明事务的支持
4.方便程序的测试
５．方便框架的集合
６．降低开发难度

Spring ioc 的基本开发入门

1.创建接口

package com.imooc;

public interface imp {
    public  void Demo();
}

2.创建实现类

package com.imooc;

public class SpringDemo1 implements imp {
   private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void Demo() {

        System.out.println("hello" +name);
    }
}

3.导入Spring 所需包

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.imooc.springioc</groupId>
    <artifactId>springioc</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>5.0.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>5.0.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.8.RELEASE</version>
        </dependency>
    </dependencies>
</project>

4.配置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.xsd">
    <bean id="text" class="com.imooc.SpringDemo1">
        <!--设置依赖注入-->
        <property name="name" value="张三"></property>
        
        
    </bean>
</beans>

5.创建测试类

package com.imooc;

public class SpringDemo1 implements imp {
    public void Demo() {
        System.out.println("hello"+name);
    }
}

6. 实现结果