02、Spring-HelloWorld

2020-12-30 02:30

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标签：cell mys 提取 ioc value generate set border show

0. 环境准备

1) jar包

jar包我会帮大家准备好的，所以不用担心找不到Jar包链接：https://pan.baidu.com/s/1JJcYaspK07JL53vU-q-BUQ 提取码：1028

c3p0-0.9.1.2.jar

commons-logging-1.1.1.jar

mysql-connector-java-5.1.7-bin.jar

spring-aop-4.0.0.RELEASE.jar

spring-beans-4.0.0.RELEASE.jar

spring-context-4.0.0.RELEASE.jar

spring-core-4.0.0.RELEASE.jar

spring-expression-4.0.0.RELEASE.jar

1. applicationContext.xml

1     
2     class="com.cnblogs.www.pluto.Spring">
3         4

SpringBean

2. HelloWorld.java

 1 public class HelloWorld {
 2 
 3     private String name;
 4 
 5     public void setName(String name) {
 6         System.out.println("setname: "+name);
 7         this.name = name;
 8     }
 9     
10     public void hello() {
11         System.out.println("hello "+name);
12     }
13 
14     public HelloWorld() {
15         System.out.println("helloworld‘s constructor...");
16     }
17     
18 }

HelloWorld

3. Main.java

 1 import org.springframework.context.ApplicationContext;
 2 import org.springframework.context.support.ClassPathXmlApplicationContext;
 3 
 4 public class Main {
 5 
 6     public static void main(String[] args) {
 7         // TODO Auto-generated method stub
 8         /* 
 9         HelloWorld helloWorld = new HelloWorld();
10         helloWorld.setName("pluto");
11         helloWorld.hello();
12         */
13         
14         //1.创建Spring的IOC容器对象
15         ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
16         //2.从IOC容器中获取Bean实例
17         HelloWorld helloWorld = (HelloWorld) ctx.getBean("helloworld");
18         //3.调用hello方法
19         System.out.println(helloWorld);
20         helloWorld.hello();
21     }
22 
23 }