spring入门程序一

1、下载spring，解压。

2、eclipse新建普通工程，对工程添加external jar包，在spring解压后的dist/module目录下和lib目录下

3、在src下新建包，建立HelloBean.java

package com.springinaction.chapter01.hello;

public class HelloBean {

 private String hello;

 public String getHello() {
  return hello;
 }

 public void setHello(String hello) {
  this.hello = hello;
 }
 
 
}

4、建立beans.xml，注意beans.xml一定要放在工程的根目录下：

<?xml version="1.0" encoding="UTF-8" ?>    
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
  "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="helloBean" class="com.springinaction.chapter01.hello.HelloBean">
<property name="hello">
<value>"hello mm"</value>
</property>

</bean>
</beans>

4、建立测试类：HelloBeanTest.java

package com.springinaction.chapter01.hello;

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

public class HelloBeanTest {
public static void main(String[] args){
 
   ApplicationContext context = new FileSystemXmlApplicationContext("/beans.xml");
   HelloBean hellot = (HelloBean)context.getBean("helloBean");
   System.out.println(hellot.getHello());
  
}
}

运行即可看输出结果：

hello mm