Spring也是一个开源框架,我在学习Spring的时候,认为最重要的几点是:IOC(控制反转)、AOP(面向切面)和容器概念。
详细的教程还请大家去看网上的视频,这里贴一个小Demo以供学习。
(前提是大家把该导入的jar包都导入了)
1、Student类和Teacher类
public class Student {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void sayHello() {
System.out.println("Hi," + name);
}
}
import java.util.List;
public class Teacher {
private List<Student> stuList;
private String name;
public List<Student> getStuList() {
return stuList;
}
public void setStuList(List<Student> stuList) {
this.stuList = stuList;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void myStu() {
System.out.println(name + " :");
for(int i = 0; i < stuList.size(); i++)
System.out.println(stuList.get(i).getName());
}
}
2、配置文件:applicationContext.xml的配置
<?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="student_1" class="Student"> <property name="name" value="小明"> </property> </bean> <bean id="student_2" class="Student"> <property name="name" value="小凡"> </property> </bean> <bean id="teacher" class="Teacher"> <property name="name" value="崔老师"/> <property name="stuList"> <list> <ref bean= "student_1"/> <ref bean= "student_2"/> </list> </property> </bean> </beans>
3、主类:main(直接执行就可以)
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class main {
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
Student stu = (Student) ac.getBean("student_1");
stu.sayHello();
Teacher tec = (Teacher) ac.getBean("teacher");
tec.myStu();
}
}