Spring--多人开发

在spring中， 可以定义多个配置文件。

例子：

①首先定义一个班级类和一个学生类

  1 package com.fuwh.spring;

 2 
 3 public class Clazz {
 4     
 5     private String name;
 6     private int grade;
 7 
 8     public int getGrade() {
 9         return grade;
10     }
11     public void setGrade(int grade) {
12         this.grade = grade;
13     }
14     public Clazz() {
15         System.out.println("Clazz类被初始化");
16         // TODO Auto-generated constructor stub
17     }
18     public String getName() {
19         return name;
20     }
21     public void setName(String name) {
22         this.name = name;
23     }
24     @Override
25     public String toString() {
26         return "Student [name=" + name + ", grade=" + grade + "]";
27     }
28     
29 }

  1 package com.fuwh.spring;

 2 
 3 public class Student {
 4     
 5     private String name;
 6     private int age;
 7     private Clazz clazz;
 8     
 9     public Clazz getClazz() {
10         return clazz;
11     }
12     public void setClazz(Clazz clazz) {
13         this.clazz = clazz;
14     }
15     public Student() {
16         System.out.println("Student类被初始化");
17         // TODO Auto-generated constructor stub
18     }
19     public String getName() {
20         return name;
21     }
22     public void setName(String name) {
23         this.name = name;
24     }
25     public int getAge() {
26         return age;
27     }
28     public void setAge(int age) {
29         this.age = age;
30     }
31     @Override
32     public String toString() {
33         return "Student [name=" + name + ", age=" + age + ",grade=" + clazz.getGrade()+clazz.getName() +"]";
34     }
35 }

② 定义两个配置文件，分别配置clazz（beanClazz）和student(studentClazz)

  1 <?xml version="1.0" encoding="UTF-8"?>

 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xsi:schemaLocation="http://www.springframework.org/schema/beans
 5         http://www.springframework.org/schema/beans/spring-beans.xsd">
 6 
 7     <!-- services -->
 8     
 9     <bean id="clazz" class="com.fuwh.spring.Clazz" lazy-init="default">
10         <property name="name" value="信息与计算科学"></property>
11         <property name="grade" value="08"></property>
12     </bean>
13     
14 </beans>

  1 <?xml version="1.0" encoding="UTF-8"?>

 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xsi:schemaLocation="http://www.springframework.org/schema/beans
 5         http://www.springframework.org/schema/beans/spring-beans.xsd">
 6 
 7     <!-- services -->
 8     
 9     <bean id="student" class="com.fuwh.spring.Student" lazy-init="default">
10         <property name="name" value="fengzi"></property>
11         <property name="age" value="23"></property>
12         <property name="clazz" ref="clazz"></property>
13     </bean>
14     
15 </beans>

 ③接下来测试一下，由于使用了多个配置文件的方式，所以在实例化applicationContext的时候，需要给ClassPathXmlApplicationContext传递一个配置文件的数组

 1 package com.fuwh.spring;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.support.ClassPathXmlApplicationContext;
 5 
 6 public class Spring01 {
 7 
 8     public static void main(String[] args) {
 9         
10 //        ApplicationContext ac=new ClassPathXmlApplicationContext("bean.xml");
11         ApplicationContext ac=new ClassPathXmlApplicationContext(new String[]{"beanStudent.xml","beanClazz.xml"});
12         System.out.println(ac.getBean("student"));
13     }

14 } 

 ★也可以在beanStudent.xml文件中，使用如下命令，将beanClazz.xml文件引入进来。这样在实例化ApplicationContext的时候，就只需要传入beanStudent.xml文件即可。

【<import resource="beanClazz.xml"/>】