Spring4-容器1-容器概述

1 准备Bean类-User

package com.ws.edu.spring;

public class User {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public User() {
super();
}
public User(int id, String name) {
super();
this.id = id;
this.name = name;
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + "]";
}
}

2 编写基于XML的配置文件-beans.xml

<?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="user" class="com.ws.edu.spring.User"/>
</beans>

3 使用容器-App

package com.ws.edu.spring;

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

public class App {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
User user = context.getBean("user",User.class);
System.out.println(user);
}
}

4 运行结果

5 使用<import/>引入其他的xml配置文件

<import/>

<beans>
<import resource="services.xml"/>
<import resource="resources/messageSource.xml"/>
<import resource="/resources/themeSource.xml"/>

<bean id="bean1" class="..."/>
<bean id="bean2" class="..."/>
</beans>

5.1 编写Bean类-User1

package com.ws.edu.spring;

public class User1 {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public User1() {
super();
}
public User1(int id, String name) {
super();
this.id = id;
this.name = name;
}
@Override
public String toString() {
return "User [id=" + id + ", name=" + name + "]";
}
}

5.2 编写beans1.xml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="user1" class="com.ws.edu.spring.User1"/>
</beans>

5.3 修改beans.xml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"> 
<import resource="beans1.xml"/>

<bean id="user" class="com.ws.edu.spring.User"/>
</beans>

5.4 修改App类

package com.ws.edu.spring;

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

public class App {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
User user = context.getBean("user",User.class);
System.out.println(user);
User1 user1 = context.getBean("user1",User1.class);
System.out.println(user1);
}
}

5.5 运行结果