JavaWeb学习笔记-spring-02-ioc-BeanFactory&ApplicationContext

BeanFactory&ApplicationContext

BeanFactory

Resource resource = new ClassPathResource("applicationContext.xml");
BeanFactory factory = new XmlBeanFactory(resource);
Test test = (Test)factory.getBean("test");

applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC
"-//SPRING//DTD BEAN//EN"
"http://www.spring framework.org/dtd/spring-beans.dtd">
<benas>
<bena id="test" class="com.mr.test.Test">
</beans>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${org.springframework.version}</version>
</dependency>

public class Car {
private String brand;
private String color;
private String maxSpeed;

public String getBrand() {
return brand;
}

public void setBrand(String brand) {
this.brand = brand;
}

public String getColor() {
return color;
}

public void setColor(String color) {
this.color = color;
}

public String getMaxSpeed() {
return maxSpeed;
}

public void setMaxSpeed(String maxSpeed) {
this.maxSpeed = maxSpeed;
}
}

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
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="car" class="com.smart.Car"
p:brand="xxx"
p:color="xxx"
p:maxSpeed="xxx"/>

</beans>

public class BeanFactoryTest {
public static void main(String[] args)throws Throwable{
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
Resource res = resolver.getResource("classpath:beans.xml");
BeanFactory bf = new XmlBeanFactory(res);
System.out.println("init BeanFactory");
Car car = bf.getBean("car",Car.class);
System.out.println(car.getColor());
}
}

ApplicationContext

//"classpath:beans.xml"=="beans.xml",配置文件在类路径下
ApplicationContext ctx = new ClassPathXmlApplicationoContext("beans.xml");
//"file:beans.xml"=="beans.xml"，配置文件在文件系统下
ApplicationContext ctx = new FileSystemXmlApplicationContext("beans.xml");
//多个配置文件组合
ApplicationCntext ctx = new ClassPathXmlApplicationContext(new String[]{"beans1.xml","beans2.xml"});