先添加jar包
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!--spring-core-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<!--spring-bean-->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>
<!--spring-context-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<!--spring-expression-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
</dependency>
</dependencies>
第二步创建配置文件spring.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">
</beans>
第三步书写一个类ResourceBean
package com.ioc15;
import org.springframework.core.io.Resource;
/**
* package_name:com.ioc15
* Author:徐亚远
* Date:2020/2/14 14:47
* 项目名:springDemo01
* Desription:
**/
public class ResourceBean {
private Resource resource;
public Resource getResource() {
return resource;
}
public void setResource(Resource resource) {
this.resource = resource;
}
}
第四步 配置spring.xml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="resource1" class="com.ioc15.ResourceBean">
<property name="resource" value="classpath:ioc15/spring.xml"/>
</bean>
</beans>
第五步书写测试类
package com.ioc15;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.Resource;
import org.springframework.util.StreamUtils;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* package_name:com.ioc15
* Author:徐亚远
* Date:2020/2/14 14:48
* 项目名:springDemo01
* Desription:
**/
public class TestResource {
public static void main(String[] args) throws IOException {
ApplicationContext ac = new ClassPathXmlApplicationContext("ioc15/spring.xml");
ResourceBean resourceBean = (ResourceBean) ac.getBean("resource1");
Resource resource = resourceBean.getResource();
System.out.println("文件名称:" + resource.getFilename());
System.out.println("文件大小:" + resource.contentLength());
System.out.println("文件是否存在:" + resource.exists());
InputStream inputStream = resource.getInputStream();
StreamUtils.copy(inputStream, new FileOutputStream("e:/two.xml"));
}
}
执行结果如图: