spring中bean的Resources(7)

2016/1/16 13:53:12

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1.Resources

• 针对于资源文件的统一接口
• Resources
  
  • UrlResource:URL对应的资源,根据一个URL地址即可创建
  • ClassPathResource:获取类路径下的资源文件
  • FileSystemResource:获取文件系统里面的资源
  • ServletContextResource:ServletContext封装的资源,用于访问ServletContext环境下的资源
  • InputStreamResource:针对输入流封装的资源
  • ByteArrayResource:针对于字节数封装的资源

2.ResourceLoader

XML:spring-resource.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"         xmlns:p="http://www.springframework.org/schema/p"         xmlns:aop="http://www.springframework.org/schema/aop"         xmlns:tx="http://www.springframework.org/schema/tx"         xmlns:mvc="http://www.springframework.org/schema/mvc"         xmlns:context="http://www.springframework.org/schema/context"         xsi:schemaLocation="http://www.springframework.org/schema/beans                            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd                             http://www.springframework.org/schema/context                            http://www.springframework.org/schema/context/spring-context-3.0.xsd                             http://www.springframework.org/schema/aop                            http://www.springframework.org/schema/aop/spring-aop-3.0.xsd                             http://www.springframework.org/schema/tx                            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd                             http://www.springframework.org/schema/mvc                            http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">         <bean id="resource" class="com.zjx.resource.Resource"></bean></beans>

bean类:

package com.zjx.resource;import java.io.IOException;import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;public class Resource implements ApplicationContextAware {    private ApplicationContext applicationContext;    @Override    public void setApplicationContext(ApplicationContext arg0)            throws BeansException {        this.applicationContext = arg0;     }    public void resource() throws IOException{        org.springframework.core.io.Resource resource = this.applicationContext.getResource("classpath:jdbc.properties");        System.out.println(resource.getFilename());        System.out.println(resource.contentLength());    }}

测试:

package com.zjx.interfaces.test;import java.io.IOException;import org.junit.Test;import org.junit.runner.RunWith;import org.junit.runners.BlockJUnit4ClassRunner;import com.zjx.resource.Resource;@RunWith(BlockJUnit4ClassRunner.class)public class TestResource extends UnitTestBase{    public TestResource() {        super("spring-resource.xml");    }    @Test    public void test() throws IOException{        Resource resource = super.getBean("resource");        resource.resource();    }}