Spring -- 5.Resources

以下为学习笔记

UrlResource:URL对应的资源，根据一个URL地址去构建

ClassPathResource:对应类路径下的资源文件（相对路径）

FileSystemResource:获取文件系统里面的资源（绝对路径）

ServletContextResource:ServletContext封装的资源用于访问ServletContext环境下的资源（与web相关的入口）

InputStreamResource:针对于输入流封装的资源

ByteArrayResource:针对于字节数组封装的资源

ResourceLoader

对resource进行加载

public interface ResourceLoader{

Resource gerResource(String location);

}

Resource remplate = ctx.getResource("some/resource/path/my.txt");

Resource remplate = ctx.getResource("classpath:some/resource/path/my.txt");

Resource remplate = ctx.getResource("file:/some/resource/path/my.txt");

http: --http://myserver/logo.png

(none) -- /data/config.xml

---------------------------------

public class MyResource implements ApplicationContextAware {

private ApplicationContext applicationContext;

//获取到applicationContext并且赋值

@Override

public void setApplicationContext(ApplicationContext applicationContext) throws BeansException{

this.applicationContext = applicationContext;

}

public void resource(){

applicationContext.gerResource("classpath:config.txt");

applicationContext.gerResource("file:D:\\ddd\web_projects\\spring\\src\\main\\resources\\config.txt");

applicationContext.gerResource("url:http://docs.spring.io/spring/docs/4.0.5/RELEASE/spring-framework-reference/htmlsingle");

applicationContext.gerResource("config.txt");

//没有前缀的时候，依赖于applicationContext，默认classpath的方式加载，是取super("classpath:xxx")传入的那个classpath

}