spring 资源访问

spring 资源访问

        Resource resource=null;

        //访问网络资源

        resource=new UrlResource("file:bool.xml");

        //访问类加载路径下的资源

        resource=new ClassPathResource("book.xml");

        //访问文件系统资源

        resource=new FileSystemResource("book.xml");

        //访问字节数组资源

        String str="";

        byte[] fileBytes=str.getBytes();

        resource=new ByteArrayResource(fileBytes);

        //resource=new ServletContextResource()

        //resource=new InputStreamResource()

        InputStream inputStream= resource.getInputStream();

        boolean exists=resource.exists();

        boolean isOpen=resource.isOpen();

        String description=resource.getDescription();

        File file=resource.getFile();

        URL url= resource.getURL();

        ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml");

        resource=ctx.getResource("book.xml");

        ctx=new FileSystemXmlApplicationContext("beans.xml");

        ctx=new FileSystemXmlApplicationContext("/beans.xml");

        //加载相对路径

        ctx=new FileSystemXmlApplicationContext("file:beans.xml");

        //加载绝对路径

        ctx=new FileSystemXmlApplicationContext("file:/beans.xml");

        ctx=new FileSystemXmlApplicationContext("classpath:beans.xml");

        //加载多个配置文件

        ctx=new FileSystemXmlApplicationContext("classpath*:beans.xml");

        ctx=new ClassPathXmlApplicationContext("beans*.xml");

        ctx=new FileSystemXmlApplicationContext("classpath*:bean*.xml");        

配置管理

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.ImportResource;

//修饰一个Java配置类

@Configuration

//导入XML配置

@ImportResource("classpath:/beans.xml")

public class AppConfig {

    //修饰一个方法，将该方法的返回值定义成容器中的一个Bean

    @Bean

    public Person person(){

    }

    @Bean(name = "stoneAxe")

    public Axe stoneAxe(){

    }

    @Bean(name = "steelAxe")

    public Axe steelAxe(){

    }

}