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(){
        
    }
}