Spring Bean裝配--Resource(獲取文件的幾種常用方法)

Spring Bean裝配Resource的作用：方便的獲取項目所需要引入的文件資源

實現代碼

import java.io.IOException;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.io.Resource;

//實現ApplicationContextAware接口
public class MoocResource  implements ApplicationContextAware{

    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext arg0)
            throws BeansException {
        this.applicationContext=arg0;

    }

    public void  resource() throws IOException {
        //獲取resource
        //方法1.  [ classpath:]可有可無
        Resource resource = applicationContext.getResource("classpath:config.txt");
        //方法2.  注意路徑中的分隔符爲“\\”或者“/”
        //Resource resource = applicationContext.getResource("file:D:/Workspaces/test1\\resources\\config.txt");
        //方法3.
        //Resource resource = applicationContext.getResource("url:http://blog.csdn.net/qq_38325620/article/details/72654715");
        System.out.println(resource.getFilename());
        System.out.println(resource.contentLength());
    }

}
輸出結果：
文件名稱
文件所佔內存的字節數