2.可以通过当前线程 Thread.currentThread().getContextClassLoader().getResource获取
public class TestDemo { public static void main(String[] args) throws FileNotFoundException, IOException { Properties pro=new Properties(); TestDemo test=new TestDemo(); pro.setProperty("url", "localhost:8080"); pro.setProperty("username", "root"); pro.setProperty("password", "123"); String filepath="G:/util/"; //pro.store(new FileOutputStream(new File("db.properties")), "资 源配置"); File file =new File(filepath); if(!file.exists()){ file.mkdir(); } File realpath=new File(file,"db.properties"); if(!realpath.exists()){ realpath.createNewFile(); } //写入properties文件 pro.store(new FileOutputStream(realpath), "properties配置"); File xmlpath=new File(file,"db.xml"); if(!xmlpath.exists()){ xmlpath.createNewFile(); } //写入xml文件中 pro.storeToXML(new FileOutputStream(xmlpath), "xml配置"); //加载配置文件 Properties pro1=new Properties(); // pro1.load(TestDemo.class.getClassLoader().getResourceAsStream("test/db.properties")); //获取文件的相对路径 //1.可以通过 类名。class.getResource方法获取或者getSystemResource //2.可以通过当前线程 Thread.currentThread().getContextClassLoader()。getResource获取 pro1.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("test/db.properties")); System.out.println(TestDemo.class.getResource("/test/db.properties")); System.out.println(Thread.currentThread().getContextClassLoader().getResource("test/db.properties")); //System.out.println(Thread.currentThread().getContextClassLoader().getSystemResource("test/db.properties")); System.out.println(test.getClass().getClassLoader().getResourceAsStream("test/db.properties")); System.out.println(TestDemo.class.getResource("/"));//斜杠代表从根路径 开始 System.out.println(TestDemo.class.getResource(""));//空格代表当前类的相对路径开始 System.out.println(Thread.currentThread().getContextClassLoader().getResource(""));//空格代表从根路径开始 String str= pro1.getProperty("password", "没找到"); System.out.println(str); } }
