Java获取当前路径和读取文件
1、利用System.getProperty()函数获取当前路径:
System.out.println(System.getProperty("user.dir"));//user.dir指定了当前的路径direcotry.getPath(); //得到的是..
源码如下:
- public class ReadPropertiesUtil {
- /**
- * @param args
- */
- public static void main(String[] args) {
- File directory = new File("");//设定为当前文件夹
- System.out.println(directory.getAbsolutePath());//获取绝对路径
- System.out.println(directory.getPath()); //获得new File()时设定的路径
- System.out.println(System.getProperties());
- /**
- * class.getClassLoader().getResourceAsStream($path), 其中$path默认是src源路径,maven项目一般配置了多个源路径
- * 例如:maven项目的源路径为:src/main/java,src/main/resources,src/test/java,src/test/resources,在此四个源
- * 路径下的文件可以直接写文件名即可读取
- */
- System.out.println(Thread.currentThread().getContextClassLoader().getResource("com/wpy/json/data.properties"));
- System.out.println(Thread.currentThread().getContextClassLoader().getResource("db.properties"));
- System.out.println(Thread.currentThread().getContextClassLoader().getResource("src/test/java/file1.properties"));
- System.out.println(Thread.currentThread().getContextClassLoader().getResource("file2.properties"));
- System.out.println(Thread.currentThread().getContextClassLoader().getResource("file3.properties"));
- ClassLoader classloader = Thread.currentThread().getContextClassLoader();
- System.out.println(classloader);
- if (classloader == null) {
- Properties iframeproperties = new Properties();
- classloader = iframeproperties.getClass().getClassLoader();
- }
- System.out.println(classloader);
- try {
- System.out.println(directory.getCanonicalPath());//获取标准的路径
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
来源: http://www.phpxs.com/code/1002443/