java 之 classpath下文件路径

import java.io.DataInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;public class ClassPathTest {/** * @param args * @throws Exception  */public static void main(String[] args) throws Exception {//找得到 File file = new File("bin/com/ethan/test/readme.txt"); String path = file.getAbsolutePath(); System.out.println(file.getAbsolutePath()); // FileInputStream fis = new FileInputStream(new File(path));// InputStream is =  ClassPathTest.class.getClassLoader().getResourceAsStream("com/ethan/test/readme.txt");  //DataOutputStream 先writeUTF写入内容和内容长度，才可以用readUTF读出来。InputStream is =  ClassPathTest.class.getResourceAsStream("com/ethan/test/readme.txt"); DataInputStream dis = new DataInputStream(is); byte[] buf = new byte[4096]; int len = dis.read(buf); System.out.println(new String(buf,0,len)); is.close();}}