这篇文章将为大家详细讲解有关类路径下的文件怎么利用Java进行读取，文章内容质量较高，因此小编分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。
Java 读取类路径下的文件
一、工具类代码ResourceLoadUtil.java
import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.util.ArrayList; import java.util.Enumeration; import java.util.List; public class ResourceLoadUtil { public static void main(String[] args) { System.out.println("ByClazz...\n--------------------------"); System.out.println(loadResourceByClazz(String.class, "/java/lang/String.class")); System.out.println(loadResourceByClazz(String.class, "/ResourceLoadUtil.class")); System.out.println(); System.out.println("ByClasLoader...\n--------------------------"); System.out.println(loadResourceByClassLoader("java/lang/String.class")); System.out.println(loadResourceByClassLoader("ResourceLoadUtil.class")); System.out.println(); System.out.println("sByClasLoader...\n--------------------------"); System.out.println(loadResourcesByClassLoader("java/lang/String.class")); System.out.println(loadResourcesByClassLoader("ResourceLoadUtil.class")); System.out.println(loadResourcesByClassLoader("struts-plugin.xml")); } public static InputStream loadResourceByClazz(Class<?> clazz, String path) { return clazz.getResourceAsStream(path); } public static InputStream loadResourceByClassLoader(String path) { return loadResourceByClassLoader(null, path); } public static InputStream loadResourceByClassLoader(ClassLoader cl, String path) { if (cl == null) { cl = Thread.currentThread().getContextClassLoader(); } return cl.getResourceAsStream(path); } public static List<URL> loadResourcesByClassLoader(String path) { return loadResourcesByClassLoader(null, path); } public static List<URL> loadResourcesByClassLoader(ClassLoader cl, String path) { if (cl == null) { cl = Thread.currentThread().getContextClassLoader(); } List<URL> urlLst = new ArrayList<URL>(); try { Enumeration<URL> urlsEnum = cl.getResources(path); while (urlsEnum.hasMoreElements()) { URL url = (URL) urlsEnum.nextElement(); urlLst.add(url); } } catch (IOException e) { e.printStackTrace(); } return urlLst; } }二、执行结果
ByClazz... -------------------------- sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream@11cfb549 java.io.BufferedInputStream@a422ede ByClasLoader... -------------------------- sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream@7f12f614 java.io.BufferedInputStream@35d9dc39 sByClasLoader... -------------------------- [jar:file:/D:/Java/jdk1.6.0_25/jre/lib/rt.jar!/java/lang/String.class] [file:/E:/workspace/JBDS/Spring+Struts2-Integration/target/classes/ResourceLoadUtil.class] [jar:file:/E:/360data/%e9%87%8d%e8%a6%81%e6%95%b0%e6%8d%ae/.m2/repository/org/apache/struts/struts2-spring-plugin/2.3.4.1/struts2-spring-plugin-2.3.4.1.jar!/struts-plugin.xml, jar:file:/E:/360data/%e9%87%8d%e8%a6%81%e6%95%b0%e6%8d%ae/.m2/repository/org/apache/struts/struts2-config-browser-plugin/2.3.4.1/struts2-config-browser-plugin-2.3.4.1.jar!/struts-plugin.xml]关于类路径下的文件怎么利用Java进行读取就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
