Java 读取类路径下的资源文件实现代码

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 {    /**    * @param args    */   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"));    }    /**    * 根据Class加载资源文件    *    * @param clazz    * @param path    *      以'/'开头的路径: 使用绝对路径寻找文件(以ClassPath为根路径开始)<br>    *      否则: 使用相对路径寻找文件(相对于clazz位置路径开始)    * @return    */   public static InputStream loadResourceByClazz(Class<?> clazz, String path) {     return clazz.getResourceAsStream(path);   }    /**    * 根据ClassLoader加载资源文件(单个), 使用默认的ClassLoader!    *    * @param path    *      不能以'/'开头的路径    * @return    */   public static InputStream loadResourceByClassLoader(String path) {     return loadResourceByClassLoader(null, path);   }    /**    * 根据ClassLoader加载资源文件(单个), 使用默认的ClassLoader!    *    * @param path    *      不能以'/'开头的路径    * @return    */   public static InputStream loadResourceByClassLoader(ClassLoader cl, String path) {     if (cl == null) {       cl = Thread.currentThread().getContextClassLoader();     }     return cl.getResourceAsStream(path);   }    /**    * 根据ClassLoader加载资源文件(多个),使用默认的ClassLoader!    *    * @param path    *      不能以'/'开头的路径    * @return    */   public static List<URL> loadResourcesByClassLoader(String path) {     return loadResourcesByClassLoader(null, path);   }    /**    * 根据ClassLoader加载资源文件(多个),使用指定的ClassLoader!    *    * @param path    *      不能以'/'开头的路径    * @return    */   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;   } }    

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]