java怎么读取conf文件？Java读取配置文件的方式

/**

          * 取当前启动目录的配置文件，如果没有取加载在当前classpath下的。

          * @param classLoader

          * @param confClassDirectory

          * @return

          * @throws FileNotFoundException

          */

         publicstatic InputStream getInputStreamByConfPath(ClassLoader classLoader,StringconfClassDirectory) throws FileNotFoundException {

                   if(confClassDirectory.startsWith("/")) {

                            confClassDirectory= confClassDirectory.substring(1);

                   }

                   //取当前启动目录的配置文件

                   StringfilePath = classLoader.getResource("").getFile()+ confClassDirectory;

                   InputStreamin=null;

                   Filefile = new File(filePath);

                   //如果不存在取当前启动的classpath下的

                   if(!file.exists()) {

                            in= classLoader.getResourceAsStream(confClassDirectory);

                            if(null == in) {

                                     in=classLoader.getResourceAsStream("/"+ confClassDirectory);

                            }

                   }else{

                            in=newFileInputStream(file);

                   }

                   returnin;

         }

/**

          *根据class类找到对应的jar取指定的配置文件

          * @param cls

          * @param confClassDirectory

          * @return

          * @throws IOException

          */

         publicstatic InputStream getInputStreamByJarFileConfPath(Class cls,StringconfClassDirectory) throws IOException {

                   StringjarPath=cls.getProtectionDomain().getCodeSource().getLocation().getFile();

                   if(confClassDirectory.startsWith("/")) {

                            confClassDirectory= confClassDirectory.substring(1);

                   }

                   if(jarPath==null) {

                            returnnull;

                   }

                   InputStreamin=null;

                   //判断如果是以jar结束的时候就是在服务器中使用

                   if(jarPath.endsWith(".jar")) {

                       JarFile jarFile = new JarFile(jarPath);

                       JarEntry entry =jarFile.getJarEntry(confClassDirectory);

                            in= jarFile.getInputStream(entry);

                   }else{

                            //就是可能本地直接依赖项目的使用

                            Filefile=new File(jarPath+confClassDirectory);

                            if(file.exists()) {

                                     in=newFileInputStream(file);

                            }

                   }

                   returnin;

         }

}

Enumerationurlss=ClassLoader.getSystemResources("conf/conf.properties");

                    while(urlss.hasMoreElements()){

                             System.out.println(urlss.nextElement().getFile());

                    }