プログラムパスを読み込むPropHelperツールクラス

package com.ving.dataexchange.util;

public class PropHelper {
	/**
	 * guessPropFile:
	 * 
	 * @param cls:                     
	 * @param propFile:         
	 */
	public static java.io.InputStream guessPropFile(Class cls, String propFile) {
		try {
			//         
			ClassLoader loader = cls.getClassLoader();

			//                     
			java.io.InputStream in = loader.getResourceAsStream(propFile);
			if (in != null)
				return in;

			//     ，                 
			Package pack = cls.getPackage();
			if (pack != null) {
				String packName = pack.getName();
				String path = "";
				if (packName.indexOf(".") < 0)
					path = packName + "/";
				else {
					int start = 0, end = 0;
					end = packName.indexOf(".");
					while (end != -1) {
						path = path + packName.substring(start, end) + "/";
						start = end + 1;
						end = packName.indexOf(".", start);
					}
					path = path + packName.substring(start) + "/";
				}
				in = loader.getResourceAsStream(path + propFile);
				if (in != null)
					return in;
			}

			//       ，                
			java.io.File f = null;
			String curDir = System.getProperty("user.dir");
			f = new java.io.File(curDir, propFile);
			if (f.exists())
				return new java.io.FileInputStream(f);

			//         ，             
			String classpath = System.getProperty("java.class.path");
			String[] cps = classpath
					.split(System.getProperty("path.separator"));

			for (int i = 0; i < cps.length; i++) {
				f = new java.io.File(cps[i], propFile);
				if (f.exists())
					break;
				f = null;
			}
			if (f != null)
				return new java.io.FileInputStream(f);
			return null;
		} catch (Exception e) {
			throw new RuntimeException(e);
		}

	}
	public static String guessPropFilePath(Class cls, String propFile) {
		try {
			//         
			ClassLoader loader = cls.getClassLoader();

			//                     
			java.io.InputStream in = loader.getResourceAsStream(propFile);
			if (in != null)
				return propFile;

			//     ，                 
			Package pack = cls.getPackage();
			if (pack != null) {
				String packName = pack.getName();
				String path = "";
				if (packName.indexOf(".") < 0)
					path = packName + "/";
				else {
					int start = 0, end = 0;
					end = packName.indexOf(".");
					while (end != -1) {
						path = path + packName.substring(start, end) + "/";
						start = end + 1;
						end = packName.indexOf(".", start);
					}
					path = path + packName.substring(start) + "/";
				}
				in = loader.getResourceAsStream(path + propFile);
				if (in != null)
					return path;
			}

			//       ，                
			java.io.File f = null;
			String curDir = System.getProperty("user.dir");
			f = new java.io.File(curDir, propFile);
			if (f.exists())
				return f.getAbsolutePath();

			//         ，             
			String classpath = System.getProperty("java.class.path");
			String[] cps = classpath
					.split(System.getProperty("path.separator"));

			for (int i = 0; i < cps.length; i++) {
				f = new java.io.File(cps[i], propFile);
				if (f.exists())
					break;
				f = null;
			}
			if (f != null)
				return f.getAbsolutePath();
			return null;
		} catch (Exception e) {
			throw new RuntimeException(e);
		}

	}
}