Java路径问题

JSP取路径：
//WEB站点根目录
request.getRealPath("/");
application.getRealPath("/");
//WEB站点JSP编译文件目录
String classFile = getClass().getName().substring(getClass().getName().lastIndexOf(".") + 1)+ ".java";
String path = getClass().getResource(classFileName);
JAVA取路径：
/**
* @author hujing
* @version 1.0
* @date 2009-9-9
* @class_displayName FilePath
*/
public class FilePath {
public static FilePath getInstance() {
return new FilePath();
}
public String getWebClassesPath() {
String path = getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
return path;
}
/**
* get web rootPath
*/
public static String BL_getRootPath() {
//String path = FilePath.getInstance().getWebClassesPath();
String path = FilePath.getInstance().getRootPath();
path = path.substring(6);
int t = path.indexOf("WEB-INF");
path = path.substring(0, t);
return path;
}
public String getRootPath() {
String path = "";
try {
path = Thread.currentThread().getContextClassLoader().getResource("/").toString();
} catch (Exception e) {
e.printStackTrace();
}
return path;
}
}