應用根路徑整理類

import java.io.File;

/**
 * @author SiPei.Qiao
 * @function 應用根路徑整理類
 */
public class PathUtil {
    /**
     * @function 得到類所在的本地目錄
     * @return
     */
    public String getWebClassesPath() {
        String path = getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
        return path;
    }

    /**
     * 得到WEB-INF根目錄
     * 
     * @return
     * @throws IllegalAccessException
     */
    public String getWebInfPath() throws IllegalAccessException {
        String path = getWebClassesPath();
        if (path.indexOf("WEB-INF") > 0) {
            if ("\\".equals(File.separator)) {
                path = path.substring(0, path.indexOf("WEB-INF") + 8);
                path = path.substring(1, path.length());
                // path = path.replaceAll("/", "\\");
                // System.out.println(path);
            } else {
                path = path.substring(0, path.indexOf("WEB-INF") + 8);
            }
        } else {
            throw new IllegalAccessException("Can't get WebInfo path");
        }
        return path;
    }

    /**
     * @function 得到應用的根目錄
     * @return
     * @throws IllegalAccessException
     */
    public String getWebRoot() throws IllegalAccessException {
        String path = getWebClassesPath();
        if (path.indexOf("WEB-INF") > 0) {
            String keyWord = "WEB-INF";
            if ("\\".equals(File.separator)) {
                path = path.substring(1, path.indexOf(keyWord));
            } else {
                path = path.substring(0, path.indexOf(keyWord));
            }
        } else {
            throw new IllegalAccessException("Can't get WebRoot path");
        }
        return path;
    }

    /**
     * @function 得到應用的根目錄
     * @return
     */
    public String getWebRootEx() {
        try {
            return getWebRoot();
        } catch (Exception e) {
            return null;
        }
    }

}