/**

     * http://localhost:8088/projectName

     */

    function getRootPath(){

        //获取当前网址，如： http://localhost:8088/projectName/index.jsp

        var curWwwPath = window.document.location.href;

        //获取主机地址之后的目录，如： projectName/index.jsp

        var pathName = window.document.location.pathname;

        var pos = curWwwPath.indexOf(pathName);

        //获取主机地址，如： http://localhost:8088

        var localhostPath = curWwwPath.substring(0, pos);

        //获取带"/"的项目名，如：/projectName

        var projectName = pathName.substring(0, pathName.substr(1).indexOf('/')+1);

        return(localhostPath + projectName);

    }