function getRootPath(){    
//获取当前网址,如: http://localhost:8088/test/test.jsp
    var curPath=window.document.location.href;    //获取主机地址之后的目录,如: test/test.jsp
    var pathName=window.document.location.pathname;    var pos=curPath.indexOf(pathName);    //获取主机地址,如: http://localhost:8088
    var localhostPaht=curPath.substring(0,pos);    //获取带"/"的项目名,如:/test
    var projectName=pathName.substring(0,pathName.substr(1).indexOf('/')+1);    return(localhostPaht+projectName);
}