servlet和JS获取域名和项目

	public String getHeadUrl(HttpServletRequest request) {
		String projName=request.getContextPath();
		String netPort=request.getRequestURL().toString().split("//")[1].split("/")[0];
		String netAddr="http://"+netPort;
		return netAddr+projName;
	}

  

JS:

  //获取当前网址,如:http://127.0.0.1:8080/Tmall/index.jsp?id=1
var curWwwPath=window.document.location.href;

//获取主机地址之后的目录如:/Tmall/index.jsp
var pathName=window.document.location.pathname;
var pos=curWwwPath.indexOf(pathName);

//获取主机地址,如:http://127.0.0.1:8080
var localhostPaht=curWwwPath.substring(0,pos);

//获取带"/"的项目名,如:/Tmall
var projectName=pathName.substring(0,pathName.substr(1).indexOf('/')+1); 

 

  

原文地址:https://www.cnblogs.com/JAYIT/p/13639089.html