java替换url的域名和端口方法

public static String replaceDomainAndPort(String domain,String port,String url){String url_bak = "";if(url.indexOf("//") != -1 ){String[] splitTemp = url.split("//");url_bak = splitTemp[0]+"//";if(port != null){url_bak = url_bak + domain+":"+port;}else{url_bak = url_bak + domain;}if(splitTemp.length >=1 && splitTemp[1].indexOf("/") != -1){String[] urlTemp2 = splitTemp[1].split("/");if(urlTemp2.length > 1){for(int i = 1;i < urlTemp2.length; i++){url_bak = url_bak +"/"+urlTemp2[i];}}System.out.println("url_bak:"+url_bak);}else{System.out.println("url_bak:"+url_bak);}}return url_bak;}