用JAVA代码访问一段URL地址是否可用怎么写？

用JAVA代码访问一段URL地址是否可用怎么写？
首先、介绍一下get方式：

	String mainDomain = agentFacade.getVirtualHostService().getMainDomainName(domain);
				String webServer =this.getVzzjzManageService().getVZZJZWebSiteByDomain(domain);
				String httpUrl="http://mydns2.xinnet.com/"+"cgi-bin/dnsapi_add?+name=" + mainDomain + "&recordname=" + webServer+ "&type=CNAME&content=" + domain + "&ttl=3600&prio=5";
				URL url = new URL(httpUrl);
				HttpURLConnection httpUrlCon = (HttpURLConnection) url
						.openConnection();
				httpUrlCon.setDoOutput(true);
				httpUrlCon.setRequestMethod("GET");
				BufferedReader xinnetIn = new BufferedReader(new InputStreamReader(
						httpUrlCon.getInputStream()));
				String back = xinnetIn.readLine();
				if(null != back && back.contains("ret=100")) {
					log.debug(" zhixiang successfully!");
				}
				else {
					log.debug("connect error  sitebuild zhixiang error!");
					put("error","网络错误，请重试");
					throw new MyBizLayerException("自助建站开通成功，指向错误！");
				}
				
				xinnetIn.close();
				httpUrlCon.disconnect();

第二，介绍一个post方式：

String clubBack = null;
		String sendParam = "domainName=" + newDomainName ;
String httpVhost = "http://www.xinnet.com/club/vhost/checkVhost.jsp";
			URL url = new URL(httpVhost);
			HttpURLConnection httpUrlCon = (HttpURLConnection) url
					.openConnection();

			httpUrlCon.setDoOutput(true);
			httpUrlCon.setRequestMethod("POST");
			httpUrlCon.getOutputStream()
					.write(sendParam.toString().getBytes());
			httpUrlCon.getOutputStream().flush();
			httpUrlCon.getOutputStream().close();

			BufferedReader xinnetIn = new BufferedReader(new InputStreamReader(
					httpUrlCon.getInputStream()));
			clubBack = xinnetIn.readLine();
			xinnetIn.close();
			httpUrlCon.disconnect();
			if (clubBack == null) {
				log.debug("connect error!");
				put("error","网络错误，请重试");
				return "vzzjzupdatedomainname";
			}
			if("1".equals(clubBack)){
				log.debug(clubBack);
				put("error","您的域名已开通自助建站产品，请更换其他域名绑定！");
				return "vzzjzupdatedomainname";
				
			}

评论

1 楼 jiangxiankun 2013-05-09  

请问一下这个需要什么jar包吗