Java 测试URL地址是否能正常连接的代码

public static int testWsdlConnection(String address) throws Exception {
  int status = 404;
  try {
   URL urlObj = new URL(address);
   HttpURLConnection oc = (HttpURLConnection) urlObj.openConnection();
   oc.setUseCaches(false);
   oc.setConnectTimeout(3000); // 设置超时时间
   status = oc.getResponseCode();// 请求状态
   if (200 == status) {
    // 200是请求地址顺利连通。。
    return status;
   }
  } catch (Exception e) {
   e.printStackTrace();
   throw e;
  }
  return status;
 }

package test;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.log4j.Logger;
public class CheskUrl {
  private static Logger logger = Logger.getLogger(CheskUrl.class);
  private static URL urlStr;
  private static HttpURLConnection connection;
  private static int state = -1;
  private static String succ;
  public synchronized String isConnect(String url) {
   int counts = 0;
   succ = null;
   if (url == null || url.length() <= 0) {
    return succ;
   }
   while (counts < 5) {
    try {
     urlStr = new URL(url);
     connection = (HttpURLConnection) urlStr.openConnection();
     state = connection.getResponseCode();
     if (state == 200) {
      succ = connection.getURL().toString();
     }
     break;
    } catch (Exception ex) {
     counts++; logger.info("loop :" + counts);
     continue;
    }
   }
   return succ;
  }
}