Java 測試URL地址是否能正常連接
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); // 設置超時時間status = oc.getResponseCode();// 請求狀態if (200 == status) { // 200是請求地址順利連通。 。 return status; } } catch (Exception e) { e.printStackTrace(); throw e; } return status; }定義了一個int型，如果返回可200則是地址能成功連通，如果返回0或者其他則是失敗。
下面再看一段關於Java檢測URL是否可用或者可打開的代碼
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; }}