这里有新鲜出炉的Java设计模式,程序狗速度看过来!
java 是一种可以撰写跨平台应用软件的面向对象的程序设计语言,是由Sun Microsystems公司于1995年5月推出的Java程序设计语言和Java平台(即JavaEE(j2ee), JavaME(j2me), JavaSE(j2se))的总称。
本文给大家分享两段代码分别是java测试URL地址是否能正常连接和Java检测URL是否可用或者可打开的代码,代码都很简单,有需要的朋友可以参考下
Java 测试URL地址是否能正常连接
- 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); // 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;
- }
定义了一个int型,如果返回可200则是地址能成功连通,如果返回0或者其他则是失败。
下面再看一段关于Java检测URL是否可用或者可打开的代码
- 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;
- }
- }
来源: http://www.phperz.com/article/17/1109/360202.html