I’m sure while working on Java Web Project, you must have faced these kind of questions:
- How to get HTTP response code for a URL in Java?
- How to check if a URL exists or returns 404 with Java?
- How can I read the status code of a HTTP request?
- How to get HTTP code from org.apache.http.HttpResponse?
- How to check if my Tomcat is up and running?
Well, below simple Java Program will answer all your mentioned questions. Do let me know if you see any problem.
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package com.crunchify.tutorials; import java.io.IOException; import java.net.HttpURLConnection; import java.net.URL; /** * @author Crunchify.com * */ public class CrunchifyGetPingStatus { public static void main(String args[]) throws Exception { String[] hostList = { "https://crunchify.com", "http://yahoo.com", "http://www.ebay.com", "http://google.com", "http://www.example.co", "https://paypal.com", "http://bing.com/", "http://techcrunch.com/", "http://mashable.com/", "http://thenextweb.com/", "http://wordpress.com/", "http://wordpress.org/", "http://example.com/", "http://sjsu.edu/", "http://ebay.co.uk/", "http://google.co.uk/", "http://www.wikipedia.org/", "http://en.wikipedia.org/wiki/Main_Page" }; for (int i = 0; i < hostList.length; i++) { String url = hostList[i]; String status = getStatus(url); System.out.println(url + "\t\tStatus:" + status); } } public static String getStatus(String url) throws IOException { String result = ""; try { URL siteURL = new URL(url); HttpURLConnection connection = (HttpURLConnection) siteURL .openConnection(); connection.setRequestMethod("GET"); connection.connect(); int code = connection.getResponseCode(); if (code == 200) { result = "Green"; } } catch (Exception e) { result = "->Red<-"; } return result; } } |
Output:
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https://crunchify.com Status:Green http://yahoo.com Status:Green http://www.ebay.com Status:Green http://google.com Status:Green http://www.example.co Status:->Red<- https://paypal.com Status:Green http://bing.com/ Status:Green http://techcrunch.com/ Status:Green http://mashable.com/ Status:Green http://thenextweb.com/ Status:Green http://wordpress.com/ Status:Green http://wordpress.org/ Status:Green http://example.com/ Status:Green http://sjsu.edu/ Status:Green http://ebay.co.uk/ Status:Green http://google.co.uk/ Status:Green http://www.wikipedia.org/ Status:Green http://en.wikipedia.org/wiki/Main_Page Status:Green |
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Giving red for every website