[Java]利用URLConnection檢查網站狀態

[Java]利用URLConnection檢查網站狀態 | 聰明的生活2

[Java]利用URLConnection檢查網站狀態
public class TestURLStatus {
    public static void main(String args[]) {
        try {
            java.net.URL url = new java.net.URL(
                    "http://tw.yahoo.com/123123");
            java.net.HttpURLConnection uc = (java.net.HttpURLConnection) url
                    .openConnection();
            uc.setRequestProperty("User-agent", "IE/6.0");
            uc.setReadTimeout(30000);// 設定timeout時間
            uc.connect();// 連線
            System.out.println("網址/ip位置:"+java.net.Inet4Address.getByName(url.getHost()));
            int status = uc.getResponseCode();
            System.out.println(status);
            switch (status) {
            case java.net.HttpURLConnection.HTTP_GATEWAY_TIMEOUT://504
                System.out.println("連線網址逾時!");
                break;
            case java.net.HttpURLConnection.HTTP_FORBIDDEN://403
                System.out.println("連線網址禁止!");
                break;
            case java.net.HttpURLConnection.HTTP_INTERNAL_ERROR://500
                System.out.println("連線網址錯誤或不存在!");
                break;
            case java.net.HttpURLConnection.HTTP_NOT_FOUND://404
                System.out.println("連線網址不存在!");
                break;
            case java.net.HttpURLConnection.HTTP_OK:
                System.out.println("OK!");
                break;

            }

        } catch (java.net.MalformedURLException e) {
            System.out.println("網址格式錯誤!!!");
            e.printStackTrace();
        } catch (java.io.IOException e) {
            System.out.println("連線有問題!!!!!!");
            e.printStackTrace();
        }
    }
}
原始碼如下:

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