Java获取网页源或者超时

Question

我正在尝试从网页获取数据，但如果该页面不可用，程序将运行很长时间直到超时。我需要它尝试获取网页 10 秒，如果在这段时间内没有得到响应，则返回 null。请问我怎样才能让它这样工作？

这是我获取数据的方式:

public int getThreadData( String address ) throws IOException{
    String valueString = null;
    URL url = new URL( "http://" + address + ":8080/web-console/ServerInfo.jsp" );
    URLConnection urlConnection = url.openConnection();
    urlConnection.setRequestProperty( "User-Agent",
        "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) 
         Gecko/20100401" );
    BufferedReader br = new BufferedReader( new InputStreamReader
        ( urlConnection.getInputStream(), "UTF-8" ) );

    String inputLine;

    while ( ( inputLine = br.readLine() ) != null )
    {
        if ( inputLine.contains( "#Threads" ) )
        {
            valueString = inputLine.substring( inputLine.indexOf( "/b>" ) + 3 );
            valueString = valueString.substring( 0, valueString.indexOf( "<" ) );
        }
    }
    br.close();

    return Integer.parseInt( valueString );

}

Answer 1

您是否尝试过如下设置连接超时:

urlConnection.setConnectTimeout(10000); // 10000 milliseconds