用URL类 访问网络 抛出java.net.UnknownHostException 我通过局域网上网

Question

java.net.UnknownHostException
这个已经很明确了吧，为止主机或者你的url写错了
把你的url发出来

Answer 1

InputStream input;
           HttpURLConnection con = (HttpURLConnection) (sourceURL).
               openConnection();
           con.setRequestProperty("Proxy-Authorization",
                                  "Basic " + new BASE64Encoder().encode("username:password".getBytes()));
           URL url = new URL("http://www.somewhere.net/software/ACDSee60.zip");           System.out.println
               (con.getResponseCode() + " : " + con.getResponseMessage());           input = con.getInputStream();

Answer 2

之前                System.getProperties().put( "proxySet", "true" );
                System.getProperties().put( "proxyHost", "10.86.0.8");
                System.getProperties().put( "proxyPort", "80");

Answer 3

不会啊,即使有代理,url还应该是原来的啊.
这个错误是url不对.