Question

我编写了简单的java代码，它使用HttpUrlConnection从一个网站获取结果。即雅虎。

我的代码如下。

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class Demo {
    public static void main(String[] args) throws Exception {

        String url = "http://www.yahoo.com/";

        URL obj = new URL(url);
        HttpURLConnection con = null;

        con = (HttpURLConnection) obj.openConnection();
        con.setRequestProperty("User-Agent", "Mozilla/5.0");
        con.setRequestMethod("GET");
        con.setDoOutput(true);
        System.out.println(con.getResponseCode());

        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;

        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);

        }
        in.close();
        con.disconnect();

    }
}

我已停止在我的计算机上安装Windows防火墙（Windows 10）

但是当我从eclipse运行这段代码时，我遇到了异常。

Exception in thread "main" java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at java.net.Socket.connect(Socket.java:538)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
    at sun.net.www.http.HttpClient.New(HttpClient.java:308)
    at sun.net.www.http.HttpClient.New(HttpClient.java:326)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1168)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1104)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:998)
    at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:932)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1512)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
    at com.ideas.sydney.mascotvalet.Demo.main(Demo.java:20)

但是，当我从online editor运行此代码时，它按预期工作，即毫无例外。

让我知道是否有人知道如何解决这个问题

由于

Eclipse和Windows 10中的HttpUrlConnection问题

0 个答案: