tomcat配置后，可以通过浏览器访问，但是java得HttpURLConnection访问总是失败。

adfaksdf 2015-09-11 02:37:23

如题。

代码如下：



        String path = "http://localhost:8080/aaa.xml";

//        String path = "http://www.baidu.com";

        URL url = new URL(path);

        HttpURLConnection conn = (HttpURLConnection)url.openConnection();

        conn.setDoInput(true);

        conn.setConnectTimeout(5000);

        conn.setRequestMethod("GET");

//        InputStream in = conn.getInputStream();  // error

conn.getInputStream()就会出错。
出错信息如下：



java.net.ConnectException: failed to connect to localhost/127.0.0.1 (port 8080) after 5000ms: isConnected failed: ECONNREFUSED (Connection refused)

at libcore.io.IoBridge.isConnected(IoBridge.java:223)

at libcore.io.IoBridge.connectErrno(IoBridge.java:161)

at libcore.io.IoBridge.connect(IoBridge.java:112)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)

at java.net.Socket.connect(Socket.java:843)

at com.android.okhttp.internal.Platform.connectSocket(Platform.java:152)

at com.android.okhttp.Connection.connect(Connection.java:101)

at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)

at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)

at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)

at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)

at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:296)

at com.android.okhttp.internal.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:179)

......

感到非常奇怪，请教各位。非常感谢！！

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adfaksdf 2015-10-08

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@chaoge1991 求进一步解释。

北海01 2015-09-28

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我也觉得xml有问题，但是不是很清楚，麻烦@chaoge1991给解释一下

adfaksdf 2015-09-22

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引用 2 楼 rui888 的回复:

防火墙关掉看看，你是连接android 吗，如果是的话改这个。

是android。试过该方法，也不行的。

chaoge1991 2015-09-21

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.xml文件服务器一般都会选择拒绝访问

tony4geek 2015-09-11

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防火墙关掉看看，你是连接android 吗，如果是的话改这个。

wula0010 2015-09-11

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httpClient:


String url = "http://" + ip + ":" + port + "/aaa.htm";
CloseableHttpClient httpclient = HttpClients.createDefault();
HttpGet httpget = new HttpGet(url);

try {
    HttpResponse response = httpclient.execute(httpget, context);
    int httpCode = response.getStatusLine().getStatusCode();
    if (httpCode == HttpURLConnection.HTTP_OK && response != null) {
        CookieStore cookieStore = new BasicCookieStore();
        String setCookie = response.getFirstHeader("Set-Cookie").getValue();
        ... ...
        cookieStore.addCookie(cookie);
        context = HttpClientContext.create();
        context.setCookieStore(cookieStore);
        isSuccess = true;
    } else {
        logger.info("连接服务器失败!");
    }
} catch (Exception e) {
    logger.info("sangfor login失败：" + e.getMessage());
} finally {
    try {
        // 关闭流并释放资源
        httpget.abort();
    } catch (Exception e) {
    }
}