android get request exception "java.lang.IllegalStateException： 目标主机不得为 null，也不得在参数中设置。

Question

android get request exception "java.lang.IllegalStateException： 目标主机不得为 null，也不得在参数中设置。scheme=null， host=null， path=http：//stage1-go.university：80/user/profile{"userId"："0"}">

嗨，我试图发出 Get 请求，在这里编码：

public InputStream setGetRequest(String concreteUrl, String jsonAsString) throws IOException {
        String url = protocol + siteUrl + ":" + httpPort + "/" +  concreteUrl + jsonAsString;
        url = URLEncoder.encode(url, "UTF-8");
        HttpGet httpGet = new HttpGet(url);
        httpGet.setHeader("sessid", ClientAPI.getSessionId());
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        HttpClient client = new DefaultHttpClient();
        String getServerString = client.execute(httpGet, responseHandler);
        return null;
    }

这是我的日志：

12-11 17:59:50.731    2715-2733/com.podorojnik E/AndroidRuntime﹕ FATAL EXCEPTION: Thread-312
    Process: com.podorojnik, PID: 2715
    java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=http://stage1-go.university:80/user/profile{"userId":"0"}
            at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
            at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
            at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
            at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:653)
            at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:627)
            at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:616)
            at com.zeoalliance.internship.pilotproject.server.NetworkRequest.setGetRequest(NetworkRequest.java:100)
            at com.zeoalliance.internship.pilotproject.server.NetworkRequest.getInputStream(NetworkRequest.java:60)
            at com.zeoalliance.internship.pilotproject.server.NetworkRequest.execute(NetworkRequest.java:45)
            at com.zeoalliance.internship.pilotproject.server.ClientAPI.getUserProfile(ClientAPI.java:156)
            at com.zeoalliance.internship.pilotproject.activities.MainActivity$1.run(MainActivity.java:58)
            at java.lang.Thread.run(Thread.java:818)

我还在清单中添加了特殊权限，但对我没有帮助

<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

有人可以帮忙吗？

Answer 1

你直接返回空值;

在你的setGetRequest方法中输入以下代码：

String getServerString = client.execute(httpGet, responseHandler);
        return getServerString ;

而不是：

String getServerString = client.execute(httpGet, responseHandler);
        return null;

享受！！！

Answer 2

您的路径设置为：

path=http://stage1-go.university:80/

stage1-go.university不是主机，甚至不是有效的URL。 需要一个顶级域名，如.com、.net或类似的东西。 如果这有效，您应该可以在任何浏览器中转到 http://stage1-go.university，但这不起作用 - 我刚刚尝试过