java.lang.IllegalStateException：目标主机为null

Question

I have googled but many concerns was " java.lang.IllegalStateException: Target host must not be null ", but in my case error was " java.lang.IllegalStateException: Target host is null "

I am trying to post a request using following code

StringEntity reqContent = new StringEntity(xmlData);
reqContent.setContentType("text/xml");

HttpPost req = new HttpPost(serverURL);
req.setEntity(reqContent);

httpClient = new DefaultHttpClient(connMgr, params);

httpClient.getCredentialsProvider().setCredentials(AuthScope.ANY,
new UsernamePasswordCredentials(username, password));

HttpResponse response = httpClient.execute(req);

After executing the request I am getting "Target host is null". I am giving a valid host. Does this error comes when Target host which I am trying to access is not available?

Answer 1

发送请求时，我想发送请求的URL变得空，这在我尝试执行请求时导致了此问题。