Question

wow , i just can’t find any working httpclient 4.1 example , to send post request with Not default port
but configurable port , i have this code but its dosn’t work

// lHashMapParams is with params getting form function .. 

List<BasicNameValuePair> params = new ArrayList<BasicNameValuePair>();
        for (String key : lHashMapParams.keySet()) {
            String val = lHashMapParams.get(key);
            params.add(new BasicNameValuePair(key,val));

}
String url = "https://foo.com";
int port = 8883;
String = "https";
UrlEncodedFormEntity query = new UrlEncodedFormEntity(params);
        HttpHost httpHost = new HttpHost(url,port,httpType); 

        HttpPost post = new HttpPost("/");
        post.setEntity(query);


        HttpResponse response_ = httpclient.execute(httpHost,post);

getting this exception :

log4j:WARN Please initialize the log4j system properly.
java.net.UnknownHostException: https://foo.com
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:849)
    at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1183)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1136)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1109)
    at java.net.InetAddress.getAllByName(InetAddress.java:1072)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:242)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:130)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:561)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:776)
    at com.ut.HttpClientImpl.postHttpReqest(HttpClientImpl.java:75)  

is simple words how to define port ?

Answer 1

You are attempting to perform a lookup of the host name https://foo.com
and that’s the problem; the lookup should have been against foo.com. I’m not sure as to how you’ve arrived at the code in question, but it would be worth some time to take a look at the HttpClient tutorial.

If I’m not wrong, the following code, should be sufficient:

HttpPost httpost = new HttpPost(url); //construct the complete URL i.e. action to post to
httpost.setEntity(entity);
response = httpclient.execute(httpost);

where url is to be constructed with the http/https schema, host name, port and the rest of the resource URI.