Posting a url containing an underscore (_)

Question

I am posting a url with params containg an underscore (_).

sample: http://sdsdsds_asasasahjhd.com/dsdsdsd/login.json?

I am posting it like this:

    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost("http://sdsdsds_asasasahjhd.com/dsdsdsd/login.json?");
    try {
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("key1", "value1"));
        nameValuePairs.add(new BasicNameValuePair("key2", "value2"));
        nameValuePairs
                .add(new BasicNameValuePair("key3", "value3"));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        // Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);

    } catch (Exception e) {
        e.printStackTrace();
    }

When I am inspecting httpclient.execute(httppost) I am getting IllegalArgumentException and in catch in exception details it is telling Host name cannot be null. Please specify any solution.

I have gone through some other questions here:

but no use as I am not encoding the whole url.

It helps if you provide a (partial) stack trace and details about the line number where the exception occurs. — Veger, Nov 30 '12 at 12:54
or http://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_host_names - is that a local (Windows?) server? WP says "Windows [does not] enforce the rule against using an underscore in hostnames" — zapl, Nov 30 '12 at 13:10

score 1 · Answer 1 · answered Apr 07 '13 at 18:00

I have an open-source library with network implementation mechanism. It has just receiver an workaround implementation. All you need it to set the host by reflection in case of troubles:

        final URI uriObj = new URI("https", host, path, null, null);
        if (uriObj.getHost() == null) {
            final Field hostField = URI.class.getDeclaredField("host");
            hostField.setAccessible(true);
            hostField.set(uriObj, host);
        }
        return uriObj;

The commit is here.

score 0 · Accepted Answer · answered Nov 30 '12 at 12:51

0

well it clearly states that the host name can not be null.. your url doesn't specify one..

a url is expected to be in the format

http://hostName.com/example..../example.json

answered Nov 30 '12 at 12:51

Vinay W

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This same url is working in Iphone then I think so it should work in android. – zaiff Nov 30 '12 at 13:00
This is wrong. Actually, URI class does't support host name with underscore, but i'm in the process of searching the workaround(-1) – Vladimir Ivanov Apr 07 '13 at 17:14

score 0 · Answer 3 · answered Nov 30 '12 at 12:53

0

HttpPost httppost = new HttpPost(String);

This contructor will attempt to form a URL instance from the provided String. If this fails, you'll be dealing with a null value.

Please post the actual URL you're using and not a sample if you want us to be able to help you further.

answered Nov 30 '12 at 12:53

Rawkode

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sorry unable to post the actual url.Do you think it is all because of "_"? – zaiff Nov 30 '12 at 13:01
no the underscore is not the issue its the format of your URL it does not look like a URL it has to have a tld in it somewhere. – Tkingovr Nov 30 '12 at 13:03

score 0 · Answer 4 · answered Jul 30 '13 at 13:58

0

See this link. Apache doesnt support underscore. You should change the url

https://issues.apache.org/jira/browse/HTTPCLIENT-911

answered Jul 30 '13 at 13:58

benoffi7

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Posting a url containing an underscore (_)

4 Answers4

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