Target host must not be null, or set in parameters

Question

I get this error "Target host must not be null, or set in parameters". My manifest file has internet permission set, and I have put 'http://' before my Url. It still gives the same error. My URL does not have a 'www.' attached to it.

Part of my Code:

HttpPost post = new HttpPost("http://infocreation.something_something1.xml");

Part of my manifest is like below:

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

What do I do now?

Just to be clear: there is no such thing as an ".xml" TLD, so either your example-URI above is badly chosen, or you are trying to do something strange. If your real code also has the `.xml`, then there's your problem: there is no such thing to send a HTTP request to. — Nanne, Jan 07 '12 at 10:15
Thank you for your response. Using the URL without the underscore has worked for me. The .xml part is ok. — Ama, Jan 07 '12 at 10:22
by the way, I was getting this error because I forgot to add http://. I was writing www.something.com, but it must be http://www.something.com — PeerNet, May 24 '16 at 09:39

score 10 · Answer 1 · answered Jan 06 '12 at 14:18

10

It should be

HttpPost post = new HttpPost("http://www.infocreation.something.xml");

answered Jan 06 '12 at 14:18

coder_For_Life22

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The url is not www.infocreation.something.xml. It is http://infocreation.something.xml. There is no www. I get a "Host name may not be null" error when I put www in the Url – Ama Jan 06 '12 at 14:20
I just tried going to your site, it doesnt exist. What are you trying to do? – coder_For_Life22 Jan 06 '12 at 14:23
There is no .com? I tried navigating to your site and it says the server cant be found. Are you sure you are doing this correctly? – coder_For_Life22 Jan 06 '12 at 14:24
The Url i have put there is not the actual Url. I am trying to send data to that Url via post. – Ama Jan 06 '12 at 14:24
Oh! Well it would help to have the real url. – coder_For_Life22 Jan 06 '12 at 14:24
With the code in my answer that format should be working, unless it is something with the site. – coder_For_Life22 Jan 06 '12 at 14:25

score 7 · Accepted Answer · edited May 23 '17 at 12:15

7

So I replaced the URL, with almost the same URL, except without the underscore and that worked. I realized from further searches (for example here) that URLs with _(underscore) are not valid, although that particular URL may work. Thanks for all your help.

edited May 23 '17 at 12:15

Community

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answered Jan 07 '12 at 10:17

Ama

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score 7 · Answer 3 · answered Jan 07 '12 at 10:17

7

Are you putting a real and working url inot the HttpPost constructor?

Anyway this is your solution:

If you have the following code failing:

HttpGet httpget = new HttpGet("www.host.com");

Then the error is pretty easy to solve: The problem is that you have not added a protocol to the URL, so change it to:

HttpGet httpget = new HttpGet("http://www.host.com");

And then it will work as wanted.

Source: h3x.no

answered Jan 07 '12 at 10:17

StErMi

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Thank you Nanne. I didn't put the real URL in the question. The real URL doesn't have a www. attached to it. And I am using POST, not GET. Thank you. – Ama Jan 07 '12 at 10:21
You error was not refered to HttpGet or HttpPost, it was general. The error was because you were not putting the http://www or your url was wrong formed. – StErMi Jan 07 '12 at 10:31

Target host must not be null, or set in parameters

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