Calling Java RESTful webservice in Android

Question

i have created a Java Restful Web service. Now i want to access it in Android. There are different methods in Webservice. Web service is running on http://192.15.10.62:8080. how should i call a method named getGreetingMsg() in webservice which take a string argument and return a simple String message.

Web service Details

Project name RestFulWS

package Name rest.ws.server

class Name helloAndroid

Method Name getGreetingMsg(string argument)

any help will be appreciated.

RESTful services dont have methods .... This services using http methods — Selvin
– Selvin, Commented Feb 23, 2012 at 18:31
here is my method @GET @Produces(MediaType.TEXT_PLAIN) public String getGreetingMsg(String mesg) { return "Hello User"; } — waseemwk
– waseemwk, Commented Feb 23, 2012 at 18:34

Sly · Accepted Answer · 2012-02-24 08:53:42Z

5

Simply with an HTTP client like AndroidHttpClient.

EDIT: RESTful web service is accessible through URL like:

http://yourserver/someservice/<categoryID>/<objectID>

So, you can test your webservice from a web browser like Internet Explorer or Mozilla Firefox.

Then, on Android, use HTTP Get request and the AndroidHttpClient.

Don't forget to set the INTERNET permission in your AndroidManifest.xml too

edited Feb 24, 2012 at 8:53

answered Feb 23, 2012 at 17:26

Sly

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4 Comments

waseemwk Over a year ago

can u tell me what is categoryID and ObjectID

Sly Over a year ago

It's just a general example. <categoryID> and <objectID> are variables. In your case, the URL could be something like: yourserver/helloAndroid/getGreetingMsg/<argument>

waseemwk Over a year ago

i am accessing a webservice by 10.99.17.103:8081/hello/sayPlainTextHello/my_string_argument HttpClient httpclient = new DefaultHttpClient(); --------- HttpGet httpget = new HttpGet(url); ---------- response = httpclient.execute(httpget); -------- but i am getting error at this Last line... Exception is Target Host must not be Null

Sly Over a year ago

Are you testing on a phone or emulator? Besides, have you tried to access this URL from the web browser?

Mukesh Kumar · Accepted Answer · 2012-04-28 18:46:15Z

1

It depend on the Web server you are using because each type of server will have its own URL to service hosted on it. If you are using JBOSS server then your URL looks like this IP:PORT/projectname/webservicename/method name

answered Apr 28, 2012 at 18:46

Mukesh Kumar

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Comments

dbDev · Accepted Answer · 2012-02-23 18:04:21Z

1

Sounds like you're not sure how to approach your own API. If your API supports GET, then open a web browser and try some GET commands. Once you have a GET statement working, work through this tutorial: http://sarangasl.blogspot.com/2011/06/android-login-screen-using-httpclient.html.

Once you're set with POST, turn off GET in your webserver.

Good luck!

db

answered Feb 23, 2012 at 18:04

dbDev

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