java - Servlet abnormal invoking -

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i have servlet:

@webservlet ("/*") public class x extends httpservlet {     @override     protected void doget(httpservletrequest req, httpservletresponse resp)      throws servletexception, ioexception {         system.out.println("1");     } }

i cannot figure out why prints "1" twice. can explain that?

output:
1
1

you can print out 

request.getrequesturi()

to confirm urls 2 requests.


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