run multiple webservices at a time

I have written a webservice which is taking URL as an inp开发者_高级运维ut and producing a JSON respone. My problem is that now I have list of 1000 URLs and want to execute maximum threads of Webapplications to get output. Like I want to execute 100 instances of webservice at a time to get response.Please can anybody give some guidance how can I do it using java. Thank you in advance

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I'm not sure I understand your question.

Are you saying you want to stress test your web service?

If so, look at Grinder or JMeter.

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Basically you want to do 1000 concurrent requests, instead of doing them one-by-one.

If you can write Java code to do one request, you can write a program which spawns 1000 threads each doing one request.

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Use a ThreadPoolExecutor