java发送json格式的post请求问题

请问在java中如何发送如下json格式的post请求到服务器端：
{"code":"apidemo","password":"demopwd","member":{"email":"yuson@dingdingfang.com","nickname":"YUSON"}}
--------------------编程问答-------------------- http://topic.csdn.net/u/20120907/15/ca472c40-c36a-4ca1-82ad-91bfb8de1c2f.html --------------------编程问答-------------------- JAVA 的不要放在 C# 中 

补充：.NET技术 ,  ASP.NET