framework of http connection get and post

Still, a not completed work, but the framework is done
I use the character stream method to read data for json if there's
problem please indicate
ToT, I cannot debug it with android 'cause my laptop collapses and
the virtual machine cannot run
to do: add gson to parse the data that I'm still try to get it clear
I find an async httpconnection frame for android but I'm finding out
whether it's useful
Plus, unit test will come later and later on ...
project