shell 截取字符串

vvar='{"floor":2,"hotelid":"3433bbb"}'
#vvar='{"hotelid":"3433bbb","floor":2}'
echo $vvar

var21=`echo $vvar|awk -F ',' '{print $1}'`
echo $var21
var31=`echo $var21|awk -F ':' '{print $2}'`
echo $var31

var22=`echo $vvar|awk -F ',' '{print $2}'`
echo $var22
var32=`echo $var22|awk -F ':' '{print $2}'`
echo $var32

vv=`echo $var21|grep "floor"`
echo $vv
if [ $vv ]; then
floor=$var31
hotelid=${var32%\}*}
else
floor=${var32%\}*}
hotelid=$var31
fi 

echo $floor
echo $hotelid