add json support (#1493)
add json support (#1493)


sanikoyes/skynet,xjdrew/skynet,korialuo/skynet,korialuo/skynet,xjdrew/skynet,cloudwu/skynet,wangyi0226/skynet,xjdrew/skynet,sanikoyes/skynet,cloudwu/skynet,sanikoyes/skynet,wangyi0226/skynet,wangyi0226/skynet,korialuo/skynet,cloudwu/skynet