增加了发送图片和接收图片的逻辑，未完待续
Revert "增加了发送图片和接收图片的逻辑，未完待续"

This reverts commit 1a7308fc0e769ef8a04cef21d615322b1255f664.
Merge branch 'master' of https://github.com/tcmaster/OurProject