TypeError: “send“ and “transfer“ are only available for objects of type “address payable“, not “addr

transfer“ are only available for objects of type “address payable“, not “addr"/>

TypeError: “send“ and “transfer“ are only available for objects of type “address payable“, not “addr

TypeError: "send" and "transfer" are only available for objects of type "address payable", not "address".

以下书写方式可以看到编译会报错。

pragma solidity ^0.8.7;contract  transferTest{function transfer(address account) payable public{account.transfer(msg.value);}   
}TypeError: "send" and "transfer" are only available for objects of type "address payable", not "address".

这个写法在之前版本没有什么问题，但是在 Solidity 0.8之后，address就不是默认payable类型了。所以要在address前面加上payable的强制类型转换，如下：

pragma solidity ^0.8.7;contract  transferTest{function transfer(address account) payable public{payable(account).transfer(msg.value);}   
}TypeError: "send" and "transfer" are only available for objects of type "address payable", not "address".

然后就可以成功编译啦！

参考链接: 我自己的个人博客.