V2 兑换路由

Router for stateless execution of swaps against PancakeSwap V2

V2 兑换路由（V2SwapRouter）。

Solidity API

swapExactTokensForTokens

function swapExactTokensForTokens(uint256 amountIn, uint256 amountOutMin, address[] path, address to) external payable returns (uint256 amountOut)

Swaps amountIn of one token for as much as possible of another token

Setting amountIn to 0 will cause the contract to look up its own balance, and swap the entire amount, enabling contracts to send tokens before calling this function.

Parameters

Name	Type	Description
amountIn	uint256	The amount of token to swap
amountOutMin	uint256	The minimum amount of output that must be received
path	address[]	The ordered list of tokens to swap through
to	address	The recipient address

Return Values

Name	Type	Description
amountOut	uint256	The amount of the received token

swapTokensForExactTokens

function swapTokensForExactTokens(uint256 amountOut, uint256 amountInMax, address[] path, address to) external payable returns (uint256 amountIn)

Swaps as little as possible of one token for an exact amount of another token

Parameters

Name	Type	Description
amountOut	uint256	The amount of token to swap for
amountInMax	uint256	The maximum amount of input that the caller will pay
path	address[]	The ordered list of tokens to swap through
to	address	The recipient address

Return Values

Name	Type	Description
amountIn	uint256	The amount of token to pay