Uniswap返回0

Question

我正试着得到100块钱我能收到的WETH的数量：

uniswapController.sol

contract UniswapController {
    address internal constant UNISWAP_ROUTER_ADDRESS = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    IUniswapV2Router02 public uniswapRouter;

    constructor() public {
        uniswapRouter = IUniswapV2Router02(UNISWAP_ROUTER_ADDRESS);
    }

    function getAmountsOut(uint fundingamount, address[] memory path) public view returns (uint[] memory) {
        return uniswapRouter.getAmountsOut(fundingamount, path);     
    }

js客户端代码：

dai.address = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
ethereum.address = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

let amounts = await uniswapController.getAmountsOut(100, [dai.address, ethereum.address]);

let daioutput = amounts[0].toNumber();
let ethereumoutput = amounts[1].toNumber();

console.log("Dai output:", daioutput); // returns 100
console.log("ethereum output:", ethereumoutput); // returns 0

我如何返回我可以得到的100代，而不是仅仅0的部分WETH？

Answer 1

你应该把100转换成魏。

如果您使用web3.js，您可以这样做

web3.utils.toWei(100);