Ethereum Solidity：如何在compile.js文件中编译多个智能合约？

我想在一个compile.js文件中编译多个合同，但我不确定如何做到这一点

我的compile.js文件和一个合同如下所示：

const path = require('path');
const fs = require('fs');
const solc = require('solc');

const lotteryPath = path.resolve(__dirname, 'contracts', 'Lottery.sol');

const source = fs.readFileSync(lotteryPath, 'utf8');

module.exports = solc.compile(source, 1);

---

如何向compile.js文件中添加更多合同？我知道1必须更改为合同数量，但不确定还需要什么？

以下是我做的一个示例。你可以在一本书中找到它。简单地说，我有一个“build”文件夹，在那里我将每个编译的契约的输出写入Json文件

const path = require("path"); //nodejs ’path’ module
    const solc = require("solc"); //solidity compiler module
    const fs = require("fs-extra"); //file system module

    // Feth path of build
    const buildPath = path.resolve(__dirname, "build");
    const contractspath = path.resolve(__dirname, "contracts");

    // Removes folder build and every file in it
    fs.removeSync(buildPath);

    // Fetch all Contract files in Contracts folder
    const fileNames = fs.readdirSync(contractspath);

    // Gets ABI of all contracts into variable input
    const input = fileNames.reduce(
      (input, fileName) => {
        const filePath = path.resolve(__dirname, "contracts", fileName);
        const source = fs.readFileSync(filePath, "utf8");
        return { sources: { ...input.sources, [fileName]: source } };
      },
      { sources: {} }
    );

    // Compile all contracts
    const output = solc.compile(input, 1).contracts;

    // Re-Create build folder for output files from each contract
    fs.ensureDirSync(buildPath);

    // Output contains all objects from all contracts
    // Write the contents of each to different files
    for (let contract in output) {
      fs.outputJsonSync(
        path.resolve(buildPath, contract.split(":")[1] + ".json"),
        output[contract]
      );
    }

基本上，如果不将path struct更改为My，则必须更改上述代码的这一部分：

// Feth path of build
        const buildPath = path.resolve(__dirname, "build");
        const contractspath = path.resolve(__dirname, "contracts");

---

经批准的解决方案不适用于坚固性

>0.6.0

和

{
const filePath=path.resolve（contractPath，fileName）；
const source=fs.readFileSync（文件路径，“utf8”）；
返回{…输入，[fileName]：{content:source}；
}, {}),
设置：{
输出选择：{
"*": {
“*”：[“abi”，“evm.bytecode.object”]，
},
},
},
};
//汇编所有合同
const compiled=JSON.parse（solc.compile（JSON.stringify（compileriput））；
fs.ensureDirSync（buildPath）；
fileNames.map（（文件名）=>{
const contracts=Object.keys（compiled.contracts[fileName]）；
contracts.map（（contract）=>{
fs.outputJsonSync(
resolve（buildPath，contract+“.json”），
已编译。合同[文件名][合同]
);
});
});

确保检查您的

pragma solidity x.x.x

是否与

package.json

中指定的版本匹配。例如，如果我使用的是

solidity 0.6.12

我的solidity编译将是：

“依赖项”：{
...
“solc”：“^0.6.12”，
...
}

compile.js:

const path= require('path');
const solc = require('solc');
const fs = require('fs-extra');

const builtPath = path.resolve(__dirname, 'build');
//remove file in build module
fs.removeSync(builtPath);
const healthPath = path.resolve(__dirname, 'contract','health.sol');
//read  content present in file
console.log(healthPath);
const source = fs.readFileSync(healthPath,'utf8');
//compile contract
const output = solc.compile(source,1).contracts;
//create build folder

fs.ensureDirSync(builtPath);
console.log(output);


for(let contract in output)
{
    fs.outputJsonSync(
      path.resolve(buildPath, contract.replace(':','')+ '.json'),
      output[contract]
  );
}