Truffle 迁移错误（在运行 testrpc 之后）

Question

我无法迁移 truffle 编译附带的标准合约。这是我所做的：

truffle init
truffle compile
open other terminal and run testrpc
truffle migrate

而且前三步是顺利运行的，但是当我运行 truffle migrate时，出现

Error: No network specified. Cannot determine current network.
    at Object.detect (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:43157:23)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:200497:19
    at finished (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:43085:9)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:198408:14
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:68162:7
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:163793:9
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:160353:16
    at replenish (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:160873:25)
    at iterateeCallback (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:160863:17)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:160838:16

我的版本列表：

node 9.1.0
truffle 4.0.1
testrpc 6.0.3

谢谢！

Answer 1

您应该在位于项目文件夹根目录的配置文件 truffle.js 中指定网络。

module.exports = {
  networks: {
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*" // Match any network id
    }
  }
};

Truffle configuration#networks

Answer 2

简单的解决方案：

Problem: this configuration is coming today while you run commend "truffle init" in terminal. there is no configration defined to communicate with ethereum cli (like geth or testrpc )

// module.exports = {
//   // See <http://truffleframework.com/docs/advanced/configuration>
//   // to customize your Truffle configuration!
// };

因此，您必须像下面那样在 truffle.js

中更改它

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 8545, // your rpc port (like geth rpc port or testrpc port )
      network_id: "*"    
    }
  }
};

Truffle 迁移错误（在 运行 testrpc 之后）

Truffle migrate Error (after run testrpc)

ethereum

truffle

Truffle 迁移错误（在运行 testrpc 之后）