我正在尝试使用Channel类的queryTransaction（）方法在1.4中使用事务ID来获取数据。但是它不能确定方法。我是否缺少代码段？
下面是我正在使用的代码；
/*
* SPDX-License-Identifier: Apache-2.0
*/
'use strict';
const { FileSystemWallet, Gateway } = require('fabric-network');
const path = require('path');
const ccpPath = path.resolve(__dirname, '..', '..', 'first-network', 'connection-org1.json');
async function main() {
try {
// Create a new file system based wallet for managing identities.
const walletPath = path.join(process.cwd(), 'wallet');
const wallet = new FileSystemWallet(walletPath);
console.log(`Wallet path: ${walletPath}`);
// Check to see if we've already enrolled the user.
const userExists = await wallet.exists('user1');
if (!userExists) {
console.log('An identity for the user "user1" does not exist in the wallet');
console.log('Run the registerUser.js application before retrying');
return;
}
// Create a new gateway for connecting to our peer node.
const gateway = new Gateway();
await gateway.connect(ccpPath, { wallet, identity: 'user1', discovery: { enabled: true, asLocalhost: true } });
// Get the network (channel) our contract is deployed to.
const network = await gateway.getNetwork('mychannel');
// Get the contract from the network.
const contract = network.getContract('fabcar');
// Evaluate the specified transaction.
const result = await network .queryTransaction('3c185a9409cc001179d4646fdd28db52174b0f45ae58c133de53f5147a5b5e7f');
console.log(`Transaction has been evaluated, result is: ${result.toString()}`);
} catch (error) {
console.error(`Failed to evaluate transaction: ${error}`);
process.exit(1);
}
}
main();
正如您所说的，queryTransaction是Channel类中的方法，但是您正试图从Network类中调用它（实际上是从零开始，因为您有空格）。使用getClient中的Gateway，然后使用getChannel中的Client，然后使用queryTransaction。