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报这种错误：一般在生成private key前面添加"0x"即可解决。我就是在私钥前面添加了"0x"解决了。

在学习web3时，使用助词生成的私钥，然后由私钥导出keystore就报错：

ERROR
Invalid Private Key, Not a valid string or uint8Array
InvalidPrivateKeyError: Invalid Private Key, Not a valid string or uint8Arrayat parseAndValidatePrivateKey (webpack-internal:///./node_modules/web3-eth-accounts/lib/esm/account.js:132:11)at eval (webpack-internal:///./node_modules/web3-eth-accounts/lib/esm/account.js:523:32)at Generator.next (<anonymous>)at eval (webpack-internal:///./node_modules/web3-eth-accounts/lib/esm/account.js:66:67)at new Promise (<anonymous>)at __awaiter (webpack-internal:///./node_modules/web3-eth-accounts/lib/esm/account.js:48:10)at Object.encrypt (webpack-internal:///./node_modules/web3-eth-accounts/lib/esm/account.js:521:52)at genMnemonic (webpack-internal:///./node_modules/unplugin/dist/webpack/loaders/transform.js?unpluginName=unplugin-vue-components!./node_modules/babel-loader/lib/index.js??clonedRuleSet-40.use[0]!./node_modules/vue-loader/dist/index.js??ruleSet[0].use[0]!./src/components/AccountSys.vue?vue&type=script&setup=true&lang=js:46:42)

开始报错以为是自己没开梯子,但我用之前写的demo是能查询到eth账户余额，于是根据报错信息怀疑是生成的privatekey不对，我照着学习的视频检查了代码跟它一样没问题呀，然后我在生成的私钥前面添加了"0x"就可以了。

//获取钱包私钥const privateKey=wallet.getPrivateKey().toString("hex");    
const web3 = new Web3(Web3.givenProvider || 'wss://sepolia.infura.io/ws/v3/018c25a8b5ce4f23810c49f60478471f');const keystore = web3.eth.accounts.encrypt('0x'+privateKey,'111111');

搞定。