<p>我正在尝试使用Lambda函数向AWS Aurora MySQL数据库写入数据。</p> <h3>代码</h3> <p>出于某种原因，它似乎无法正常工作。到目前为止，我的代码非常简单，但无法正确执行。这是一个简单的Lambda函数，当用户注册到Cognito时调用，应该在SQL数据库中创建一个新条目，包含用户凭据。</p> <pre class="brush:php;toolbar:false;">const mysql = require('mysql') const db = mysql.createConnection({ host: "*****", port: *****, user: "*****", password: "*****", database: "*****", }) export const lambdaHandler = async (event: any, context: any,) => { const user = { uid: event.request.userAttributes.sub, username: event.request.userAttributes.nickname, email: event.request.userAttributes.email, } console.log("before query") const query = `INSERT INTO users (Uid, Username, Email) VALUES (${user.uid}, ${user.username}, ${user.email})` await db.query(query, (err: any, result: any) => { if (err) console.error(err) console.log("query response: " + result) }) console.log("after query") return event; };</pre> <p>函数的输出如下：</p> <pre class="brush:php;toolbar:false;">START RequestId: bb1d2143-97e4-4761-a48a-f482cf94f73b Version: $LATEST 2022-03-17T14:02:35.956Z bb1d2143-97e4-4761-a48a-f482cf94f73b INFO before query 2022-03-17T14:02:35.961Z bb1d2143-97e4-4761-a48a-f482cf94f73b INFO after query END RequestId: bb1d2143-97e4-4761-a48a-f482cf94f73b REPORT RequestId: bb1d2143-97e4-4761-a48a-f482cf94f73b Init Duration: 0.14 ms Duration: 138.07 ms Billed Duration: 139 ms Memory Size: 128 MB Max Memory Used: 128 MB</pre> <p>注意：查询函数没有找到日志记录（应该抛出错误或记录响应）</p> <h3>策略</h3> <p>Lambda函数的执行角色中包含以下策略：<code>AWSLambdaVPCAccessExecutionRole</code>和<code>AWSLambda_FullAccess</code></p> <h3>其他</h3> <p>Lambda函数和Aurora位于同一VPC的不同子网中。我不确定这是否会导致问题。但这不会导致函数抛出错误吗？类似于<code>missing authorization</code>的错误？</p> <p>我不明白我在这一点上还缺少什么</p>

const util = require('util');
const mysql = require('mysql');

const db = mysql.createConnection({
    host: "*****",
    port: *****,
    user: "*****",
    password: "*****",
    database: "*****",
});

// 将db.query转换为返回promise的函数
const promisifiedQuery = util.promisify(db.query);

export const lambdaHandler = async (event: any, context: any,) => {
    const user = {
        uid: event.request.userAttributes.sub,
        username: event.request.userAttributes.nickname,
        email: event.request.userAttributes.email,
    };

    console.log("before query");

    // 顺便说一下，这样做是不好的。请阅读有关如何避免SQL注入的内容。
    const query = `INSERT INTO users (Uid, Username, Email) VALUES (${user.uid}, ${user.username}, ${user.email})`;

    await promisifiedQuery(query).then(result => {
        console.log("query response: " + result)
        console.log("after query")
    }).catch(console.error)

    return event;
};