将字符串添加到dynamodb表的列表中

const tencentcloud = require("tencentcloud-sdk-nodejs");
const TcDynamoDB = tencentcloud.dynamodb.v20181026;

// 创建DynamoDB客户端
const clientConfig = {
  credential: {
    secretId: "YOUR_SECRET_ID",
    secretKey: "YOUR_SECRET_KEY",
  },
  region: "ap-guangzhou",
};
const client = new TcDynamoDB.Client(clientConfig);

// 构造要添加的字符串
const newString = "New String";

// 获取现有列表
const getItemParams = {
  TableName: "YOUR_TABLE_NAME",
  Key: {
    // 根据您的表结构设置主键
    primaryKey: "PRIMARY_KEY_VALUE",
  },
};
client.GetItem(getItemParams, (err, data) => {
  if (err) {
    console.error("Error retrieving item:", err);
  } else {
    // 添加字符串到列表
    const existingList = data.Item.list;
    existingList.push(newString);

    // 更新DynamoDB表
    const updateItemParams = {
      TableName: "YOUR_TABLE_NAME",
      Key: {
        // 根据您的表结构设置主键
        primaryKey: "PRIMARY_KEY_VALUE",
      },
      UpdateExpression: "SET #list = :list",
      ExpressionAttributeNames: {
        "#list": "list",
      },
      ExpressionAttributeValues: {
        ":list": existingList,
      },
    };
    client.UpdateItem(updateItemParams, (err, data) => {
      if (err) {
        console.error("Error updating item:", err);
      } else {
        console.log("Item updated successfully");
      }
    });
  }
});