在Node.js中使用Lambda函数更新DynamoDB表

const AWS = require('aws-sdk');
const dynamoDB = new AWS.DynamoDB();

exports.handler = async (event) => {
  try {
    // 解析传入的事件数据
    const { tableName, key, value } = JSON.parse(event.body);

    // 构建更新请求参数
    const params = {
      TableName: tableName,
      Key: {
        id: { S: key }
      },
      UpdateExpression: 'SET attribute = :value',
      ExpressionAttributeValues: {
        ':value': { S: value }
      }
    };

    // 更新DynamoDB表
    await dynamoDB.updateItem(params).promise();

    return {
      statusCode: 200,
      body: 'DynamoDB表更新成功'
    };
  } catch (error) {
    return {
      statusCode: 500,
      body: 'DynamoDB表更新失败: ' + error.message
    };
  }
};

const axios = require('axios');

const updateDynamoDB = async (tableName, key, value) => {
  const url = 'https://your-lambda-function-url';
  const data = {
    tableName,
    key,
    value
  };

  try {
    const response = await axios.post(url, data);
    console.log(response.data);
  } catch (error) {
    console.error(error.response.data);
  }
};

// 调用更新函数
updateDynamoDB('your-table-name', 'your-key', 'your-value');