connecting-lambda-to-api-gateway

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Connecting Lambda to API Gateway

将Lambda连接至API Gateway

Overview

概述

Domain expertise for creating Amazon API Gateway REST APIs and connecting them to existing Lambda functions. Covers API creation, resource and method setup, Lambda proxy integration, CORS configuration, security controls, deployment, and testing.

本技能专注于创建Amazon API Gateway REST API并将其与现有Lambda函数连接的领域知识。涵盖API创建、资源与方法配置、Lambda代理集成、CORS配置、安全控制、部署及测试等内容。

Connect a Lambda function to API Gateway

将Lambda函数连接至API Gateway

To create a REST API and wire it to a Lambda function, follow the procedure exactly. See Lambda to API Gateway connection procedure.

The procedure supports configurable authorization types (NONE, AWS_IAM, COGNITO_USER_POOLS, CUSTOM), optional API key requirements, CORS setup, and production security hardening including throttling and access logging.

要创建REST API并将其与Lambda函数关联，请严格遵循以下步骤。详见Lambda与API Gateway连接步骤。

该步骤支持可配置的授权类型（NONE、AWS_IAM、COGNITO_USER_POOLS、CUSTOM）、可选的API密钥要求、CORS设置，以及包含限流和访问日志记录的生产环境安全加固。

Troubleshooting

故障排查

502 Bad Gateway

The Lambda function must return a proxy-compatible response with

statusCode

headers

, and a stringified

body

. See the full procedure for format details.

Lambda函数必须返回符合代理兼容格式的响应，包含

statusCode

、

headers

及字符串化的

body

。格式详情请查看完整步骤。

Permission denied invoking Lambda

调用Lambda时权限被拒绝

Ensure

lambda:InvokeFunction

permission was added with the correct API Gateway source ARN. See the full procedure for details.

确保已添加带有正确API Gateway源ARN的

lambda:InvokeFunction

权限。详情请查看完整步骤。

CORS errors in browser

浏览器中出现CORS错误

Verify

enable_cors

was set to true, the OPTIONS method was created, and CORS headers are configured in both method and integration responses.

确认

enable_cors

已设置为true，OPTIONS方法已创建，且CORS头已在方法响应和集成响应中配置。