AWS API Gateway提供了多种认证方式的支持，可以在同一个端点上同时使用多种认证方式。以下是实现此功能的代码示例。

1. 在API Gateway中创建一个新端点
2. 在“设置”选项卡下选择“身份验证”并选择您要使用的身份验证类型
3. 添加所需的身份验证方法

代码示例：

{
  "swagger": "2.0",
  "info": {
    "title": "My API Gateway",
    "version": "1.0"
  },
  "schemes": [
    "https"
  ],
  "securityDefinitions": {
    "cognito": {
      "name": "Authorization",
      "type": "apiKey",
      "in": "header",
      "x-amazon-apigateway-authtype": "awsSigv4",
      "x-amazon-apigateway-authorizer": {
        "type": "cognito_user_pools",
        "providerARNs": [
          "arn:aws:cognito-idp:${region}:${accountId}:userpool/${userPoolId}"
        ],
        "authorizerResultTtlInSeconds": 300
      }
    },
    "iam": {
      "name": "Authorization",
      "type": "apiKey",
      "in": "header",
      "x-amazon-apigateway-authtype": "awsSigv4",
      "x-amazon-apigateway-authorizer": {
        "type": "aws_iam",
        "authorizerUri": "arn:aws:apigateway:${region}:lambda:path/2015-03-31/functions/${authorizerFuncArn}/invocations"
      }
    }
  },
  "security": [
    {
      "cognito": [],
      "iam": []
    }
  ],
  "paths": {
    "/users": {
      "get": {
        "security": [
          {
            "cognito": [],
            "iam": []
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response"
          }
        }
      },
      "post": {
        "security": [
          {
            "cognito": [],
            "