AWS LAMBDA越来越空值作为查询字符串

Question

我定义我的AWS::ApiGateway::Method这样

GetOrdersMethod: 
     Type: "AWS::ApiGateway::Method" 
     Properties: 
      ApiKeyRequired: true 
      AuthorizationType: "AWS_IAM" 
      HttpMethod: "GET" 
      RequestParameters: 
       method.request.querystring.orderId: false 
      ResourceId: 
       Ref: "GetOrdersPathResource" 
      RestApiId: 
       Ref: "GetOrders" 
      Integration: 
       Type: "AWS_PROXY" 
       IntegrationHttpMethod: "POST" 
       RequestTemplates: 
        application/json: !Join ["", ["{","\"orderId\": \"$input.params('orderId')\"","}"]] 
       Uri: !Join ["", ["arn:aws:apigateway:", !Ref "AWS::Region", ":lambda:path/2015-03-31/functions/",!GetAtt GetProgramsLambdaFunction.Arn, "/invocations"]] 

我处理这样定义

public class ProgramHandler implements RequestHandler<Request, String>{ 
    private LambdaLogger logger; 

    @Override 
    public String handleRequest(Request request, Context context) { 
     logger = context.getLogger(); 

     logger.log("FROM LOGGER: ======= LAMBDA INVOKED ======"); 
     logger.log("Input value: " +request.getOrderId()); 
     System.out.println("======= LAMBDA INVOKED ======"); 
     System.out.println("Input value: " +request.getMarketplaceId()); 

     return "Lambda Invoked successfully"; 
    } 
} 

而且请求是一个简单的Java POJO与orderId为只有有必要的字段和SETTERS

当我测试API网关时，我看到在我的lambda日志中，订单ID为空。但是，我看到它传递的日志上查询字符串中...这里是

Tue Apr 25 21:57:31 UTC 2017 : Endpoint request body after transformations: {"resource":"/xxxx","path":"/xxxx","httpMethod":"GET","headers":null,"queryStringParameters":{"orderId":"32"},"pathParameters":null,"stageVariables":null,"requestContext":{"accountId":"xxxxxxx","resourceId":"xxxxx","stage":"test-invoke-stage", ... } 

为什么我在我的handler越来越空orderId？

Answer 1

如果您使用AWS_PROXY集成，API网关将忽略您的映射模板。 API网关将以这种格式将参数发送到您的Lambda函数。

{ 
    "message": "Hello me!", 
    "input": { 
     "path": "/test/hello", 
     "headers": { 
      "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 
      "Accept-Encoding": "gzip, deflate, lzma, sdch, br", 
      "Accept-Language": "en-US,en;q=0.8", 
      "CloudFront-Forwarded-Proto": "https", 
      "CloudFront-Is-Desktop-Viewer": "true", 
      "CloudFront-Is-Mobile-Viewer": "false", 
      "CloudFront-Is-SmartTV-Viewer": "false", 
      "CloudFront-Is-Tablet-Viewer": "false", 
      "CloudFront-Viewer-Country": "US", 
      "Host": "wt6mne2s9k.execute-api.us-west-2.amazonaws.com", 
      "Upgrade-Insecure-Requests": "1", 
      "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36 OPR/39.0.2256.48", 
      "Via": "1.1 fb7cca60f0ecd82ce07790c9c5eef16c.cloudfront.net (CloudFront)", 
      "X-Amz-Cf-Id": "nBsWBOrSHMgnaROZJK1wGCZ9PcRcSpq_oSXZNQwQ10OTZL4cimZo3g==", 
      "X-Forwarded-For": "192.168.100.1, 192.168.1.1", 
      "X-Forwarded-Port": "443", 
      "X-Forwarded-Proto": "https" 
     }, 
     "pathParameters": {"proxy": "hello"}, 
     "requestContext": { 
      "accountId": "123456789012", 
      "resourceId": "us4z18", 
      "stage": "test", 
      "requestId": "41b45ea3-70b5-11e6-b7bd-69b5aaebc7d9", 
      "identity": { 
       "cognitoIdentityPoolId": "", 
       "accountId": "", 
       "cognitoIdentityId": "", 
       "caller": "", 
       "apiKey": "", 
       "sourceIp": "192.168.100.1", 
       "cognitoAuthenticationType": "", 
       "cognitoAuthenticationProvider": "", 
       "userArn": "", 
       "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36 OPR/39.0.2256.48", 
       "user": "" 
      }, 
      "resourcePath": "/{proxy+}", 
      "httpMethod": "GET", 
      "apiId": "wt6mne2s9k" 
     }, 
     "resource": "/{proxy+}", 
     "httpMethod": "GET", 
     "queryStringParameters": {"name": "me"}, 
     "stageVariables": {"stageVarName": "stageVarValue"} 
    } 
}