无服务器错误TypeError:无法读取未定义的属性'toLowerCase‘

Question

我试着从serverless部署类似this example的东西。在构建我的serverless.yml时，我遇到了这个错误，我找不到要处理的句柄：

service: products-api

package:
  artifact: target\products-api-dev.jar
  #artifact: target\${self:service}-${self:provider.stage}.jar #cool alternative :)

provider:
  name: aws
  runtime: java8

#Copy-pasted
resources:
  Resources:
    productsTable:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: products_table
        AttributeDefinitions:
          - AttributeName: id
            AttributeType: S
          - AttributeName: name
            AttributeType: S
        KeySchema:
          - AttributeName: id
            KeyType: HASH
          - AttributeName: name
            KeyType: RANGE
        ProvisionedThroughput:
          ReadCapacityUnits: 1
          WriteCapacityUnits: 1

functions:
  listProducts:
    handler: com.serverless.ListProductsHandler
    events:
      - http:
          path: /products
          method: get
  getProduct:
    handler: com.serverless.GetProductHandler
    events:
      - http:
          path: /products/{id}
          method: get
  createProduct:
    handler: com.serverless.CreateProductHandler
    events:
      - http:
          path: /products
          method: post
  deleteProduct:
    handler: com.serverless.DeleteProductHandler
    events:
      - http:
          path: /products/{id}

我得到的错误是这样的--在我自己的代码中没有对错误的引用，这使得我很难找出哪里出了错。我研究了许多Q/A，包括this和this，但它似乎更多的是javascript和typescript的问题，而不是像这里那样的无服务器。

 Type Error ----------------------------------------------

  TypeError: Cannot read property 'toLowerCase' of undefined
      at AwsCompileApigEvents.getHttpMethod (C:\snapshot\serverless\lib\plugins\aws\package\compile\events\apiGateway\lib\validate.js:195:24)
      at C:\snapshot\serverless\lib\plugins\aws\package\compile\events\apiGateway\lib\validate.js:50:30
      at Array.forEach (<anonymous>)
      at C:\snapshot\serverless\lib\plugins\aws\package\compile\events\apiGateway\lib\validate.js:45:37
      at Array.forEach (<anonymous>)
      at AwsCompileApigEvents.validate (C:\snapshot\serverless\lib\plugins\aws\package\compile\events\apiGateway\lib\validate.js:44:55)
      at Object.package:compileEvents [as hook] (C:\snapshot\serverless\lib\plugins\aws\package\compile\events\apiGateway\index.js:318:31)
      at PluginManager.invoke (C:\snapshot\serverless\lib\classes\PluginManager.js:579:20)
      at async PluginManager.spawn (C:\snapshot\serverless\lib\classes\PluginManager.js:601:5)
      at async Object.before:deploy:deploy [as hook] (C:\snapshot\serverless\lib\plugins\deploy.js:60:11)
      at async PluginManager.invoke (C:\snapshot\serverless\lib\classes\PluginManager.js:579:9)
      at async PluginManager.run (C:\snapshot\serverless\lib\classes\PluginManager.js:639:7)
      at async Serverless.run (C:\snapshot\serverless\lib\Serverless.js:452:5)
      at async C:\snapshot\serverless\scripts\serverless.js:751:9
     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

Answer 1

andymac4182有the solution for your problem的想法，而且它实际上非常简单。您必须为每个http元素定义一个方法，对于最后一个元素，缺少以下内容：method: post

更新：

  deleteProduct:
    handler: com.serverless.DeleteProductHandler
    events:
      - http:
          path: /products/{id}
          method: post

Answer 2

Serverless是一个javascript项目，这就是为什么你会看到一个javascript错误。

您的函数之一似乎是HTTP端点，但缺少任何方法。这似乎是错误的原因。

尝试将method: DELETE添加到终结点：

  deleteProduct:
    handler: com.serverless.DeleteProductHandler
    events:
      - http:
          path: /products/{id}
          method: DELETE