Class not found: com.madman.lambda.StreamLambdaHandler: java.lang.ClassNotFoundException

[anudina]

• Framework version:

org.springframework.boot spring-boot-starter-parent 2.2.6.RELEASE * Implementations:Spring Boot 2 * aws-serverless-java-container-springboot2 version: com.amazonaws.serverless aws-serverless-java-container-springboot2 [1.5,)

when I invoke Lambda for Petstore using postman or using test feature in lambda console in

URL invoked:
https://hostnameXXXXXXX/lambda/petstore

AWS I get below error
"START RequestId: 78c5fb37-4f7e-43e9-a9aa-e4266eb5711b Version: $LATEST
Class not found: com.madman.lambda.StreamLambdaHandler: java.lang.ClassNotFoundException
java.lang.ClassNotFoundException: com.madman.lambda.StreamLambdaHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)

END RequestId: 78c5fb37-4f7e-43e9-a9aa-e4266eb5711b"

Expected behavior ; It should work and provide me pets

Actual behavior : throwing error

Steps to reproduce : deploy petstore app for springboot2 in aws lambda and invoke GET operation using ALB trigger or API trigger

Full log output

2020-06-11T00:22:25.310-04:00	START RequestId: 78c5fb37-4f7e-43e9-a9aa-e4266eb5711b Version: $LATEST
	2020-06-11T00:22:25.324-04:00
	2020-06-11T00:22:25.328-04:00
	2020-06-11T00:22:25.328-04:00

[sapessi]

How did you build and package the application?

[softwareguidancechintala]

@sapessi and @anudina

I had the same issue.

I did a "gradle clean build" on aws-serverless-java-container-master\samples\springboot2\pet-store

And then referred "build\libs\pet-store.jar" in the CodeUri attribute of the template.yml

`AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Example Pet Store API written with SpringBoot with the aws-serverless-java-container library

Globals:
Api:
# API Gateway regional endpoints
EndpointConfiguration: REGIONAL

Resources:
PetStoreFunction:
Type: AWS::Serverless::Function
Properties:
Handler: com.amazonaws.serverless.sample.springboot2.StreamLambdaHandler::handleRequest
Runtime: java8
CodeUri: build\libs\pet-store.jar
MemorySize: 1512
Policies: AWSLambdaBasicExecutionRole
Timeout: 60
Events:
HttpApiEvent:
Type: HttpApi
Properties:
TimeoutInMillis: 20000
PayloadFormatVersion: '1.0'

Outputs:
SpringBootPetStoreApi:
Description: URL for application
Value: !Sub 'https://${ServerlessHttpApi}.execute-api.${AWS::Region}.amazonaws.com/pets'
Export:
Name: SpringBootPetStoreApi
`

Once I deployed, I got 502 Bad Gateway while testing the API endpoint.

When I looked into CloudWatch logs, I found

Class not found: com.amazonaws.serverless.sample.springboot2.StreamLambdaHandler: java.lang.ClassNotFoundException
java.lang.ClassNotFoundException: com.amazonaws.serverless.sample.springboot2.StreamLambdaHandler
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)

Can you please advise on this.

Spring boot version: 2.2.6.RELEASE
Gradle : 6.3

[laurentgrangeau]

I have the exact same issue when building and deploying the springboot2 sample application.
Do you have any updates about this problem ?

[SimerSingh]

I am facing same issue , already spent lot of time looking for solution. Anyone solved this?

[ruliyeret]

I have the same issue updates?

[sos418]

In template.yml file:

CodeUri according to maven or gradle setting.

I use maven and change to "./target/my-service-1.0-SNAPSHOT-lambda-package.zip"

[alpasarupria]

Facing the same. can someone give solution to this issue

[deki]

Hi,
there is no need to modify the CodeUri manually.

Just follow the steps as described in the readme: https://github.com/awslabs/aws-serverless-java-container/blob/master/samples/springboot2/pet-store/README.md

I just tried it with master and dev branch and it was working without any issues.

[alpasarupria]

Thank you for your answer. Can you provide me any link where Cloudformation is not used. Is there any way where in I can do through terraform or UI console

[deki]

@alpasarupria you can also do it without SAM and CloudFormation. I'm not a Terraform expert but looking at hashicorp/terraform#8344 Terraform allows to zip AWS Lambda functions on the fly. The documentation is here: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/lambda_function

The UI also supports upload from ZIP https://docs.aws.amazon.com/lambda/latest/dg/gettingstarted-package.html#gettingstarted-package-zip but I would recommend to use some sort of tool support.

[hopewise]

in the root of the project, you need to run:

sam build -u

before you can run:

 sam local start-api

and test in browser:

127.0.0.1:3000/pets

[timhughes]

Leaving a comment for future me. This turned out to be a selinux issue aws/aws-sam-cli#2360