Getting issue while running Spring Boot REST service on aws lambda

[Manish-SM]

• Framework version: 2.0
• Implementations: Spring Boot

My Handler:

public class StreamLambdaHandler implements RequestStreamHandler {
    private static Logger logger = LoggerFactory.getLogger(StreamLambdaHandler.class);     

    public static final SpringBootLambdaContainerHandler<AwsProxyRequest, AwsProxyResponse> handler;
 
    static { 
       try { 
           handler = SpringBootLambdaContainerHandler.getAwsProxyHandler(StudentServicesApplication.class);
           handler.activateSpringProfiles("lambda");
      } catch (ContainerInitializationException e) { 
    	   logger.error("Cannot initialize Spring container", e);
           throw new RuntimeException("Could not initialize Spring Boot application", e); 
       } 
    }

    @Override 
    public void handleRequest(InputStream inputStream, OutputStream outputStream, Context context) throws IOException {
        handler.proxyStream(inputStream, outputStream, context);
        // just in case it wasn't closed 
        outputStream.close(); 
    }
}

@ComponentScan("com")
@SpringBootApplication
@EnableWebMvc
@Profile("lambda")
public class StudentServicesApplication extends SpringBootServletInitializer {	public static void main(String[] args) {
		SpringApplication.run(StudentServicesApplication.class, args);
	}
}

POM.XML

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.new</groupId>
	<artifactId>REST-Lambda</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>REST-Lambda</name>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.6.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		
		<dependency>
			<groupId>com.amazonaws.serverless</groupId>
			<artifactId>aws-serverless-java-container-spring</artifactId>
			<version>1.2</version>
		</dependency>	
		
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-lambda-java-core</artifactId>
            <version>1.1.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        
		<dependency>
			<groupId>com.googlecode.json-simple</groupId>
			<artifactId>json-simple</artifactId>
		</dependency>
       
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-shade-plugin</artifactId>
				<configuration>
					<createDependencyReducedPom>false</createDependencyReducedPom>
				</configuration>
				<executions>
					<execution>
						<phase>package</phase>
						<goals>
							<goal>shade</goal>
						</goals>
						<configuration>
							<artifactSet>
								<excludes>
									<exclude>org.apache.tomcat.embed:*</exclude>
								</excludes>
							</artifactSet>
						</configuration>
					</execution>
				</executions>
			</plugin>

 			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<fork>true</fork>
					<executable>C:\Program Files\Java\jdk1.8.0_181\bin\javac</executable>
				</configuration>
			</plugin>
		</plugins>
		<resources>
        	<resource>
            	<directory>src/main/resources</directory>
            	<filtering>true</filtering>
        	</resource>
    	</resources>
	</build>
</project>

Getting this issue :

Error loading class com.lambda.StreamLambdaHandler: java.lang.ExceptionInInitializerError
java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dispatcherServlet' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:685)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1209)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1093)
at com.amazonaws.serverless.proxy.spring.SpringBootLambdaContainerHandler.initialize(SpringBootLambdaContainerHandler.java:183)
at com.amazonaws.serverless.proxy.spring.SpringBootLambdaContainerHandler.getAwsProxyHandler(SpringBootLambdaContainerHandler.java:77)
at com.lambda.StreamLambdaHandler.<clinit>(StreamLambdaHandler.java:27)

[sapessi]

Hi @Manish-SM, does the application work if you use SpringBoot 1.5.17.RELEASE? We have not yet officially added support for SpringBoot 2.x - it is tracked in issue #181.

[Manish-SM]

Hi @sapessi, Thanks for reply. I tried with SpringBoot 1.5.17 version and getting some different error now.
Error:
Error loading class com.lambda.StreamLambdaHandler: java.lang.ExceptionInInitializerError
java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dispatcherServlet' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:687)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1209)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:284)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1086)
at com.amazonaws.serverless.proxy.spring.SpringBootLambdaContainerHandler.initialize(SpringBootLambdaContainerHandler.java:183)
at com.amazonaws.serverless.proxy.spring.SpringBootLambdaContainerHandler.getAwsProxyHandler(SpringBootLambdaContainerHandler.java:77)
at com.lambda.StreamLambdaHandler.(StreamLambdaHandler.java:27)
... 2 more

[sapessi]

Can you remove the spring-boot-starter as a dependency, you should only need the spring-boot-starter-web. Any chance the project code is on GitHub and we can try to replicate?

[Manish-SM]

REST-Lambda.zip
@sapessi, I tried with suggested solution but getting same error. I have uploaded zip file on this path. https://github.com/awslabs/aws-serverless-java-container/files/2520162/REST-Lambda.zip.
Can you please check and suggest? Thanks in advance.

[sapessi]

Remove the @Profile annotation from the StudentServicesApplication class. To load a profile, use the parameters to the getAwsProxyHandler method.

[Manish-SM]

@sapessi, Thanks for your help. It works for me. I made mentioned changes after that deployed and tested with api gateway with JSON body and headers and it worked only with api gateway not with lambda.

[sapessi]

To test this directly in Lambda, you need to make sure you send an event shaped exactly like API Gateway's proxy event.

[sendpramod]

Hi,
what do you mean by "event shaped exactly like API Gateway's proxy event".
I am getting exception while running a springboot2 application on aws but it works fine with sam local.
I have created a apigateway and invoking the lambda function through it

[Cpinto0594]

Hi,
what do you mean by "event shaped exactly like API Gateway's proxy event".

I got the same doubt, does anyone have any example of how to do it?