我创建了一个将 hello world 打印到控制台的 aws Lambda 函数
使用类所在的包名称和要调用的方法名称配置 lambda,并将 jar 文件上传到 aws lambda 函数。
当我执行 lambda 时,我得到一个异常,提示找不到类。
消息为
{
"errorMessage": "Class not found: com.coreservice.lambda.Handler",
"errorType": "class java.lang.ClassNotFoundException"
}
无法理解为什么 aws 无法在 jar 中找到类。
下面是项目配置的详细信息
public class Handler implements RequestHandler<SNSEvent, Object> {
@Override
public Object handleRequest(final SNSEvent input, final Context context) {
if (Objects.nonNull(input) && !CollectionUtils.isNullOrEmpty(input.getRecords())) {
context.getLogger().log("Hello World");
context.getLogger().log("queue = "+ SQS_URL);
}
return StringUtils.EMPTY;
}
}
项目pom:
<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.coreservice</groupId>
<artifactId>SNS-SQS-Filter-Lambda</artifactId>
<packaging>jar</packaging>
<version>136.0.0-SNAPSHOT</version>
<name>SNS-SQS-Filter-Lambda</name>
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-events</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.14</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source> <!-- or 1.8 -->
<target>1.8</target> <!-- or 1.8 -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
最佳答案
从以下位置更改 Handler 的 lambda 配置:
com.coreservice.lambda.Handler.handleRequest
到
com.coreservice.lambda.Handler
com.coreservice.lambda.Handler 类必须实现 com.amazonaws.services.lambda.runtime.RequestHandler 接口(interface)。
关于maven - 找不到类 AWS lambda 异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43897465/