Question

我创造了＆amp;在API网关中部署了一个简单的GET API，这里是ARN，在此功能上没有任何身份验证，我可以在浏览器上调用它

arn:aws:lambda:ap-southeast-1:XXXXXXXXXXXXXX:function:La

可以使用浏览器浏览的公共网址是：

https://xxxxxxxxx.execute-api.ap-southeast-1.amazonaws.com/v1/lambda/geta

我正在使用Spring启动项目和以下代码来调用API（关注this Doc）

作为lambda服务的接口

package com.xxxxxxx.services.interfaces;

import com.amazonaws.services.lambda.invoke.LambdaFunction;

public interface ILambdaGetBalance {

    @LambdaFunction(functionName="La")
        String getA();
    }

使用该接口调用lambda函数的服务

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import com.xxxxxxxx.services.interfaces.ILambdaGetBalance;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.lambda.AWSLambda;
import com.amazonaws.services.lambda.AWSLambdaClientBuilder;
import com.amazonaws.services.lambda.invoke.LambdaInvokerFactory;

@Service
public class LambdaService {

    @Value("${aws.access-key}")
    private String accessKey; 

    @Value("${aws.secret-key}")
    private String secretKey;

    @Value("${aws.lambda.region-name}") // this is ap-southeast-1
    private String regionName;

    public void test() {
        AWSCredentials credentials = new BasicAWSCredentials(accessKey,
                secretKey); 
        AWSLambda client = AWSLambdaClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(credentials))
                .withRegion(regionName)
                .build();

        final ILambdaGetBalance getBalance = LambdaInvokerFactory.builder()
                .lambdaClient(client)
                .build(ILambdaGetBalance.class);

        getBalance.getA();
    }
}

调用getA函数后，系统将通过以下异常：

java.lang.NoSuchMethodError: com.amazonaws.services.lambda.AWSLambdaClient.beforeClientExecution(Lcom/amazonaws/AmazonWebServiceRequest;)Lcom/amazonaws/AmazonWebServiceRequest;

知道为什么会这样吗？我错过了什么？

Answer 1

您的aws-java-sdk-lambda和aws-java-sdk-core模块看起来可能有不兼容的版本。您如何解决项目的依赖关系？ beforeClientExecution方法已添加到AmazonWebServiceClient版本1.11.106中的aws-java-sdk-core基类 - 请参阅此处：https://github.com/aws/aws-sdk-java/blame/master/aws-java-sdk-core/src/main/java/com/amazonaws/AmazonWebServiceClient.java#L590

使用AWS Sdk调用AWS Lambda时的NoSuchMethod

1 个答案: