【发布时间】：2017-09-10 08:06:25
【问题描述】：
我在 API Gateway 中创建并部署了一个简单的 GET API，这里是 ARN，这个函数没有任何身份验证，我可以简单地在我的浏览器上调用它
arn:aws:lambda:ap-southeast-1:XXXXXXXXXXXXXX:function:La
并且可以使用浏览器浏览的公共url是：
https://xxxxxxxxx.execute-api.ap-southeast-1.amazonaws.com/v1/lambda/geta
我正在使用 Spring Boot 项目和下面的代码来调用 API（遵循 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函数后系统会出现如下异常：
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？
【问题讨论】：
标签： java amazon-web-services aws-lambda aws-sdk aws-java-sdk