Java Amazon ML应用程序中的AmazonClientException
我参考以下资源创建一个应用程序,使用我已经使用AmazonML训练过的模型进行实时预测 我已经用模型的名称替换了该值,并且已经在AWS ML控制台中创建了一个端点。但是当我执行main函数时,我得到以下异常:Java Amazon ML应用程序中的AmazonClientException,java,amazon-web-services,amazon-machine-learning,Java,Amazon Web Services,Amazon Machine Learning,我参考以下资源创建一个应用程序,使用我已经使用AmazonML训练过的模型进行实时预测 我已经用模型的名称替换了该值,并且已经在AWS ML控制台中创建了一个端点。但是当我执行main函数时,我得到以下异常: Exception in thread "main" com.amazonaws.AmazonClientException: Unable to load AWS credentials from any provider in the chain at com.amazona
Exception in thread "main" com.amazonaws.AmazonClientException: Unable to load AWS credentials from any provider in the chain
at com.amazonaws.auth.AWSCredentialsProviderChain.getCredentials(AWSCredentialsProviderChain.java:117)
at com.amazonaws.services.machinelearning.AmazonMachineLearningClient.invoke(AmazonMachineLearningClient.java:1983)
at com.amazonaws.services.machinelearning.AmazonMachineLearningClient.getMLModel(AmazonMachineLearningClient.java:1585)
at ML.RealtimePredict.lookupEndpoint(RealtimePredict.java:58)
at ML.RealtimePredict.predict(RealtimePredict.java:45)
at ML.RealtimePredict.main(RealtimePredict.java:21)
这是我正在使用的程序(Java):
ML包;
导入java.util.HashMap;
导入java.util.Map;
导入com.amazonaws.services.machinelearning.amazonMachinelearning客户端;
导入com.amazonaws.services.machinelearning.model.*;
公共类实时预测{
公共静态void main(字符串[]args){
字符串mlModelId=“ModelID——我提供了这个”;
RealtimePredict rtp=新的RealtimePredict(mlModelId);
//元数据和元数据示例
字符串元数据=“X1,X2”;
字符串数据=“20,25”;
映射记录=rtp.parseArgs(
metaData.trim().split(“,”),data.trim().split(“,”);
PredictResult响应=rtp.predict(记录);
System.out.println(响应);
}
私有AmazonMachineLearning客户端;
私有字符串mlModelId;
私有字符串端点;
公共实时预测(字符串mlModelId){
client=新AmazonMachineLearningClient();
this.mlModelId=mlModelId;
}
私有映射解析参数(字符串[]元数据,字符串[]数据){
映射记录=新的HashMap();
对于(int i=0;i<(
metaData.length
有人能帮我修一下吗。我想我需要提供访问密钥和安全密钥。但我找不到多少帮助,我如何才能做到这一点。谢谢。Java代码必须具有能够调用AWS服务的凭据。它正在几个位置搜索这些凭证,直到它放弃并打印出上述异常 请阅读有关不同位置的文档以设置这些凭据: 最佳实践是在本地开发中使用默认凭据配置文件,在云中运行实例/容器/Lambda时使用IAM角色
package ML;
import java.util.HashMap;
import java.util.Map;
import com.amazonaws.services.machinelearning.AmazonMachineLearningClient;
import com.amazonaws.services.machinelearning.model.*;
public class RealtimePredict {
public static void main(String[] args) {
String mlModelId = "ModelID--I provided this";
RealtimePredict rtp = new RealtimePredict(mlModelId);
// Example meta-data and data
String metaData = "X1,X2";
String data = "20,25";
Map<String, String> record = rtp.parseArgs(
metaData.trim().split(","), data.trim().split(","));
PredictResult response = rtp.predict(record);
System.out.println(response);
}
private AmazonMachineLearningClient client;
private String mlModelId;
private String predictEndpoint;
public RealtimePredict(String mlModelId) {
client = new AmazonMachineLearningClient();
this.mlModelId = mlModelId;
}
private Map<String, String> parseArgs(String[] metaData, String[] data) {
Map<String, String> record = new HashMap<>();
for (int i = 0; i < (
metaData.length < data.length ? metaData.length : data.length); i++) {
record.put(metaData[i].trim(), data[i].trim());
}
return record;
}
private PredictResult predict(Map<String, String> record) {
lookupEndpoint();
PredictRequest request = new PredictRequest()
.withMLModelId(mlModelId)
.withPredictEndpoint(predictEndpoint)
.withRecord(record);
return client.predict(request);
}
/**
* finds the realtime endpoint for this ML Model
*/
private void lookupEndpoint() {
GetMLModelRequest request = new GetMLModelRequest().withMLModelId(mlModelId);
GetMLModelResult model = client.getMLModel(request);
predictEndpoint = model.getEndpointInfo().getEndpointUrl();
}
}