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AWS DynamoDBを初めて使用し、EC2インスタンスで動作しているときに問題が発生しています。私はAWSの例を見直し、簡単なJava CRUDの例を見つけました。私は、Eclipse Java Spring BootとAWS DynamoDBをクラウド上で実行して、非常に素早く作業しています。私は静的なアクセス資格情報を使用して私のデスクトップ上でそれを走らせた私は、applications.propertiesページの "cloud.aws.region.static = us-west-2"に含める必要がありました。 AWSクラウドベースのDynamoDBサービスに問題なくアクセスしました。私は "cloud.aws.region.static = us-west-2"をコメントアウトし、EC2インスタンス上で全く同じJava Spring-Bootマイクロサービスを実行しました。いくつかのエラーがありますが、すべてDynamoDB資格プロバイダチェーンにアクセスできないことが指摘されています。静的な資格情報はセキュリティ上の理由から推奨される方法ではありませんが、なぜこれが機能していないのか分かりません。何か案は？AWS EC2は静的アクセス資格を使用してDynamoDBに接続しません
アプリケーションコード：
ここpackage com.belcan;
import java.util.HashMap;
import java.util.Map;
import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.model.AttributeDefinition;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.ComparisonOperator;
import com.amazonaws.services.dynamodbv2.model.Condition;
import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
import com.amazonaws.services.dynamodbv2.model.DescribeTableRequest;
import com.amazonaws.services.dynamodbv2.model.KeySchemaElement;
import com.amazonaws.services.dynamodbv2.model.KeyType;
import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
import com.amazonaws.services.dynamodbv2.model.PutItemRequest;
import com.amazonaws.services.dynamodbv2.model.PutItemResult;
import com.amazonaws.services.dynamodbv2.model.ScalarAttributeType;
import com.amazonaws.services.dynamodbv2.model.ScanRequest;
import com.amazonaws.services.dynamodbv2.model.ScanResult;
import com.amazonaws.services.dynamodbv2.model.TableDescription;
import com.amazonaws.services.dynamodbv2.util.TableUtils;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DynamoDbExampleWarApplication {
static String awsaccesskeyid = "bla-bla-bal";
static String awssecretkey = "yadi-yadi-yada";
static AmazonDynamoDB dynamoDB;
public static void init() {
try {
BasicAWSCredentials myCredentials = new BasicAWSCredentials(awsaccesskeyid, awssecretkey);
dynamoDB = AmazonDynamoDBClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(myCredentials))
.withRegion("us-west-2")
.build();
} catch (Exception e) {
throw new AmazonClientException(
"Init1(): Cannot load the credentials from the credential profiles file. " + toString.e);
}
}
public static void main(String[] args) {
SpringApplication.run(DynamoDbExampleWarApplication.class, args);
// Get Amazon DynamoDB Client
init();
try {
String tableName = "my-favorite-movies-table";
// Create a table with a primary hash key named 'name', which holds a string
CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(tableName)
.withKeySchema(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH))
.withAttributeDefinitions(new AttributeDefinition().withAttributeName("name").withAttributeType(ScalarAttributeType.S))
.withProvisionedThroughput(new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L));
// Create table if it does not exist yet
TableUtils.createTableIfNotExists(dynamoDB, createTableRequest);
// wait for the table to move into ACTIVE state
try {
TableUtils.waitUntilActive(dynamoDB, tableName);
} catch (Exception e) {
System.out.println("Table Error");
}
// Describe our new table
DescribeTableRequest describeTableRequest = new DescribeTableRequest().withTableName(tableName);
TableDescription tableDescription = dynamoDB.describeTable(describeTableRequest).getTable();
System.out.println("Table Description: " + tableDescription);
// Add an item
Map<String, AttributeValue> item = newItem("Bill & Ted's Excellent Adventure", 1989, "****", "James", "Sara");
PutItemRequest putItemRequest = new PutItemRequest(tableName, item);
PutItemResult putItemResult = dynamoDB.putItem(putItemRequest);
System.out.println("Result: " + putItemResult);
// Add another item
item = newItem("Airplane", 1980, "*****", "James", "Billy Bob");
putItemRequest = new PutItemRequest(tableName, item);
putItemResult = dynamoDB.putItem(putItemRequest);
System.out.println("Result: " + putItemResult);
// Scan items for movies with a year attribute greater than 1985
HashMap<String, Condition> scanFilter = new HashMap<String, Condition>();
Condition condition = new Condition()
.withComparisonOperator(ComparisonOperator.GT.toString())
.withAttributeValueList(new AttributeValue().withN("1985"));
scanFilter.put("year", condition);
ScanRequest scanRequest = new ScanRequest(tableName).withScanFilter(scanFilter);
ScanResult scanResult = dynamoDB.scan(scanRequest);
System.out.println("Result: " + scanResult);
} catch (AmazonServiceException ase) {
System.out.println("Caught an AmazonServiceException, which means your request made it "
+ "to AWS, but was rejected with an error response for some reason.");
System.out.println("Error Message: " + ase.getMessage());
System.out.println("HTTP Status Code: " + ase.getStatusCode());
System.out.println("AWS Error Code: " + ase.getErrorCode());
System.out.println("Error Type: " + ase.getErrorType());
System.out.println("Request ID: " + ase.getRequestId());
} catch (AmazonClientException ace) {
System.out.println("Caught an AmazonClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with AWS, "
+ "such as not being able to access the network.");
System.out.println("Error Message: " + ace.getMessage());
}
}
public static Map<String, AttributeValue> newItem(String name, int year, String rating, String... fans) {
Map<String, AttributeValue> item = new HashMap<String, AttributeValue>();
item.put("name", new AttributeValue(name));
item.put("year", new AttributeValue().withN(Integer.toString(year)));
item.put("rating", new AttributeValue(rating));
item.put("fans", new AttributeValue().withSS(fans));
return item;
}
}
EC2のLinuxエラー文字列がある、
[[email protected] server]$ java -jar DynamoDBExample-war-v001.war
. ____ _ __ _ _
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ))))
' |____| .__|_| |_|_| |_\__, |////
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.9.RELEASE)
....Deleted a lot of messages to try to keep the message length as short as possible.
2017-12-20 15:03:32.187 INFO 7372 --- [ main] c.belcan.DynamoDbExampleWarApplication : Starting DynamoDbExampleWarApplication on ip-10-0-0-244 with PID 7372 (/home/ec2-user/server/DynamoDBExample-war-v001.war started by ec2-user in /home/ec2-user/server)
2017-12-20 15:03:32.190 INFO 7372 --- [ main] c.belcan.DynamoDbExampleWarApplication : No active profile set, falling back to default profiles: default
2017-12-20 15:03:32.243 INFO 7372 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot[email protected]30946e09: startup date [Wed Dec 20 15:03:32 UTC 2017]; root of context hierarchy
2017-12-20 15:03:34.568 INFO 7372 --- [ main] o.s.aop.framework.CglibAopProxy : Final method [protected final com.amazonaws.services.s3.model.InitiateMultipartUploadRequest com.amazonaws.services.s3.AmazonS3Client.newInitiateMultipartUploadRequest(com.amazonaws.services.s3.model.UploadObjectRequest)] cannot get proxied via CGLIB: Calls to this method will NOT be routed to the target instance and might lead to
2017-12-20 15:03:36.530 INFO 7372 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot[email protected]30946e09: startup date [Wed Dec 20 15:03:32 UTC 2017]; root of context hierarchy
2017-12-20 15:03:36.616 INFO 7372 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-12-20 15:03:36.618 INFO 7372 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-12-20 15:03:36.657 INFO 7372 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-12-20 15:03:36.657 INFO 7372 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-12-20 15:03:36.707 INFO 7372 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-12-20 15:03:36.951 INFO 7372 --- [ main] b.a.s.AuthenticationManagerConfiguration :
Using default security password: 1cadad8f-e5f6-44ed-a2fd-6df59c36010a
2017-12-20 15:03:37.008 INFO 7372 --- [ main] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: OrRequestMatcher [requestMatchers=[Ant [pattern='/css/**'], Ant [pattern='/js/**'], Ant [pattern='/images/**'], Ant [pattern='/webjars/**'], Ant [pattern='/**/favicon.ico'], Ant [pattern='/error']]], []
2017-12-20 15:03:37.287 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/dump || /dump.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.289 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/metrics/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)
2017-12-20 15:03:37.290 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/metrics || /metrics.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.290 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/configprops || /configprops.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.291 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/health || /health.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.HealthMvcEndpoint.invoke(javax.servlet.http.HttpServletRequest,java.security.Principal)
2017-12-20 15:03:37.292 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/beans || /beans.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.294 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/auditevents || /auditevents.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public org.springframework.http.ResponseEntity<?> org.springframework.boot.actuate.endpoint.mvc.AuditEventsMvcEndpoint.findByPrincipalAndAfterAndType(java.lang.String,java.util.Date,java.lang.String)
2017-12-20 15:03:37.297 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/autoconfig || /autoconfig.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.300 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/loggers/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.LoggersMvcEndpoint.get(java.lang.String)
2017-12-20 15:03:37.300 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/loggers/{name:.*}],methods=[POST],consumes=[application/vnd.spring-boot.actuator.v1+json || application/json],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.LoggersMvcEndpoint.set(java.lang.String,java.util.Map<java.lang.String, java.lang.String>)
2017-12-20 15:03:37.301 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/loggers || /loggers.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.301 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/heapdump || /heapdump.json],methods=[GET],produces=[application/octet-stream]}" onto public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException
2017-12-20 15:03:37.302 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/trace || /trace.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.303 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/mappings || /mappings.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.310 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/info || /info.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.313 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/env/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EnvironmentMvcEndpoint.value(java.lang.String)
2017-12-20 15:03:37.313 INFO 7372 --- [ main] o.s.b.a.e.mvc.EndpointHandlerMapping : Mapped "{[/env || /env.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-12-20 15:03:37.314 INFO 7372 --- [ main] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: org.springframework.boot.actuate.autoconfigure.Manage[email protected]5b94b04d, [org.springframework.secu[email protected]8c3b9d, org.spring[email protected]682b2fa, [email protected]59f, [email protected], org.[email protected]477b4cdf, org.springfram[email protected]3c9754d8, org.sp[email protected]7dcf94f8, org.springframework.[email protected]662ac478, org.springfram[email protected]f79e, o[email protected]6989da5e, org[email protected]6a78afa0, org.springfr[email protected]6ed3ccb2]
2017-12-20 15:03:37.317 INFO 7372 --- [ main] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: OrRequestMatcher [requestMatchers=[Ant [pattern='/**']]], [org.springframework.secu[email protected]3af9c5b7, org.spring[email protected]445b295b, [email protected]400, org.[email protected]757277dc, org.springfram[email protected]687e99d8, org.sp[email protected]49e5f737, org.springframework.[email protected]5c671d7f, org.springfram[email protected]37271612, o[email protected]1757cd72, org[email protected]561b6512, org.springfr[email protected]10aa41f2]
2017-12-20 15:03:37.555 WARN 7372 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cloud.aws.core.env.ResourceIdResolver.BEAN_NAME': Invocation of init method failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stackResourceRegistryFactoryBean' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration$StackAutoDetectConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.aws.core.env.stack.config.StackResourceRegistryFactoryBean]: Factory method 'stackResourceRegistryFactoryBean' threw exception; nested exception is com.amazonaws.SdkClientException: Unable to load AWS credentials from any provider in the chain
2017-12-20 15:03:37.556 INFO 7372 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
2017-12-20 15:03:37.560 INFO 7372 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2017-12-20 15:03:38.079 INFO 7372 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-12-20 15:03:38.086 ERROR 7372 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cloud.aws.core.env.ResourceIdResolver.BEAN_NAME': Invocation of init method failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stackResourceRegistryFactoryBean' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration$StackAutoDetectConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.aws.core.env.stack.config.StackResourceRegistryFactoryBean]: Factory method 'stackResourceRegistryFactoryBean' threw exception; nested exception is com.amazonaws.SdkClientException: Unable to load AWS credentials from any provider in the chain
...Lot more lines of error messages but I think you get the picture...
[[email protected] server]$
これは素晴らしいです。この問題は多くのエラーを投げかけ、私はorg.springframework.cloud.aws ...例外を拾わなかった。私は依存関係のセクション "compile（ 'org.springframework.cloud:spring-cloud-starter-aws'）でコメントしましたが、うまくいきました。内部の秘密は、これのような類似のものを将来捕まえるために私の道を渡すことができますか？ – skmansfield
Hey Mark、DynamoDB SDKが非常にうまく設計されていないと感じています。それは私ですか、あるいはあなたに似たような経験をしていますか？私は昨年MongoDBを使用しており、DynamoDBを試してみると思いました。 MongoDB SDKは無限に使いやすくなっています。あなたの考え？ – skmansfield