Java 无法在DynamoDB上设置独占启动密钥
我正在尝试将独占开始密钥设置为我的请求，以便以后可以使用我的最后一个EvaluatedKey 当我迭代查询结果时，会发生以下异常。在这方面有人能帮我吗 “提供的起始键与范围键谓词不匹配”Java 无法在DynamoDB上设置独占启动密钥,java,amazon-web-services,amazon-dynamodb,aws-sdk,Java,Amazon Web Services,Amazon Dynamodb,Aws Sdk,我正在尝试将独占开始密钥设置为我的请求，以便以后可以使用我的最后一个EvaluatedKey 当我迭代查询结果时，会发生以下异常。在这方面有人能帮我吗 “提供的起始键与范围键谓词不匹配” 如果您正在传递的ExclusiveStartKey表示的行不再出现在dynamodb查询结果中，则可能会发生这种情况 考虑以下情况： Your Primary partition key is named "message_id" Your Primary sort key is named "message
如果您正在传递的ExclusiveStartKey表示的行不再出现在dynamodb查询结果中，则可能会发生这种情况 考虑以下情况： Your Primary partition key is named "message_id" Your Primary sort key is named "message_timestamp" Your ExclusiveStartKey value is: '{"message_id":"3483b80a358cf60decfccc329bd5e72e","message_timestamp":1481114525}' You are using KeyConditionExpression as: Key("message_id").eq("3483b80a358cf60decfccc329bd5e72e") & Key("message_timestamp").gt(1481202107) Since the message_timestamp in KeyConditionExpression is greater than the corresponding value in ExclusiveStartKey, dynamodb will throw the error that you mentioned. 您的主分区密钥名为“message\u id” 您的主排序键名为“message\u timestamp” 您的ExclusiveStartKey值为：“{”message_id:“3483B80A358CF60DECFCC329BD5E72E”，“message_timestamp:“1481114525}” 您使用的KeyConditionExpression为：Key（“message_id”）.eq（“3483b80a358cf60decfcc329bd5e72e”）和Key（“message_timestamp”）.gt（1481202107） 由于KeyConditionExpression中的消息_时间戳大于ExclusiveStartKey中的相应值，dynamodb将抛出您提到的错误。
“提供的起始键与范围键谓词不匹配”意味着DynamoDB无法命中由您的查询条件表示的ExclusiveStateKey项。因此，当您使用queryPage api时，最好在找到最后一项之前不要更改查询条件；最好不要更新分页结果中可能包含的项目
希望这个答案能对其他人有所帮助。我的理解是，如果表中不再包含独占开始键提供的值，则这不是错误。
com.amazonaws.AmazonServiceException: The provided starting key does not match the range key predicate (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: 6EA9NOO079F7VUVV1JP92P05MRVV4KQNSO5AEMVJF66Q9ASUAAJG)
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1389)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:902)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:607)
at com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:376)
at com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:338)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:287)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:1985)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.query(AmazonDynamoDBClient.java:1620)
at com.amazonaws.services.dynamodbv2.document.internal.QueryCollection.firstPage(QueryCollection.java:53)
at com.amazonaws.services.dynamodbv2.document.internal.PageIterator.next(PageIterator.java:45)
at com.amazonaws.services.dynamodbv2.document.internal.PageIterator.next(PageIterator.java:25)
at java.lang.Iterable.forEach(Iterable.java:74)
at com.my.com.services.database.DynamoDatabaseRepository.fetchMessageList(DynamoDatabaseRepository.java:675)
at service.DatabaseServiceTest.accc(DatabaseServiceTest.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:130)