SQS 不能在 .Net 核心中仅发送 quations 消息

Posted 2023-02-25

【中文标题】SQS 不能在 .Net 核心中仅发送 quations 消息

【英文标题】：SQS can't send only qutations messages in .Net core

【发布时间】：2019-07-01 14:25:30

【问题描述】：

我有一些场景需要发送带有正文的消息：

""

当我尝试使用以下代码执行此操作时：

var sqsClient= new AmazonSQSClient(new BasicAWSCredentials("accessKeyId","SecretKey"), new AmazonSQSConfig()

 ServiceURL ="https://sqs.eu-west-1.amazonaws.com/"
);
//obj value is "" and provided from user
var result = sqsClient.SendMessageAsync("queueURL", obj.ToString()).Result;

我明白了：

Amazon.SQS.AmazonSQSException: 请求必须包含参数 邮件正文。 ---> Amazon.Runtime.Internal.HttpErrorResponseException： “Amazon.Runtime.Internal.HttpErrorResponseException”类型的异常 被抛出。在 Amazon.Runtime.HttpWebRequestMessage.d__20.MoveNext() 在 E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler_mobile\HttpRequestMessageFactory.cs:line 539 --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.HttpHandler1.<InvokeAsync>d__91.MoveNext() 在 E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\HttpHandler\HttpHandler.cs:line 175 --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.Unmarshaller.d__31.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Amazon.SQS.Internal.ValidationResponseHandler.<InvokeAsync>d__11.MoveNext() --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.ErrorHandler.d__51.MoveNext() --- End of inner exception stack trace --- at Amazon.Runtime.Internal.HttpErrorResponseExceptionHandler.HandleException(IExecutionContext executionContext, HttpErrorResponseException exception) in E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\HttpErrorResponseExceptionHandler.cs:line 60 at Amazon.Runtime.Internal.ErrorHandler.ProcessException(IExecutionContext executionContext, Exception exception) in E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 212 at Amazon.Runtime.Internal.ErrorHandler.<InvokeAsync>d__51.MoveNext() 在 E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\ErrorHandler\ErrorHandler.cs:line 104 --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.CallbackHandler.d__91.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Amazon.Runtime.Internal.EndpointDiscoveryHandler.<InvokeAsync>d__21.MoveNext() --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 Amazon.Runtime.Internal.EndpointDiscoveryHandler.d__21.MoveNext() in E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\EndpointDiscoveryHandler.cs:line 79 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Amazon.Runtime.Internal.CredentialsRetriever.<InvokeAsync>d__71.MoveNext() 在 E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\CredentialsRetriever.cs:line 98 --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.RetryHandler.d__101.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Amazon.Runtime.Internal.RetryHandler.<InvokeAsync>d__101.MoveNext() 在 E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\RetryHandler\RetryHandler.cs:line 153 --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.CallbackHandler.d__91.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Amazon.Runtime.Internal.CallbackHandler.<InvokeAsync>d__91.MoveNext() --- 从先前抛出异常的位置结束堆栈跟踪 --- 在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 在 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务 任务）在 Amazon.Runtime.Internal.ErrorCallbackHandler.d__51.MoveNext() in E:\JenkinsWorkspaces\v3-trebuchet-release\AWSDotNetPublic\sdk\src\Core\Amazon.Runtime\Pipeline\Handlers\ErrorCallbackHandler.cs:line 58 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Amazon.Runtime.Internal.MetricsHandler.<InvokeAsync>d__11.MoveNext()

但是发送：

" "

效果很好！

是否有任何解决方法可以只发送

""

【参考方案1】：

您说您正在尝试将正文设置为""，但您实际上正在做的是将正文设置为两个" 之间的0 字节空字符串。字符串文字实际上并不包含围绕它的引号。如果 空字符串 是你真正想要发送的，那在 SQS 中是无效的。

消息正文不能为空或 null。

https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-message-attributes.html

但是，如果您实际上是在尝试发送两个字节的 ASCII 0x22 " 引号字符，则这些字符需要出现在您的字符串文字中并且是 escaped。

var result = sqsClient.SendMessageAsync("queueURL", "\"\"").Result;

（请注意，来自 SQS 开发人员指南的引用来自一个主要关注消息属性的页面，但它确实指的是实际的消息正文，而不是消息属性，其内容被称为 Value ，而不是“body”，并且单独提及也不支持空或null。）

【讨论】：

感谢您的提示。我的编译器将值显示为“”，所以我无法猜测这是问题所在，因为就像我收到一个包含值“”的对象并将其转换为字符串