SQS不能在.net核心只发送qutations消息

Question

我有一些情况下，我需要与体发送消息：

""

当我尝试使用下面的代码要做到：

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;

我得到：

{Amazon.SQS.AmazonSQSException：请求必须包含参数消息体。 ---> Amazon.Runtime.Internal.HttpErrorResponseException：类型Amazon.Runtime.Internal.HttpErrorResponseException'引发的异常。在Amazon.Runtime.HttpWebRequestMessage.d__20.MoveNext（）中E：\ JenkinsWorkspaces \ V3-投石机释放\ AWSDotNetPublic \ SDK \ SRC \核心\ Amazon.Runtime \管道\ HttpHandler_mobile \ HttpRequestMessageFactory.cs：线539 ---完从先前的位置堆栈跟踪，其中引发异常---在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（工作任务）在Amazon.Runtime.Internal.HttpHandler1.<InvokeAsync>d__91.MoveNext（中）在E：\ JenkinsWorkspaces \ v3的投石机释放\ AWSDotNetPublic \ SDK的\ src \核心\ Amazon.Runtime \管道\的HttpHandler \ HttpHandler.cs：行175 ---从先前的位置堆栈跟踪的结束，其中异常被抛出 - - 在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（工作任务）在Amazon.Runtime.Internal.Unmarshaller.d__3

1.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__1

1.MoveNext（）---堆栈跟踪结束从以前的位置其中的例外是在电子商务抛出---在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（工作任务）在Amazon.Runtime.Internal.ErrorHandler.d__5

1.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__5

1.MoveNext（）： \ JenkinsWorkspaces \ V3-投石机释放\ AWSDotNetPublic \ SDK \ SRC \核心\ Amazon.Runtime \管道\的ErrorHandler \ ErrorHandler.cs：线104 ---从先前位置栈跟踪，其中引发异常的末尾在系统.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（工作任务）在Amazon.Runtime.Internal.CallbackHandler.d__9

1.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__2

1.MoveNext（）---从以前的位置，其中异常堆栈跟踪的结尾在电子商务被扔在--- System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在Amazon.Runtime.Internal.EndpointDiscoveryHandler.d__2

1.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__7

1.MoveNext（）：\ JenkinsWorkspaces \ v3的投石机释放\ AWSDotNetPublic \ SDK的\ src \心病È\ Amazon.Runtime \管道\处理程序\ CredentialsRetriever.cs：管线98 ---从先前位置栈跟踪其中抛出异常---在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime结束。 CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务task）在Amazon.Runtime.Internal.RetryHandler.d__10

1.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__10

1.MoveNext（）在E：\ JenkinsWorkspaces \ v3的投石机释放\ AWSDotNetPublic \ SDK的\ src \核心\ Amazon.Runtime \管道\ RetryHandler \ RetryHandler.cs：153行---从先前的位置堆栈跟踪，其中引发异常---在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（工作任务）结束在Amazon.Runtime.Internal.CallbackHandler.d__9

1.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__9

1.MoveNext（）---从以前的位置，其中的例外是在System.Runtime.CompilerServices抛出---在System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw（）堆栈跟踪的结尾。 Ť askAwaiter.HandleNonSuccessAndDebuggerNotification（任务task）在Amazon.Runtime.Internal.ErrorCallbackHandler.d__5

1.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__1

1.MoveNext（）}

但是发送：

" "

效果很好！

是否有任何workarrounds只发送

""

Answer 1

你说你正在尝试设置身体""但你实际上做的是身体设置两个"间的0字节空字符串。字符串文字实际上并不包含它周围的报价。如果空字符串是你真的想送什么，是不是在SQS有效。

邮件正文不能为空或空。

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

但是，如果你确实想发送的ASCII码为0x22 "引号字符两个字节，这些都需要出现，你的字符串字面内部escaped。

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

（注意，从SQS开发人员指南中引用来自于与消息atttibutes主要关注的网页，但它指的是实际的消息体，而不是信息的属性，其内容被称为Value，不是“体”，并且是也如不支持空或无效单独提及。）