使用CFPOP的Java转换错误

Question

我在Windows服务器上运行的CF9应用程序弹出邮件。当我尝试检索整个邮件正文时，我有时会收到以下错误...

Error:
An exception occurred while retrieving mail. 
The cause of this exception was: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart.

Location:
Line 335 in controllers\Submissions.cfc

不确定这是否相关，但是每条消息都会附加图片，整个过程 通常 正常工作。这个问题是间歇性的。

我的问题

1. 知道是什么原因造成的吗？
2. 知道如何捕获并解决此问题吗？

我怀疑我需要下载到java，但不知道从哪里开始。

代码片段

<cfscript>
// setup variables array for all cfpop calls
CFPopAttributes = {
    server = request.pop.server,
    port = request.pop.port,
    username = request.pop.username,
    password = request.pop.password,
    timeout = 300
    };
</cfscript>


<cfpop
    action="getall"
    name="entireEmail"
    uid="#uid#"
    attachmentpath="#originalsPath#"
    attributecollection="#CFPopAttributes#" // Line 335
    generateuniquefilenames="true"
    />  

注意：我在上面添加了注释“Line 335”，以准确地传达模板中断的代码。如果我向上或向下移动attributecollection（在其他属性之前/之后），则错误总是在attributecollection行处中断。

堆栈跟踪

struct [Filtered - 1 of 8 keys hidden]

Detail: An exception occurred while invoking an event handler method from Application.cfc. The method name is: onRequest.
Message: Event handler exception.
RootCause:  
    [struct]
    Detail: The cause of this exception was: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart.
    Message: An exception occurred while retrieving mail.
    RootCause:  
        [struct]
        Message: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart
        StackTrace: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart
            at coldfusion.mail.EmailTable.getAttachmentName(EmailTable.java:819)
            at coldfusion.mail.EmailTable.populate(EmailTable.java:283)
            at coldfusion.mail.PopImpl.getMails(PopImpl.java:241)
            at coldfusion.tagext.net.PopTag$1.run(PopTag.java:433)
            at java.security.AccessController.doPrivileged(Native Method)
            at coldfusion.tagext.net.PopTag.doStartTag(PopTag.java:429)
            at coldfusion.runtime.CfJspPage._emptyTcfTag(CfJspPage.java:2799)
            at cfSubmissions2ecfc1952269377$funcGETEMAIL.runFunction(D:\home\wwwroot\controllers\Submissions.cfc:335)