blocks|key|1627681|text|这很可能是因为您的CFC代码不是线程安全的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1627682|这是：|1627683|<cfset+variables+=+arguments>|code-block|syntax|javascript|1627684|将函数的参数复制到对象的共享范围中。如果downloader对象是跨请求共享的，那么每个请求都将使用另一个请求的值。|offset|length|style|CODE|1627685|为什么要将参数复制到对象变量范围中？这似乎是件很奇怪的事。|1627686|entityMap^0|0|0|0|K|A|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

It's likely because your CFC code is not thread-safe.

This:

<pre><code>&lt;cfset variables = arguments&gt;
</code></pre>

Copies your function's arguments into the object's shared scope. If the <code>downloader</code> object is shared across requests, then each request is going to be using the other one's values.

Why are you copying your arguments into the objects variables scope? That seems like an odd thing to do.

blocks|key|4451068|text|将group_num作为属性传入，这样您就可以在内部访问它，而不会出现被覆盖的变量作用域的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4451069|<cfthread+action="RUN"+name="download_#arguments.client_id#_#arguments.group_num#"+priority="high"+group_num="#arguments.group_num#">
++++<cffile+action="WRITE"+file="#expandpath('download\download_in_process\')##attributes.group_num#.json"+output="#attributes.group_num#">+++++++++++
</cfthread>|code-block|syntax|javascript|4451070|其他人都是对的，问题是你的变量范围。正在发生的情况是，每个循环都覆盖变量范围，所以当创建线程时，它从变量作用域获得线程名，该变量范围已经设置为3.因此，所有三个线程都可能尝试将其设置为相同的名称。|4451071|你能用参数来命名它吗？如果不是..。你可以用当地的。获取名称，并将信息传递到CFThread创建中。|4451072|您对于组件内部的情况是正确的，您不能访问参数等等，这些参数的行为与组件外部的行为非常不同。|4451073|Ben写了一篇关于这些问题的好文章，http://www.bennadel.com/blog/2215-an-experiment-in-passing-variables-into-a-cfthread-tag-by-reference.htm|offset|length|4451074|本和往常一样赢了。|4451075|entityMap|0|LINK|mutability|MUTABLE|url|http://www.bennadel.com/blog/2215-an-experiment-in-passing-variables-into-a-cfthread-tag-by-reference.htm^0|0|0|0|0|0|I|2X|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$O|16|P|17|1|18]]|A|$]]|$1|Q|3|R|5|6|7|19|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

Pass the group_num in as an attribute so you can access it internally without having issues with the variables scope being overwritten.

<pre><code>&lt;cfthread action="RUN" name="download_#arguments.client_id#_#arguments.group_num#" priority="high" group_num="#arguments.group_num#"&gt;
 &lt;cffile action="WRITE" file="#expandpath('download\download_in_process\')##attributes.group_num#.json" output="#attributes.group_num#"&gt; 
&lt;/cfthread&gt;
</code></pre>

Everyone else is right, the issue is your variables scope. 
What is happening is each loop is overwriting the variables scope, so when the thread is being created, it getting the thread name from variable scope, which is already set to 3... so all three threads might try and be set to the same name.

Can you name it using arguments? If not... you could use local. for the name and passing the info into the CFThread Creation.

You are correct about inside a component, you cannot access arguments etc, which behaves very differently from outside of a component.

Ben Nadel wrote a nice post about these issues
<a href="http://www.bennadel.com/blog/2215-an-experiment-in-passing-variables-into-a-cfthread-tag-by-reference.htm" rel="nofollow">http://www.bennadel.com/blog/2215-an-experiment-in-passing-variables-into-a-cfthread-tag-by-reference.htm</a> 

Ben for the Win as usual.

I have a loop that calls a cfcomponent object. 

<pre><code> &lt;cfset queue_list = "1,2,3"&gt; 
 &lt;cfloop list="#queue_list#" index="z"&gt; 
 &lt;cfset args = StructNew()&gt;
 &lt;cfset args.group_num = z&gt; 
&lt;cfset args.client_id = 1&gt; 
 &lt;cfset processdownloads = downloader.ProcessDownload(argumentCollection=args)&gt;
 &lt;/cfloop&gt;
</code></pre>

The component has the following function:

<pre><code> &lt;cffunction name="ProcessDownload" access="public" output="false"&gt;
 &lt;cfargument name="group_num" type="numeric" required="yes"&gt; 
 &lt;cfargument name="client_id" type="numeric" required="yes"&gt; 

 &lt;cfset variables = arguments&gt;

 &lt;cfthread action="RUN" name="download_#variables.client_id#_#variables.group_num#" priority="high"&gt;

 &lt;cffile action="WRITE" file="#expandpath('download\download_in_process\')##variables.group_num#.json" output="#variables.group_num#"&gt; 

&lt;/cfthread&gt;

&lt;/cffunction&gt;
</code></pre>

When I run it I receive the following error:

Attribute validation error for the cfthread tag. Thread with name DOWNLOAD_4003_3 could not be created. Thread names must be unique within a page. The error occurred on line 29. 

I have no idea why but it seems to be running twice. Should it not be generating a new thread with a unique thread name, thus avoiding the tread name conflict?

CFTHREAD Executing Twice

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个调用cfcomponent对象的循环。 <cfset queue_list = "1,2,3"> <cfloop list="#queue_list#" index="z"> <cfset args = StructNew()> ...

问CFTHREAD执行两次
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问CFTHREAD执行两次EN