How can I preserve the assign order in a structure in ColdFusion <2016

问题

ColdFusion doesn't preserve the order in which elements were assigned to the structure.
This gives a problem when, in my particular case, I need to create a SOAP envelope from this structure and the receiver needs to data in the envelope in a particular order.
Starting from ColdFusion 2016 and higher, there is a "type" option in the StructNew() method where you can specify "Ordered". Unfortunately, I'm still on CF9.02... For example (in CF9):

<cfscript>
       myStruct=StructNew();
       myStruct.one=StructNew();
       myStruct.one.item1="Old Trafford";
       myStruct.one.item2="Anfield";
       myStruct.two=StructNew();
       myStruct.two.item3="Stamford Bridge";
       myStruct.two.item4="Villa Park";
       myStruct.three=StructNew();
       myStruct.three.item5="St James Park";
       myStruct.three.item6="Emirates Stadium";
       WriteDump(myStruct);
</cfscript>

Output:

{"ONE":{"ITEM2":"Anfield","ITEM1":"Old Trafford"},"THREE":{"ITEM6":"Emirates Stadium","ITEM5":"St James Park"},"TWO":{"ITEM4":"Villa Park","ITEM3":"Stamford Bridge"}}

As you can see, the order is scrambled.

A second problem is the UPPERCASE. All the items are transformed to uppercase...
This is a problem for a SOAP envelope, because it is case sensitive.

回答1:

1. Order.
   The solution is to use a java LinkedHashMap which can be used just like a structure in ColdFusion.
   So, I just need to replace StructNew();
   with: createObject("java", "java.util.LinkedHashMap").init();

2. Uppercase:
   Assign/address them though their string name. This will preserve the case.

So, the example becomes:

<cfscript>
       myStruct=createObject("java", "java.util.LinkedHashMap").init();
       myStruct['one']=createObject("java", "java.util.LinkedHashMap").init();
       myStruct['one']['item1']="Old Trafford";
       myStruct['one']['item2']="Anfield";
       myStruct['two']=createObject("java", "java.util.LinkedHashMap").init();
       myStruct['two']['item3']="Stamford Bridge";
       myStruct['two']['item4']="Villa Park";
       myStruct['three']=createObject("java", "java.util.LinkedHashMap").init();
       myStruct['three']['item5']="St James Park";
       myStruct['three']['item6']="Emirates Stadium";
       WriteDump(SerializeJSON(myStruct));
</cfscript>

Output:

{"one":{"item1":"Old Trafford","item2":"Anfield"},"two":{"item3":"Stamford Bridge","item4":"Villa Park"},"three":{"item5":"St James Park","item6":"Emirates Stadium"}}

Nicely ordered and case preserved!

来源：https://stackoverflow.com/questions/60071784/how-can-i-preserve-the-assign-order-in-a-structure-in-coldfusion-2016