How can I prevent SerializeJSON from changing Yes/No/True/False strings to boolean?

Question

I have a data struct being stored in JSON format, converted using the serializeJSON function. The problem I am running into is that strings that can be boolean in CF such as

Answer 1

I know this answer would not have worked when the question was asked, but as this seems to be the one that people are finding when researching this issue, I thought it would be good to update with a new fix.

For those on CF2016, Adobe has implemented a new function to help fix this issue. This would be preferable to adding a space to the front of strings, though that would still need to be the work around for releases before CF2016 as described by Sergii.

For Structs in CF2016:

Use the struct function, setMetadata, to specify the metadata.

The metadata is a struct where each key is struct key and the value of each key specifies the information on how to serialize in JSON.

The value of the key can be a string or a struct.

Value as string

metadata = {firstname: "string"}};

Value as struct

metadata = {firstname: {type: "string"}};

Example:

       example = structnew();
       example.firstname = "Yes";
       example.lastname = "Man";
       // changing the default serialization by specifying the type of "firstname" as string
       metadata = {firstname: {type:"string"}};
       example.setMetadata(metadata);
       writeoutput(SerializeJSON(example));

For Queries in CF11+: Adobe reports that they've fixed this issue.