Special Characters

Tags

The Apache Freemarker uses the HTML output format by default. In some cases, special characters placed within the MessageML must be HTML-escaped, otherwise, the request sending the MessageML will receive a 400 error response. The following are examples of valid HTML-escaping:

Character

HTML escaping

Required escaping

messageML example

<

Yes

<messageML><</messageML>

&

Yes

<messageML>& </messageML>

$

Yes The $ character only needs to be escaped if it comes before the { character.

<messageML>${}</messageML>

#

Yes The # character only needs to be escaped if it comes before the { character.

<messageML>#{}</messageML>

>

<messageML>></messageML>

"

<messageML>"</messageML>

'

<messageML>'</messageML>

*

<messageML>*</messageML>

%

<messageML>%</messageML>

Examples

Here after you can find an example of a message sent by a bot and containing these special characters as well as the structure of the messageML sent:

<messageML>
    These are special characters:
    <ul>
        <li>&lt;;</li>
        <li>&#38;;</li>
        <li>$ or &#36;;</li>
        <li># or &#35;;</li>
        <li>> or &gt;;</li>
        <li>" or &quot;;</li>
        <li>' or &#39;;</li>
        <li>* or &#42;;</li>
        <li>% or &#37;.</li>
    </ul>
</messageML>

Last updated 2 years ago

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