śr., 30 kwi 2025 o 19:47 Ute Kaiser <[email protected]> napisał(a):
>
> Hi,
> I tried according to
> https://struts.apache.org/core-developers/validation
> Customizing validation messages
> XML
>
> This is the example from above:
> <field name="username">
> <field-validator type="requiredstring">
> <message key="errors.required">
> <param name="0">getText('username.field.name')</param>
> </message>
> </field-validator>
> </field>
> errors.required={0} is required.
> username.field.name=Username
> The final output will be as follow:
> Username is required.
>
> Migrating from Struts1 to Struts7, this looked pretty familiar to me.
> I tried
> <field name="myObject.myField">
> <field-validator type="stringlength">
> <param name="maxLength">400</param>
> <message key="error.maxlength">
> <param name="0">getText('myField.label')</param>
> <param name="1">${maxLength}</param>
> </message>
> </field-validator>
> </field>
> error.maxlength='{0}' can not be greater than {1} characters.
> myField.label=myExample
> Output:
> {0} can not be greater than null characters.
> When I use
> error.maxlength={0} can not be greater than {1} characters. (without the ''
> which I want to use to emphasize the field name)
> Output:
> myExample can not be greater than null characters.
>
> I would like to have as output:
> 'myExample' can not be greater than 400 characters.
Not sure if I understood your issue, did you try to use escape char?
error.maxlength=\'{0}\' can not be greater than {1} characters.
> The example from the struts page is for requiredstring.
> Is there an example for stringlength with maxlenght-output?
Take a look here
https://github.com/apache/struts-examples/blob/main/mailreader2/src/main/resources/org/apache/struts/examples/mailreader2/Registration-Registration_save-validation.xml#L9-L14
and error message definition
https://github.com/apache/struts-examples/blob/main/mailreader2/src/main/resources/org/apache/struts/examples/mailreader2/MailreaderSupport.properties#L94
there are also other examples, yet I'm not sure if they are up-to-date
> And where can I find all possible field-validator types?
Here is the list
https://struts.apache.org/core-developers/validation#bundled-validators
Cheers
Łukasz
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