如何自定义JSF转换消息“必须是一个或多个数字组成的数字"? [英] How to customize JSF conversion message 'must be a number consisting of one or more digits'?

问题描述

我有一个映射到Long属性的输入文本.

I have an input text that is mapped to a Long property.

private Long length;

<h:inputText value="#{bean.length}" />

当我在输入文本中输入非数字时，出现以下转换错误:

When I enter non-digits in that input text, I get the following conversion error:

myForm:myField:"someText"必须是由一个或多个数字组成的数字.

myForm:myField: 'someText' must be a number consisting of one or more digits.

我想知道如何将此消息自定义为:

I was wondering how to customize this message to:

长度必须是大于零的数字.

length must be a number greater than zero.

推荐答案

两者都使用输入组件的converterMessage属性:

Either use the input component's converterMessage attribute:

<h:inputText converterMessage="length must be a number greater than zero" />

(并且不要忘记使用<f:validateLongRange>来防止用户输入负值并提供validatorMessage！)

(and don't forget to use <f:validateLongRange> to prevent users being able to enter negative values and supply a validatorMessage!)

或在类路径中创建一个属性文件，该文件将覆盖内置JSF LongConverter的默认消息:

Or create a properties file in the classpath which overrides the default message of the builtin JSF LongConverter:

javax.faces.converter.LongConverter.LONG = length must be a number greater than zero

，并且已在faces-config.xml中注册为消息束:

and is been registered as message bundle in faces-config.xml:

<application>
    <message-bundle>com.example.CustomMessages</message-bundle>
</application>

上面的示例假定文件名是CustomMessages.properties，并放在com.example程序包中.您可以将其命名并放置在任意位置.

The above example assumes that the file name is CustomMessages.properties and is been placed in com.example package. You can name and place it wherever you want.

您可以在javax.faces.converter.LongConverter.LONG)及其默认值的概述. "rel =" nofollow noreferrer> JSF规范，该规范也复制粘贴在

You can find an overview of all message keys like javax.faces.converter.LongConverter.LONG and their default values in chapter 2.5.2.4 of the JSF specification which is also copypasted in this answer.

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