Question

struts2中如何对double类型进行输入验证？

<field-validator type="double">
<param name="min">0.0</param>
<param name="max">9999.99</param>
<message>price must be between ${min}and ${max}!</message>
</field-validator>这样行吗？

Answer 1

你这里定义了一个非字段校验器，但是你没有指明你要用到哪个变量上面去啊。。。这样肯定不能生效的啦。。。需要加入<field>元素。。。

Answer 2

<!-- 非字段校验 -->
<validator type="double">
<param name="fidleName">field</param>
<param name="minExclusive">0.1</param>
<param name="maxExclusive">10.1</param>
<message>输入浮点无效</message>
</validator>
<!-- 字段校验 -->
<field name="field">
<field-validator type="double">
<param name="minExclusive">0.1</param>
<param name="maxExclusive">10.1</param>
<message>输入浮点无效</message>
</field-validator>
</field>