Struts2验证框架

<?xml version="1.0" encoding="UTF-8"?>

  <!DOCTYPE validators PUBLIC

       "-//Apache Struts//XWork Validator 1.0.3//EN"

       "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">

<validators>

    <!-- 用户名必须输入 -->

    <field name="user.username">

       <field-validator type="requiredstring">

           <message>请输入用户名</message>

       </field-validator>

    </field>

    <!-- 密码必须输入 -->

    <field name="user.password">

       <field-validator type="requiredstring">

           <message>请输入密码</message>

       </field-validator>

    </field>

    <!-- 年龄最小18岁 -->

    <field name="user.age">

       <field-validator type="int">

           <param name="min">18</param>

           <message>年龄必须在18岁以上,你输入的是：${user.age}</message>

       </field-validator>

    </field>

</validators>

 

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