Struts2 基于XML校验(易百教程)

以下是的各类字段级和非字段级验证在Struts2列表：

date validator:

<field name="birthday"> <field-validator type="date"> <param name="min">01/01/1990</param> <param name="max">01/01/2000</param> <message> Birthday must be within ${min} and ${max} </message> </field-validator> </field>

double validator:

<field name="percentage"> <field-validator type="double"> <param name="minExclusive">0.123</param> <param name="maxExclusive">99.98</param> <message> Percentage needs to be between ${minExclusive} ${maxExclusive} (exclusive) </message> </field-validator> </field>

email validator:

<field name="myEmail"> <field-validator type="email"> <message> Must provide a valid email </message> </field-validator> </field>

expression validator:

非现场级验证，验证基于正则表达式提供。

<field-validator type="expression"> <param name="expression">....</param> <message> Failed to meet Ognl Expression .... </message> </field-validator>

int validator:

<field name="age"> <field-validator type="int"> <param name="min">5</param> <param name="max">50</param> <message> Age needs to be between ${min} and ${max} </message> </field-validator> </field>

regex validator:

<field name="myStrangePostcode"> <field-validator type="regex"> <param name="fieldName">myStrangePostcode</param> <param name="expression"> <![CDATA[([aAbBcCdD][123][eEfFgG][456])]]> </param> </field-validator> </field>

required validator:

<field name="username"> <field-validator type="required"> <message> username must not be null </message> </field-validator> </field>

requiredstring validator:

<field name="username"> <field-validator type="requiredstring"> <param name="trim">true</param> <message> username must not be null </message> </field-validator> </field>

stringlength validator:

<field name="username"> <field-validator type="stringlength"> <param name="minLength">10</param> <param name="maxLength">10</param> <param name="trim">true</param> <message> Your username needs to be 10 characters long </message> </field-validator> </field>

url validator:

<field-validator type="url"> <param name="fieldName">myHomePageURL</param> <message> Invalid homepage url </message> </field-validator>