Struts2字段校验和非字段校验

最新推荐文章于 2022-06-01 09:12:15 发布

ospanpan0

最新推荐文章于 2022-06-01 09:12:15 发布

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本文链接：https://blog.youkuaiyun.com/ospanpan0/article/details/10745913

本文介绍Struts框架中字段级和非字段级的数据验证方法，通过XML配置文件实现对用户名和密码的必填及长度限制验证。

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字段校验，例子：

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

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN"
"http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">

<validators>
<field name="username">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message key="user.required"/>
</field-validator>
</field>

<field name="password">
<field-validator type="requiredstring" short-circuit="true">
<param name="trim">true</param>
<message key="pass.required"/>
</field-validator>

<field-validator type="stringlength">
<param name="trim">true</param>
<param name="minLength">6</param>
<param name="maxLength">12</param>
<message>password should be between ${minLength} and ${maxLength}</message>
</field-validator>
</field>

</validators>

非字段校验，例子：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN"
"http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">

<validators>
<validator type="required">
<param name="fieldName">username</param>
<param name="trim">true</param>
<message>error!</message>
</validator>
</validators>