Struts2 框架验证-蒲公英云

Struts2 框架验证

一、对于输入校验struts2提供了两种实现方法：
1、采用手工编写代码实现。
2、基于XML配置方式实现。
注意：配置验证文件ActionName-alias-validation.xml(常用)
使用基于XML配置方式实现输入校验时，Action也需要继承ActionSupport ，并且提供校验文件和action类放在同一个包下，
ActionName是action的类名; alias是表单提交的action名; validation是固定写法

二、具体的步骤：

1、编写数据输入页面

<style type="text/css">
span {
    color: red;
    font-size: 12px;
}
</style>
</head>
<body>
    <!-- 错误提示 -->
<!--     <s:fielderror></s:fielderror> -->
    <h3>使用RegisterAction-alia-validation.xml进行验证</h3>
    <s:form action="reg2" method="post" namespace="/">
        用户名：<s:textfield name="user.username" />
          <span>${fieldErrors['user.username'][0] }</span>
        <br />
        密    码：<s:password name="user.password" />
            <span>${fieldErrors['user.password'][0] }</span>
        <br />
        年    龄：<s:textfield name="user.age" />
        <span>${fieldErrors['user.age'][0] }</span>
        <br />
        邮    箱：<s:textfield name="user.email" />
        <span>${fieldErrors['user.email'][0] }</span>
        <br />
        电    话：<s:textfield name="user.phone"
            maxlength="11" />
            <span>${fieldErrors['user.phone'][0] }</span>
        <br />
        <s:submit value="提交" />
    </s:form>
    <s:debug />
</body>
</html>

2、编写Action类并配置相关action

public class RegisterActionValidate extends ActionSupport {
    private User user;
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
    @Override
    public String execute() throws Exception {
        // 5)配置验证文件ActionName-alias-validation.xml
        // ActionName是Action的名称 RegisterAction
        // alia表单提交的action的名称
        return SUCCESS;
    }
}

3、在Action类同目录下创建验证文件ActionName-alias-validation.xml

4、使用验证器编写验证规则

<?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>
    <field name="user.username">
        <field-validator type="requiredstring">
            <param name="trim">true</param>
            <message>用户名不能为空！</message>
        </field-validator>
        <field-validator type="stringlength">
            <param name="minLength">6</param>
            <param name="maxLength">8</param>
            <message>用户名必须是在${minLength}~${maxLength}之间的字符！</message>
        </field-validator>
    </field>
    <field name="user.password">
        <field-validator type="requiredstring">
            <param name="trim">true</param>
            <message>密码不能为空！</message>
        </field-validator>
        <field-validator type="stringlength">
            <param name="minLength">6</param>
            <param name="maxLength">8</param>
            <message>密码必须是在${minLength}~${maxLength}之间的字符！</message>
        </field-validator>
    </field>
    <field name="user.age">
        <field-validator type="required">
            <message>年龄不能为空！</message>
        </field-validator>
        <field-validator type="int">
            <param name="min">1</param>
            <param name="max">120</param>
            <message>年龄必须是在${min}~${max}之间的字符！</message>
        </field-validator>
    </field>
    <field name="user.email">
        <field-validator type="requiredstring">
            <message>Email不能为空！</message>
        </field-validator>
        <field-validator type="email">
            <message>Email格式不正确！比如：(aa@qq.com)</message>
        </field-validator>
    </field>
    <field name="user.phone">
        <field-validator type="requiredstring">
            <message>手机不能为空！</message>
        </field-validator>
        <field-validator type="regex">
            <param name="regexExpression"><![CDATA[^1[358]\d{9}$]]></param>
            <message>手机必须是13,15,18开头的号!</message>
        </field-validator>
    </field>
</validators>