Struts基于validate方法手动完成输入校验

快来打我* 2021-07-24 11:46 549阅读 0赞

**一 视图**

1registForm.jsp

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        
    <title>请输入您的注册信息</title>
        <s:head/>
    
    </head>
    
    
    <body>
    <h2>请输入您的注册信息</h2>
    <s:fielderror/>
    <s:form action="regist">
        <s:textfield name="name" label="用户名"/>
        <s:textfield name="pass" label="密码"/>
        <s:textfield name="age" label="年龄"/>
        <s:textfield name="birth" label="生日"/>
        <s:submit value="注册"/>
    </s:form>
    
    </body>
    
    </html>

2 show.jsp

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        
    <title>校验成功</title>
    
    </head>
    
    
    <body>
    <h3>校验成功</h3>
        用户名：<s:property value="name"/><br/>
        密码：<s:property value="pass"/><br/>
        年龄：<s:property value="age"/><br/>
        生日：<s:property value="birth"/><br/>
    
    </body>
    
    </html>

**二 配置文件**

<?xml version="1.0" encoding="GBK"?>
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
    <struts>
        <constant name="struts.i18n.encoding" value="GBK"/>
    
        <package name="lee" extends="struts-default">
        
        <action name="regist" class="org.crazyit.app.action.RegistAction">
            
            <result name="input">/WEB-INF/content/registForm.jsp</result>
            <result>/WEB-INF/content/show.jsp</result>
        </action>
            <action name="*">
                <result>/WEB-INF/content/{1}.jsp</result>
            </action>
        </package>
    </struts>

**三 action**

package org.crazyit.app.action;
    
    import com.opensymphony.xwork2.ActionSupport;
    import java.util.*;
    
    
    public class RegistAction extends ActionSupport
    {
        private String name;
        private String pass;
        private int age;
        private Date birth;
    
        // name的setter和getter方法
        public void setName(String name)
        {
            this.name = name;
        }
        public String getName()
        {
            return this.name;
        }
    
        // pass的setter和getter方法
        public void setPass(String pass)
        {
            this.pass = pass;
        }
        public String getPass()
        {
            return this.pass;
        }
    
        // age的setter和getter方法
        public void setAge(int age)
        {
            this.age = age;
        }
        public int getAge()
        {
            return this.age;
        }
    
        // birth的setter和getter方法
        public void setBirth(Date birth)
        {
            this.birth = birth;
        }
        public Date getBirth()
        {
            return this.birth;
        }
    
        public void validate()
        {
            System.out.println("进入validate方法进行校验"
                + name);
            // 要求用户名必须包含crazyit子串
            if(!name.contains("crazyit"))
            {
                addFieldError("user" ,
                    "您的用户名必须包含crazyit！");
            }
        }
    }

**四 国际化信息**

#违反用户名必须输入的提示信息
    name.requried=您必须输入用户名!
    #违反用户名必须匹配正则表达式的提示信息
    name.regex=您输入的用户名只能是字母和数字，且长度必须在4到25之间!
    #违反密码必须输入的提示信息
    pass.requried=您必须输入密码!
    #违反密码必须匹配正则表达式的提示信息
    pass.regex=您输入的密码只能是字母和数字，且长度必须在4到25之间!
    #违反年龄必须在指定范围的提示信息
    age.range=您的年龄必须在${min}和${max}之间!
    #违反生日必须在指定范围的提示信息
    birth.range=您的生日必须在${min}和${max}之间!

**五 校验文件**

<?xml version="1.0" encoding="GBK"?>
    
    <!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="name">
            
            <field-validator type="requiredstring">
                <param name="trim">true</param>
                <message key="name.requried"/>
            </field-validator>
            
            <field-validator type="regex">
                <param name="regex"><![CDATA[(\w{4,25})]]></param>
                <message key="name.regex"/>
            </field-validator>
        </field>
        
        <field name="pass">
            
            <field-validator type="requiredstring">
                <param name="trim">true</param>
                <message key="pass.requried"/>
            </field-validator>
            
            <field-validator type="regex">
                <param name="regex"><![CDATA[(\w{4,25})]]></param>
                <message key="pass.regex"/>
            </field-validator>
        </field>
        
        <field name="age">
            <field-validator type="int">
                <param name="min">1</param>
                <param name="max">150</param>
                <message key="age.range"/>
            </field-validator>
        </field>
        
        <field name="birth">
            <field-validator type="date">
                
                <param name="min">1900-01-01</param>
                <param name="max">2050-02-21</param>
                <message key="birth.range"/>
            </field-validator>
        </field>
    </validators>

**六 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/196148158dfe41e7b7adf0117c08bf36.png