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您的当前位置：新书城>在线阅读>Java/J2EE/JSP

Struts Validator 实例

来源：CSDN   作者：新书城收集整理   发布时间：2006-10-28   人气：2247
正在装载数据……

1    hello world

struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
    <data-sources />
    <form-beans >
            <form-bean name="loginForm" type="com.ergal.struts.form.LoginForm" />
    </form-beans>

    <global-exceptions />
    <global-forwards />
    <action-mappings >
            <action attribute="loginForm"
                path="/login" 
                    input="/login.jsp"
                    name="loginForm"
                    scope="request"
                    validate="true"
                    type="com.ergal.struts.action.LoginAction" >
                    <forward
                name="success"
                path="/haha.jsp"/>
        </action>
    </action-mappings>

    <message-resources parameter="com.ergal.struts.ApplicationResources" />
    
    
    <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
    <set-property
        property="pathnames"
        value="/WEB-INF/validator-rules.xml, /WEB-INF/validation.xml"/>
    </plug-in>
          

</struts-config>

 

login.jsp

<%@ page language="java"pageEncoding="GBK"%>
<%@ taglib uri="/tags/struts-html" divfix="html"%>
<%@ taglib uri="/tags/struts-bean" divfix="bean"%>

<html>
  <head>

    
    <title>My JSP 'login.jsp' starting page</title>


  </head>
  
  <body>
      <html:errors/>
    This is my JSP page. <br>
    <html:form action="/login" method="post">
    username:<html:text property="username"></html:text>
    <html:submit>submit</html:submit>
    </html:form>
  </body>
</html>

 

LoginForm.java

 


package com.ergal.struts.form;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.ValidatorForm;


public class LoginForm extends ValidatorForm 
{
    /*
     * Generated Methods
     */
    private String username;
    
    public String getUsername() 
    {
        return username;
    }

    public void setUsername(String username) 
    {
        this.username = username;
    }




    public void reset(ActionMapping mapping, HttpServletRequest request) 
    {
    
    }
}

 

LoginAction.java

......

validation.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN" "validator_1_1_3.dtd" >
<form-validation>
    <formset>
        <form name="loginForm">
            <field property="username" depends="required">
                <arg key="label.username" position="0"/>
            </field>
        </form>
    </formset>

</form-validation>

 

validator-rules.xml

不变 用现成的

ApplicationResoures.properties

# Resources for parameter 'com.ergal.struts.ApplicationResources'
# Project P/validatortest
label.username=Your name
errors.required={0} is required.

 2 配置元素

因为后面还要学习自定义rules所以先不管validator-rules.xml

先看validattion.xml

     global  和 constant 结合可以定义一些全局变量

如

     <global>
        <constant>
            <constant-name>zip</constant-name>
            <constant-value>^d{5}d*$</constant-value>
        </constant>        
    </global>

然后在var里就可以直接这么引用了

                    <var>
                        <var-name>mask</var-name>
                        <var-value>${zip}</var-value>
                    </var>

 

  formset

有属性language 和 country

元素constant 和 form

里面也可以用constant来像前面那样来声明变量 但是这个变量是局部变量

 

 

  form

form的name属性 就是名字要和struts的form的bean的定义名字一样

有元素field

  field

属性 depends 对应rules property 对应表单的某个属性的名字和ActionForm的变量对应 page对应跨页表单

有元素arg msg

 arg

属性name 对应depends里的rules key 对应消息文本 bundle   resource是否用原始的定义文本 默认true

position 对应资源文件里的序列{*}的值

msg

 

属性name 对应depends里的rules key 对应消息文本 bundle   resource是否用原始的定义文本 默认true

var

比较简单就是var-name 和var-value 用来设定参数值或者规则的表达式

现在添加一个来测试

首先改成

    <formset>
        <form name="loginForm">
            <field property="username"
                depends="required,integer,intRange">
                <arg key="errors.test" />
            
            </field>
        </form>
    </formset>

什么都不写就写一个arg

在validation.xml里页就只写

 

errors.required={0} is required.
errors.test=asdasd

这样输入空的时候显示asdasd is required.

输入不合理的数字就会什么都没有 因为违反了integer和Intrang的规则 但是在这两个规则里的msg的对应的 资源并没有定义 所以会这样

然后加上默认的

 

errors.range=int must between {1}and {2}
errors.integer=it must be integer

这时再测试

输入空显示asdasd is required.

输入字母显示it must be integer

输入其他数字显示int must between {1}and {2}

原因是没有定义var

现在加上 然后改成

 

    <formset>
        <form name="loginForm">
            <field property="username"
                depends="required,integer,intRange">
                <arg key="errors.test" />
                
                <arg name="required" key="label.username" position="0" />
                
                    <arg name="intRange" key="${var:min}" resource="false" position="1"/>
                    <arg name="intRange" key="${var:max}" resource="false" position="2"/>
                    <var>
                        <var-name>min</var-name>
                        <var-value>10</var-value>
                    </var>
                    <var>
                        <var-name>max</var-name>
                        <var-value>20</var-value>
                    </var>
                
            </field>
        </form>
    </formset>

对应的资源文件为

 

label.username=Your name
errors.required={0} is required.
errors.range=int must between {1}and {2}
errors.integer=it must be integer
errors.test=asdasd

再次测试

所有的都正常了 但是那个<arg key="errors.test" />现在其不到任何作用了 原来他是自动填充arg里的元素的

再做一下测试 看看是不是这么回事

资源文件这么写

 

label.username=Your name
errors.required={0} is required {1} so was it
errors.test=asdasd
errors.testwo=two

验证文件这么写

 

            <field property="username"
                depends="required,integer,intRange">
                <arg  key="errors.test" />
                <arg  key="errors.testwo" />

            </field>

 

结果却是two is required {1} so was it. 这样的话并没有完全自动正确填充 而且发生错误

 3 validwhen

现在加入稍微复杂一点的 validwhen是用来检验前后关联的属性的

比如这个例子 用户注册的时候两次输入的密码必须相同

那么资源里加上

errors.register.thesamepassword=You must enter the same password

validation.xml的第二个password里加上

                <msg name="validwhen" key="errors.register.thesamepassword"/>
                <var>
                    <var-name>test</var-name>
                    <var-value>(*this* == password)</var-value>
                </var>

validwhen只接受test这一个参数

 有一点注意 就是 resource 这个属性是指 是否用变量 如定义的最小值和最大值这样的validator.xml里定义的变量

要么就会显示一个null如果你在intRange定义了动态变量的话

 

4 结合复杂例子

先看效果图

 

 

 

 

首先页面文件

register.jsp

 

<%@ page language="java" pageEncoding="GBK" import="com.ergal.hibernate.*,java.util.*"%>
<%@ taglib uri="/tags/struts-html" divfix="html"%>
<%@ taglib uri="/tags/struts-bean" divfix="bean"%>
<%@ taglib uri="/tags/c.tld" divfix="c"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    
    <title>register</title>
    


  </head>
  
  <body>
      
      <table>
     
          
              
          <html:errors/>
              
          
    
            <html:form action="/register" method="post">
          <tr>
              <td width="60">
                  <bean:message key="register.user.username"/>            
                </td>
                <td width="60">
                    <html:text property="username"></html:text>    
              </td>
          </tr>
        <tr>
              <td width="60">
                  <bean:message key="register.user.password"/>           
              </td>
              <td width="60">
                  <html:password property="password"></html:password>     
              </td>
          </tr>            
        <tr>
              <td width="60">
                  <bean:message key="register.user.confirmPassword"/>                
               </td>
               <td width="60">
                   <html:password property="confirmPassword"></html:password>
              </td>
          </tr> 
          <tr>
              <td width="60">
                  <bean:message key="register.user.nickname"/>            
                </td>
                <td width="60">
                    <html:text property="nickname"></html:text>    
              </td>           
         </tr>
         <tr>
             <td width="60">
                  <bean:message key="register.user.sex"/>            
                </td>
                <td width="60">
                    <html:radio property="radio"  value="0" /><bean:message key="register.user.male"/> 
                <html:radio property="radio"  value="1" /><bean:message key="register.user.female"/>     
              </td>  
                       
         </tr>
         <tr>
              <td width="60">
                  <bean:message key="register.user.email"/>            
                </td>
                <td width="60">
                    <html:text property="email"></html:text>    
              </td>           
         </tr>
         <tr>
              <td width="60">
                  <bean:message key="register.user.birthday"/>            
                </td>
                <td width="60">
                    <html:text property="birthday"></html:text>    
              </td>
              <td>
                  <html:select property="month">
                          <option selected value>month</option>
                      <c:forEach var="m"  begin="1" end="12" step="1">
                         <option value="<c:out value="${m}"/>"><c:out value="${m}"/></option>
                    </c:forEach>
                </html:select>
                <bean:message key="register.user.month"/>
                <html:select property="day">
                          <option selected value>day</option>
                      <c:forEach var="d"  begin="1" end="31" step="1">
                         <option value="<c:out value="${d}"/>"><c:out value="${d}"/></option>
                    </c:forEach>
                </html:select>
                <bean:message key="register.user.day"/>
              </td>         
         </tr>
         <tr>
              <td width="60">
                  <bean:message key="register.user.telnum"/>            
                </td>
                <td width="60">
                    <html:text property="telnum"></html:text>    
              </td>
           </tr>
         <tr>
              <td width="60">
                  <bean:message key="register.user.qq"/>            
                </td>
                <td width="60">
                    <html:text property="qq"></html:text>    
              </td>
           </tr>
           <tr>
              <td width="60">
                  <bean:message key="register.user.msn"/>            
                </td>
                <td width="60">
                    <html:text property="msn"></html:text>    
              </td>
           </tr>
           <tr>
              <td width="60">
                  <bean:message key="register.user.perweb"/>            
                </td>
                <td width="60">
                    <html:text property="perweb"></html:text>    
              </td>
           </tr>
           <tr>
              <td width="60">
                  <bean:message key="register.user.blog"/>            
                </td>
                <td width="60">
                    <html:text property="blog"></html:text>    
              </td>
           </tr>
           <tr>
              <td width="60">
                  <bean:message key="register.user.intro"/>            
                </td>
                <td width="250">
                    <html:textarea property="intro"></html:textarea>    
              </td>
           </tr>
         
         
         
         <tr>
              <td width="60">
                  <html:submit></html:submit>    
              </td>
              <td width="60">
                  <html:reset></html:reset>    
              </td>
           </tr>           
                    
            </html:form>
      </table>
  </body>
</html>

 

validator.xml

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN" "validator_1_1_3.dtd" >
<form-validation>
    <formset>
        <form name="registerForm">
            <field property="username" depends="required,minlength">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.username" position="0"/>
                <arg name="minlength" key="register.user.username"  position="0"/>
                <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>
                <var>
                    <var-name>minlength</var-name>
                    <var-value>3</var-value>
                </var>
            </field>
            <field property="password" depends="required,minlength">
                <msg name="required" key="errors.register.required"/>
                <arg name="required" key="register.user.password" position="0"/>
                <arg name="minlength" key="register.user.password"  position="0"/>
                <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>
                <var>
                    <var-name>minlength</var-name>
                    <var-value>8</var-value>
                </var>
            </field>
            <field property="confirmPassword" depends="required,validwhen">
                <msg name="required" key="errors.register.required"/>
                <arg name="required" key="register.user.confirmPassword" position="0"/>
                <msg name="validwhen" key="errors.register.thesamepassword"/>
                <arg name="minlength" key="register.user.confirmPassword" position="0"/>
                <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>
                <var>
                    <var-name>minlength</var-name>
                    <var-value>8</var-value>
                </var>
                <var>
                    <var-name>test</var-name>
                    <var-value>(*this* == password)</var-value>
                </var>
            </field>
            <field property="nickname" depends="required,minlength,mask">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.nickname" position="0"/>
                <arg name="mask" key="register.user.nickname"  position="0"/>
                <arg name="mask" key="errors.register.nickmask"   position="1"/>
                <arg name="minlength" key="register.user.nickname"  position="0"/>
                <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>
                <var>
                    <var-name>minlength</var-name>
                    <var-value>3</var-value>
                </var>
                <var>
                    <var-name>mask</var-name>
                    <var-value>^[a-zA-Z]*$</var-value>
                </var>
                
            </field>
            <field property="email" depends="required,email">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.email" position="0"/>
                <arg name="email" key="register.user.email" position="0"/>
            </field>            
            <field property="qq" depends="integer">
                <arg name="integer" key="register.user.qq" position="0"/>
                
            </field>
            <field property="msn" depends="email">
                <arg name="email" key="register.user.msn" position="0"/>
            </field>
            <field property="blog" depends="url">                
                <arg name="url" key="register.user.blog" position="0"/>
                <var>
                    <var-name>nofragments</var-name>
                    <var-value>false</var-value>
                </var>
                <var>
                    <var-name>allowallschemes</var-name>
                    <var-value>true</var-value>
                </var>
            </field>
            <field property="birthday" depends="required,integer,intRange">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.birthday" position="0"/>                
                <arg name="integer" key="register.user.year" position="0"/>
                <arg name="intRange" key="register.user.birthday" position="0"/>
                <arg name="intRange" key="register.user.year" position="1"/>
                <arg name="intRange" key="${var:min}" resource="false" position="2"/>
                <arg name="intRange" key="${var:max}" resource="false" position="3"/>
                <var>
                    <var-name>min</var-name>
                    <var-value>1900</var-value>
                </var>
                <var>
                    <var-name>max</var-name>
                    <var-value>2008</var-value>
                </var>
            </field>
            <field property="day" depends="required,integer,intRange">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.day" position="0"/>
                <arg name="integer" key="register.user.day" position="0"/>
                <arg name="intRange" key="register.user.birthday" position="0"/>
                <arg name="intRange" key="register.user.day" position="1"/>
                <arg name="intRange" key="${var:min}" resource="false" position="2"/>
                <arg name="intRange" key="${var:max}" resource="false" position="3"/>
                <var>
                    <var-name>min</var-name>
                    <var-value>1</var-value>
                </var>
                <var>
                    <var-name>max</var-name>
                    <var-value>31</var-value>
                </var>
            </field>
            <field property="month" depends="required,integer,intRange">
                <msg name="required" key="errors.register.required" />
                <arg name="required" key="register.user.month" position="0"/>
                <arg name="integer" key="register.user.month" position="0"/>
                <arg name="intRange" key="register.user.birthday" position="0"/>
                <arg name="intRange" key="register.user.month" position="1"/>
                <arg name="intRange" key="${var:min}" resource="false" position="2"/>
                <arg name="intRange" key="${var:max}" resource="false" position="3"/>
                <var>
                    <var-name>min</var-name>
                    <var-value>1</var-value>
                </var>
                <var>
                    <var-name>max</var-name>
                    <var-value>12</var-value>
                </var>
            </field>
        </form>
    </formset>
</form-validation>

 

applicationResource.properties

 

# Resources for parameter 'com.ergal.struts.ApplicationResources'
# Project P/datahunt


register.user.username=username
register.user.password=password
register.user.confirmPassword=Confirm Password
register.user.nickname=nickname
register.user.sex=sex
register.user.male=male
register.user.female=female
register.user.email=EMAIL
register.user.birthday=birthday
register.user.birthday.tip=if your web browse not support JavaScript please enter it  yourself like YYYY-MM-dd
register.user.telnum=phone num
register.user.qq=QQ 
register.user.msn=MSN
register.user.perweb=web
register.user.blog=blog
register.user.intro=Intro
register.user.year=year
register.user.month=month
register.user.day=day


errors.register.required=The {0} is required  <br>
errors.register.thesamepassword=You must enter the same password <br>
errors.invalid=The {0} must {1} 
errors.minlength=your {0} must more than {1} <br>
errors.maxlength=your {0} must less than {1} <br>
errors.register.nickmask=between a-z or A-Z <br>
errors.email=the {0} is invalid <br>
errors.date=the {0} is invalid <br>
errors.integer=your {0} must be integer <br>
errors.url=your {0} is invalid <br>
errors.range={0}  {1} must between {2} and {3} <br> 


 

 除了required 和 validwhen 没有用原有的定义(好像validwhen没有errors定义) 而用<msg>来重新定义了以外

其他的都只是把原有的errors在资源文件里写了一下而已 没有修改key




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