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首先新建
User测试类
package com.cx.verify; /** * Created by cxspace on 16-7-14. */ public class User { private String userName; private String pwd; private String email; public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } }
接着来写带有登录逻辑的userAction类
package com.cx.verify; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; /** * Created by cxspace on 16-7-14. */ /* 如果要用struts的数据校验功能，必须要继承actionsupport以及实现相关接口 */ public class UserAction extends ActionSupport{ //封装请求数据 private User user; public User getUser() { return user; } public void setUser(User user) { this.user = user; } public String login(){return SUCCESS; } }
验证实现的xml配置
com/cx/verify/UserAction-validation.xml
<?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> <!--验证的每一个字段用field表示--> <field name="user.userName"> <!--使用指定的验证器--> <field-validator type="requiredstring"> <!--验证失败的错误提示信息--> <message>用户名不能为空！</message> </field-validator> </field> <field name="user.pwd"> <field-validator type="requiredstring"> <message>密码不能为空！</message> </field-validator> <!--长度验证--> <field-validator type="stringlength"> <param name="minLength">6</param> <param name="maxLength">10</param> <message>密码必须为6-10位</message> </field-validator> </field> <!-- <field name="user.birth"> <field-validator type="date"> <message>日期格式不对</message> </field-validator> </field> --> <field name="user.email"> <field-validator type="email"> <message>邮箱格式不对！</message> </field-validator> </field> </validators>
配置Action
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="verify" extends="struts-default"> <action name="user_*" class="com.cx.verify.UserAction" method="{1}"> <result name="success">/index.jsp</result> <result name="input">/login.jsp</result> </action> </package> </struts>
login.jsp里面的内容
<%-- Created by IntelliJ IDEA. User: cxspace Date: 16-7-14 Time: 下午3:44 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>login</title> <!--修改struts样式--> <style type="text/css"> ul{ display:inline; } ul li{ display: inline; color: brown; } </style> </head> <body> <s:debug></s:debug> <form method="post" action="${pageContext.request.contextPath}/user_login"> 用户名:<input type="text" name="user.userName"> <s:fielderror fieldName="user.userName"></s:fielderror> <br> 密码:<input type="password" name="user.pwd"> <s:fielderror fieldName="user.pwd"></s:fielderror> <br> 邮箱:<input type="text" name="user.email" value=""> <s:fielderror fieldName="user.email"></s:fielderror> <br> <input type="submit"> </form> </body> </html>
如果不想在login.jsp里面加样式可修改struts核心包里面的fielderror.ftl如下
然后把它放到工程的/src/template/simple/fielderror.ftl目录下
<#-- /* * $Id: fielderror.ftl 805635 2009-08-19 00:18:54Z musachy $ * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ --> <#if fieldErrors??><#t/> <#assign eKeys = fieldErrors.keySet()><#t/> <#assign eKeysSize = eKeys.size()><#t/> <#assign doneStartUlTag=false><#t/> <#assign doneEndUlTag=false><#t/> <#assign haveMatchedErrorField=false><#t/> <#if (fieldErrorFieldNames?size > 0) ><#t/> <#list fieldErrorFieldNames as fieldErrorFieldName><#t/> <#list eKeys as eKey><#t/> <#if (eKey = fieldErrorFieldName)><#t/> <#assign haveMatchedErrorField=true><#t/> <#assign eValue = fieldErrors[fieldErrorFieldName]><#t/> <#if (haveMatchedErrorField && (!doneStartUlTag))><#t/> <#assign doneStartUlTag=true><#t/> </#if><#t/> <#list eValue as eEachValue><#t/> ${eEachValue} </#list><#t/> </#if><#t/> </#list><#t/> </#list><#t/> <#if (haveMatchedErrorField && (!doneEndUlTag))><#t/> <#assign doneEndUlTag=true><#t/> </#if><#t/> <#else><#t/> <#if (eKeysSize > 0)><#t/> <ul<#rt/> <#if parameters.cssClass??> class="${parameters.cssClass?html}"<#rt/> <#else> class="errorMessage"<#rt/> </#if> <#if parameters.cssStyle??> style="${parameters.cssStyle?html}"<#rt/> </#if> > <#list eKeys as eKey><#t/> <#assign eValue = fieldErrors[eKey]><#t/> <#list eValue as eEachValue><#t/> <li><span><#if parameters.escape>${eEachValue!?html}<#else>${eEachValue!}</#if></span></li> </#list><#t/> </#list><#t/> </ul> </#if><#t/> </#if><#t/> </#if><#t/>
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原文地址：http://www.cnblogs.com/cxspace/p/5671719.html
