Struts1.x中的Validator框架运用

Struts1.x中的Validator框架应用

要在struts中用validate框架，必须导入相应的jar包。我已经在附件中上传了一个struts的一个空白项目，所有的jar包可以在附件中的struts-blank-1.3.10.war可以把他中lib包中的所有jar包拷贝到自己的项目中。

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validate框架是验证表单中添写的信息是否合法，比如用户名不能为空、email的格式是否正确等。类似于JavaScript。

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项目的大致轮廓在附件的图片中

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下面我将最基本的validate框架实现代码公布如下：

struts-config.xml代码如下：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts-config PUBLIC          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"          "http://struts.apache.org/dtds/struts-config_1_3.dtd"><struts-config><!-- 接收表单数据的ActionForm(FormBean) --><form-beans><form-bean name="loginForm" type="com.neusoft.struts.forms.LoginForm"></form-bean></form-beans><!-- 用于让index.jsp文件跳转到LoginUI.do --><global-forwards><forward name="loginui" path="/LoginUI.do"></forward></global-forwards><action-mappings><!-- 此Action用于跳转到登录页面 --><action path="/LoginUI" type="com.neusoft.struts.actions.LoginUI"><forward name="success" path="/WEB-INF/user/userLogin.jsp"></forward></action><!-- 此Action用于接收并判断用户的信息 --><action path="/Login" name="loginForm"input="/WEB-INF/user/userLogin.jsp"scope="request"type="com.neusoft.struts.actions.Login"><forward name="success" path="/WEB-INF/user/main.jsp"></forward></action></action-mappings><!-- 用于指定国际化的资源文件的所在位置，注意不要加.properties --><message-resources parameter="com.neusoft.struts.properties.Application"></message-resources><!-- 把validate框架所用到的两个xml文件加载到项目中 --><plug-in className="org.apache.struts.validator.ValidatorPlugIn">    <set-property property="pathnames"        value="/org/apache/struts/validator/validator-rules.xml,               /WEB-INF/validation.xml"/>  </plug-in></struts-config>

web.xml文件内容如下：

<?xml version="1.0" encoding="ISO-8859-1"?>  <!DOCTYPE web-app PUBLIC"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN""http://java.sun.com/dtd/web-app_2_3.dtd"> <web-app>     <servlet>    <servlet-name>action</servlet-name>    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>    <init-param>      <param-name>config</param-name>      <param-value>/WEB-INF/struts-config.xml</param-value>    </init-param>    <load-on-startup>2</load-on-startup> </servlet>    <servlet-mapping>    <servlet-name>action</servlet-name>    <url-pattern>*.do</url-pattern>  </servlet-mapping>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

?validate.xml文件内容如下（validate-rules.xml文件用系统默认的就可以）：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE form-validation PUBLIC     "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.3.0//EN"     "http://jakarta.apache.org/commons/dtds/validator_1_3_0.dtd"><form-validation>    <formset>        <!-- An example form -->        <form name="loginForm">            <field                property="username"                depends="required">                    <arg key="loginForm.username"/>            </field>            <field                property="password"                depends="required,minlength,maxlength">                <arg key="loginForm.password" position="0"/>                <!-- ${var:minlength}的作用是引用下面定义的变量 -->                    <arg key="${var:minlength}" name="minlength"                     resource="false" position="1"/>                    <arg key="${var:maxlength}"  name="maxlength"                    resource="false" position="1"/>                    <var>                        <var-name>minlength</var-name>                        <var-value>4</var-value>                    </var>                    <var>                        <var-name>maxlength</var-name>                        <var-value>7</var-value>                    </var>            </field>        </form>    </formset></form-validation>

?userLogin.jsp文件如下：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">        <title>My JSP 'userLogin.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body><html:form action="/Login" method="POST"><bean:message key="loginForm.username" /><html:text  property="username"></html:text><html:errors property="username" /><br/><bean:message key="loginForm.password" /><html:password property="password"></html:password><html:errors property="password" /><br/><html:submit><bean:message key="loginForm.submit" /></html:submit><html:reset><bean:message key="loginForm.reset" /></html:reset></html:form>  </body></html>

index.jsp文件内容如下：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><logic:forward name="loginui"/>

?Login.java

package com.neusoft.struts.actions;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;public class Login extends Action {@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {return null;//mapping.findForward("success") ;}}

?LoginUI.java

package com.neusoft.struts.actions;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;public class LoginUI extends Action {@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {return mapping.findForward("success") ;}}

?LoginForm.java

package com.neusoft.struts.forms;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 /*ActionForm*/ValidatorForm {/** *  */private static final long serialVersionUID = 1L;private String username;private String password;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic ActionErrors validate(ActionMapping mapping,HttpServletRequest request) {return super.validate(mapping, request);}}

?Application_en.properties

errors.required=(en){0} is required.errors.minlength=(en){0} can not be less than {1} characters.errors.maxlength=(en){0} can not be greater than {1} characters.loginForm.username=usernameloginForm.password=passwordloginForm.submit=submitloginForm.reset=reset

? Application.properties

errors.required={0} is required.errors.minlength={0} can not be less than {1} characters.errors.maxlength={0} can not be greater than {1} characters.loginForm.username=usernameloginForm.password=passwordloginForm.submit=submitloginForm.reset=reset

?Application_zh_CN.properties

errors.required={0} \u662F\u5FC5\u586B\u9879.errors.minlength={0} \u4E0D\u80FD\u5C0F\u4E8E {1} \u5B57\u7B26.errors.maxlength={0} \u4E0D\u80FD\u5927\u4E8E {1} \u5B57\u7B26.loginForm.username=\u7528\u6237\u540DloginForm.password=\u5BC6\u7801loginForm.submit=\u63D0\u4EA4loginForm.reset=\u91CD\u7F6E

?完毕，自己去试试吧。

如果有什么问题可以随时跟我联系，我们可以交流下。

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