原创
struts2框架提供了一种基于验证文件的输入验证方式，将验证规则保存在特定的验证文件中。
验证文件的命名规则
一般情况下，验证文件的命名规则是：Action类名-validation.xml。如果一个Action有多个逻辑处理方法，
要为某个特定方法做验证，其命名规则是：Action类型-Action逻辑名-validation.xml（其中，Action逻辑名是指struts.xml中的对应该处理方法的action配置中的name值）。
struts2框架中提供了大量的内置校验器，在项目开发中，大部分校验功能都可以通过内置校验器来完成。struts2框架提供两种配置校验器的方式：字段校验器配置风格和非字段校验器配置风格。
下面通过字段校验器配置风格来举例。
一个客户输入验证如下：
客户输入界面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<%
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> <title>注册页面</title>
<style type="text/css">
body{font-size:12px;}
#title{color:#FF7B0B;font-size:20px;font-weight:bold;}
.td{height:30px;}
.info{color:#BBBBBB;}
</style>
<script language="javascript">
function check(frm){
if(frm.accept.checked==false){
alert("您需要仔细阅读用户使用协议，并同意接受协议!");
return false;
}
return true;
}
</script>
</head> <body>
<s:fielderror cssStyle="color:red"></s:fielderror>
<s:form action="register" method="post" theme="simple" onsubmit="return check(this)" namespace="/">
<table border="0" align="center" width="1000">
<tr><td colspan="3" align="center" height="40" id="title">填写注册信息<br/></td></tr>
<tr><td align="right">用户名:*</td><td><s:textfield name="user.userName"/></td><td class="info">用户名由字母开头，后跟字母、数字或下划线！</td></tr>
<tr><td align="right">密码:*</td><td><s:password name="user.userPwd"/></td><td class="info">设置登录密码，至少6位!</td></tr>
<tr><td align="right">确认密码:*</td><td><s:password name="userPwd"/></td><td class="info">请再输入一次你的密码!</td></tr>
<tr><td align="right">性别:*</td><td><s:radio name="user.userSex" list="{'男','女'}"/></td><td class="info">请选择你的性别!</td></tr>
<tr><td align="right">邮箱地址:*</td><td><s:textfield name="user.userEmail"/></td><td class="info">请填写您的常用邮箱，可以用此邮箱找回密码！</td></tr>
<tr><td align="right" valign="top">基本情况:*</td><td colspan="2"><s:textarea name="user.userBasicInfo" rows="5" cols="50"/></td></tr>
<tr><td colspan="3" align="center" height="40"><s:checkbox name="accept" value="false"/>我已经仔细阅读并同意接受用户使用协议</td></tr>
<tr><td colspan="3" align="center" height="40"><input type="submit" value="确认"/> <input type="reset" value="取消"/></td></tr>
</table>
</s:form>
</body>
</html>
创建保存用户信息的JavaBean
public class User {
private String userName;
private String userPwd;
private String userSex;
private String userEmail;
private String userBasicInfo;
public User(){};
public String getUserName() {
return userName;
}
public void setUserName(String usreName) {
this.userName = usreName;
}
public String getUserPwd() {
return userPwd;
}
public void setUserPwd(String userPwd) {
this.userPwd = userPwd;
}
public String getUserSex() {
return userSex;
}
public void setUserSex(String userSex) {
this.userSex = userSex;
}
public String getUserEmail() {
return userEmail;
}
public void setUserEmail(String userEmail) {
this.userEmail = userEmail;
}
public String getUserBasicInfo() {
return userBasicInfo;
}
public void setUserBasicInfo(String userBasicInfo) {
this.userBasicInfo = userBasicInfo;
}
}
创建Acion验证输入：
package Action;
import JavaBean.User;
import java.sql.*;
import com.opensymphony.xwork2.ActionSupport;
import java.util.regex.*;
import DBase.connection;
public class register extends ActionSupport{
private User user;
private String userPwd;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getUserPwd() {
return userPwd;
}
public void setUserPwd(String userPwd) {
this.userPwd = userPwd;
} public boolean add(){
Connection con=connection.getConnection(); //获取数据库连接
String sql="insert into Users(username,userpwd,usersex,useremail,userbasicinfo) values(?,?,?,?,?)";
try {
PreparedStatement pre=con.prepareStatement(sql);
pre.setString(1,user.getUserName());
pre.setString(2, user.getUserPwd());
pre.setString(3, user.getUserSex());
pre.setString(4, user.getUserEmail());
pre.setString(5, user.getUserBasicInfo());
int n=pre.executeUpdate();
if(n==1){
return true;
}
} catch (SQLException e) {
System.out.println("error");
return false;
}
return false;
}
public String regist() throws Exception{
if(add()==true){
return "success";
}else{
return "input";
}
}
}
struts.xml的配置
<struts>
<!-- Overwrite Convention -->
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<constant name="struts.convention.action.suffix" value="Controller"/>
<constant name="struts.convention.action.mapAllMatches" value="true"/>
<constant name="struts.convention.default.parent.package" value="rest-showcase"/> <constant name="struts.convention.package.locators" value="example"/> <!-- Uncomment the lines below to use Jackson XML bindings instead of the XStream library to handle XML serialisations -->
<!--
<bean name="jacksonXml" type="org.apache.struts2.rest.handler.ContentTypeHandler" class="org.apache.struts2.rest.handler.JacksonXmlHandler" />
<constant name="struts.rest.handlerOverride.xml" value="jacksonXml"/>
--> <package name="default" namespace="/" extends="struts-default">
<!-- 定义拦截器 -->
<global-allowed-methods>index,show,create,update,destroy,deleteConfirm,edit,editNew</global-allowed-methods>
<!-- 配置action -->
<action name="register" class="Action.register">
<result name="success">/register283/Success.jsp</result>
<result name="input">/register283/regist.jsp</result>
</action>
</package>
</struts>
success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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>校验成功</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>
校验通过，用户信息如下：
<hr>
用户名：<s:property value="user.userName"/><br>
密码：<s:property value="user.userPwd"/><br>
确认密码：<s:property value="userPwd"/><br>
性别：<s:property value="user.userSex"/><br>
邮箱地址：<s:property value="user.userEmail"/><br>
基本情况：<s:property value="user.userBasicInfo"/>
</body>
</html>
成功页面
18:19:03
2018-11-16