struts2使用验证文件实现校验

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"/>&nbsp;<input type="reset" value="取消"/></td></tr>
        </table>
    </s:form>
  </body>
</html>

struts2使用验证文件实现校验

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>