web14 validation.xml配置登陸驗證文件配置

時間 2019-12-11

標籤 web14 web validation.xml validation xml 配置登陸驗證文件欄目 HTML 简体版

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----web

應用Struts驗證框架並對用戶登陸頁面進行輸入驗證。apache

----框架

一、配置Struts2環境（web08），web.xml中註冊過濾器。jsp

二、UserAction類ide

package dog;

import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport{
    private static final long serialVersionUID=1L;
    private String username;
    private String password;
    
    //用戶登陸
    @Override
    public String execute() throws Exception{
        return SUCCESS;
    }
    
    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;
    }
}

三、struts.xml配置post

<?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>
    <!-- 開發模式打開 -->
    <constant name="struts.devMdoe" value="true"/>
    <!-- 聲明包 -->
    <package name="myPackage" extends="struts-default">
        <!-- 定義action -->
        <action name="userAction" class="dog.UserAction">
            <!-- 用戶登陸頁面 -->
            <result name="input">/login.jsp</result>
            <!-- 定義成功的映射頁面 -->
            <result>/success.jsp</result>
        </action>
    </package> 
</struts>

四、建立login.jsp學習

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'login.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>
    <s:form action="userAction" methode="post">
        <s:textfield name="username" label="用戶名" required="true"></s:textfield>
        <s:password name="password" label="密碼" required="true"></s:password>
        <s:submit key="submit" value="登陸"></s:submit>
    </s:form>
  </body>
</html>

success.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'success.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>
    <s:property value="username"/>，登陸成功 </body>
</html>

五、編寫用戶登陸驗證文件，UserAction-validation.xml，必須放在UserAction.java中。

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN"
        "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
<validators>
    <!-- 驗證用戶名 -->
    <field name="username">
        <field-validator type="requiredstring">
            <message>請輸入用戶名</message>
        </field-validator>
    </field>
    <!-- 驗證密碼 -->
    <field name="password">
        <field-validator type="requiredstring">
            <message>請輸入密碼</message>
        </field-validator>
    </field>
</validators>

六、部署，訪問：localhost:8080/jwrm157-yanzheng/login.jsp

點擊登陸

----

完畢