struts2連結資料庫的簡單登陸驗證
阿新 • • 發佈：2019-02-04
1、安裝Mysql,建立資料庫struts2，這裡建立三個欄位username,userpassword,userrealname
2、建立資料變數EndUser.java
建立資料庫連結類DBConection.javapackage com.model.user; public class EndUser { private String userName; private String userPassword; private String userRealName; public EndUser(){} public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getUserPassword() { return userPassword; } public void setUserPassword(String userPassword) { this.userPassword = userPassword; } public String getUserRealName() { return userRealName; } public void setUserRealName(String userRealName) { this.userRealName = userRealName; } }
建立資料庫查詢和新增類UserDao.javapackage com.db_util; import java.sql.*; public class DBConnection { private static String driverName="com.mysql.jdbc.Driver"; private static String userName="root"; private static String userPwd="root"; private static String dbName="struts2"; public static Connection getDBConnection(){ String url1="jdbc:mysql://localhost:3306/"+dbName; String url2="?user="+userName+"&password="+userPwd; String url3="&useUnicode=true&characterEncoding=utf-8"; String url=url1+url2+url3; Connection con=null; try{ Class.forName(driverName);//載入驅動 con=DriverManager.getConnection(url);//連結資料庫 }catch(Exception e){e.printStackTrace();} return con; } //關閉資料庫 public static void closeDB(Connection con,PreparedStatement pstm,ResultSet rs){ if(rs!=null)try{rs.close();}catch(SQLException e){e.printStackTrace();} if(pstm!=null)try{pstm.close();}catch(SQLException e){e.printStackTrace();} if(con!=null)try{con.close();}catch(SQLException e){e.printStackTrace();} } }
建立Action類UserAction.javapackage com.db_util; import java.sql.*; public class DBConnection { private static String driverName="com.mysql.jdbc.Driver"; private static String userName="root"; private static String userPwd="root"; private static String dbName="struts2"; public static Connection getDBConnection(){ String url1="jdbc:mysql://localhost:3306/"+dbName; String url2="?user="+userName+"&password="+userPwd; String url3="&useUnicode=true&characterEncoding=utf-8"; String url=url1+url2+url3; Connection con=null; try{ Class.forName(driverName);//載入驅動 con=DriverManager.getConnection(url);//連結資料庫 }catch(Exception e){e.printStackTrace();} return con; } //關閉資料庫 public static void closeDB(Connection con,PreparedStatement pstm,ResultSet rs){ if(rs!=null)try{rs.close();}catch(SQLException e){e.printStackTrace();} if(pstm!=null)try{pstm.close();}catch(SQLException e){e.printStackTrace();} if(con!=null)try{con.close();}catch(SQLException e){e.printStackTrace();} } }
package com.action.user;
import com.model.user.*;
import com.dao.user.*;
public class UserAction {
private EndUser user;
private UserDao userDao=new UserDao();
public EndUser getUser(){
return user;
}
public void setUser(EndUser user){
this.user=user;
}
//使用者登入Action的方法
public String userLogin() throws Exception{
String forward=null;
EndUser user2=userDao.find(user);
if(user2!=null){forward="success";}else{forward="failure";}
return forward;
}
//使用者註冊Action的方法
public String userRegister() throws Exception{
String forward="error";
int flag=0;
EndUser user2=(userDao.find(user));
if(user2!=null){forward="error_user";}
else{
flag=userDao.save(user);
if(flag==1){forward="success";}
}
return forward;
}
}
建立login.jsp頁面
<form action="/struts2/user/logincheck" method="post">
<table>
<tr><th colspan="2">使用者登入</th></tr>
<tr><th align="right">使用者名稱：</th><td><input name="user.userName"/></td></tr>
<tr><td align="right">密碼：</td>
<td><input type="password" name="user.userPassword"/></td></tr>
<tr><td align="left"><input type="submit" value="登入"/></td>
<td>未註冊者，請先註冊，單擊<a href="/struts2/user/register.jsp">註冊</a></td>
</tr>
</table>
</form><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>註冊頁面</title>
<script type="text/javascript">
function isValidate(form){
var username=document.getElementById("username").value;
var userpass=document.getElementById("userpassword").value;
var userpass1=document.getElementById("userpass1").value;
if(userpass!=userpass1){
alert("兩次密碼輸入不一致，請重新輸入！");
return false;
}else if(username.length<=0||userpassword.length<=0)
{
alert("使用者名稱及其密碼不能為空，請重新輸入！");
returnfalse;}
else {return true;}
}
</script>
</head>
<body>
<h3 align="left">歡迎註冊，請填資訊！</h3>
<form name="register" action="/struts2/user/register" method="post" onsubmit="return isValidate()">
<table>
<tr><td align="right">賬戶名：</td>
<td><input name="user.userName" id="username"></td></tr>
<tr><td align="right">賬戶設定密碼：</td>
<td><input type="password" name="user.userPassword" id="userpassword"></td></tr>
<tr><td align="right">再次確認你的密碼：</td>
<td><input type="password" name="userpass1" id="userpass1"></td></tr>
<tr><td align="right">真實姓名：</td>
<td><input name="user.userRealName" id="userrealname"></td></tr>
<tr><td align="right"><input type="submit" value="提交"></td>
<td colspan="2"><input type="reset" value="重新填寫"></td></tr>
</table>
</form>
</body>login_success.jsp
<body>
歡迎你，${user.userRealName} ,您已經成功登入！<br>
進入主頁面，請點選<a href="/struts2/index.jsp">主頁面</a>
</body><body>
<h2 align="center">
<font color="red">對不起，您填寫的帳號和密碼不正確！請</font>
<a href="/struts2/user/login.jsp">重新登入</a>
</h2>
</body><struts>
<package name="struts2" namespace="/" extends="struts-default">
<action name="register" class="com.action.user.UserAction" method="userRegister">
<result name="success">/user/register_success.jsp</result>
<result name="error">/user/struts2/register_failure.jsp</result>
<result name="error_user">/user/struts2/register_failure_user.jsp</result>
</action>
<action name="logincheck" class="com.action.user.UserAction" method="userLogin">
<result name="success">/user/login_success.jsp</result>
<result name="error">/user/login_failure.jsp</result>
</action>
</package>
</struts><filter>
<filter-name>struts2PrepareFilter</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>
</filter>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> 註冊頁面圖
