Struts2框架校驗:對jsp頁面的數據進行規範;
過濾器Filter:實現不登錄禁止訪問主頁面;
項目結構:
Struts2 jar包
Action包下的 StrutsAction.java
package action;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import domain.JDBC;
import domain.User;
public class StrutsAction extends ActionSupport {
private static final long serialVersionUID = 7136705594241625207L;
private User user;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
// 用戶登錄
public String login() throws SQLException {
System.out.println("login" + user);
System.out.println("login的phone" + user.getPhone());
int flag = 0; // 登錄成功與否的標準
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
String phone = user.getPhone(); // 獲取用戶手機號
String password = user.getPassword(); // 獲取用戶密碼
System.out.println("login_phone" + phone);
System.out.println("login_password" + password);
conn = JDBC.getConnection(); // 與數據庫建立連接
String sql = "select * from user where phone='" + phone + "'"; // Sql查詢語句,查詢用戶手機號是否存在
stmt = conn.createStatement();
rs = stmt.executeQuery(sql); // 進行查詢
if (rs.next()) {
if (password.equals(rs.getString("password"))) { // 密碼相同
User user = new User(); // 新建一個user對象
user.setUsername(rs.getString("username")); // 將用戶的用戶名存入
user.setPhone(rs.getString("phone")); // 將用戶的手機號存入
// 將這個用戶存入seesion中
ServletActionContext.getRequest().getSession().setAttribute("user", user);
flag = 1; // 該用戶存在;
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
rs.close();
stmt.close();
conn.close();
System.out.println("mysql close");
}
if (flag == 1) {
System.out.println("SUCCESS");
return SUCCESS ;
}
return ERROR;
}
// 用戶註冊
public String register() throws SQLException {
int flag = 0;
System.out.println("register" + user);
Connection conn = null;
Statement stmt = null;
try {
String phone = user.getPhone();
String password = user.getPassword();
String username = user.getUsername();
int isblacklist = 0; // 黑名單初始化爲0
conn = JDBC.getConnection();
String sql = "insert into user(phone,password,username,inblacklist)values('" + phone + "','" + password
+ "','" + username + "','" + isblacklist + "')";
stmt = conn.createStatement();
flag = stmt.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
} finally {
stmt.close();
conn.close();
}
if (flag == 0)
return ERROR;
return SUCCESS;
}
}
Action包下的 StrutsAction-User_login-validation.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
"-//Apache Struts//XWork Validator 1.0.3//EN"
"http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">
<validators>
<field name="user.phone">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>手機號不能爲空!</message>
</field-validator>
<field-validator type="regex">
<param name="regex"><![CDATA[^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$]]></param>
<message>請輸入正確的手機號</message>
</field-validator>
</field>
<field name="user.password">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>密碼不能爲空</message>
</field-validator>
<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="maxLength">20</param>
<message>密碼長度必須在6到20位之間</message>
</field-validator>
</field>
</validators>
Action包下的 StrutsAction-register_login-validation.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
"-//Apache Struts//XWork Validator 1.0.3//EN"
"http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">
<validators>
<field name="user.phone">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>手機號不能爲空!</message>
</field-validator>
<field-validator type="regex">
<param name="regex"><![CDATA[^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$]]></param>
<message>請輸入正確的手機號</message>
</field-validator>
</field>
<field name="user.username">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>用戶名不能爲空!</message>
</field-validator>
</field>
<field name="user.password">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>密碼不能爲空</message>
</field-validator>
<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="maxLength">20</param>
<message>密碼長度必須在6到20位之間</message>
</field-validator>
</field>
</validators>
domain包下的 JDBC.java
package domain;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class JDBC
{
public static Connection getConnection()
{
//加載數據庫驅動 com.mysql.jdbc.Driver
String driver = "com.mysql.cj.jdbc.Driver";
//獲取mysql連接地址ַ
String url = "jdbc:mysql://localhost:3306/Struts2?" +
"useUnicode=true&characterEncoding=utf8&" +
"useSSL=false&serverTimezone=UTC";
//數據名稱
String username = "root";
//數據庫密碼
String password = "258000";
//獲取一個數據的連接
Connection conn = null;
//獲取連接的一個狀態
try{
Class.forName(driver);
//getConnection()方法,連接MySQL數據庫!
conn=DriverManager.getConnection(url,username,password);
if(conn!=null)
System.out.println("mysql ok");
// conn.close();
}
catch(ClassNotFoundException e)//數據庫驅動類異常處理
{
System.out.println("數據庫驅動加載失敗!");
e.printStackTrace();
}
catch(SQLException e1) //數據庫連接失敗異常處理
{
System.out.println("數據庫連接異常1!");
e1.printStackTrace();
}
catch(Exception e2)
{
System.out.println("數據庫連接異常2!");
e2.printStackTrace();
}
finally
{
System.out.println("finally mysql ");
}
return conn;
}
}
domain包下的 User.java
package domain;
public class User
{
private String phone;
private String username;
private String password;
private int isblacklist;
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
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;
}
public int getIsblacklist() {
return isblacklist;
}
public void setIsblacklist(int isblacklist) {
this.isblacklist = isblacklist;
}
@Override
public String toString() {
return "User [phone=" + phone + ", username=" + username + ", password=" + password + ", isblacklist="
+ isblacklist + "]";
}
}
filter包下的 LoginFilter.java
package filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import domain.User;
public class LoginFilter extends HttpServlet implements Filter {
private static final long serialVersionUID = 1L;
public void doFilter(ServletRequest Request, ServletResponse Response, FilterChain filterChain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) Request;
HttpServletResponse response = (HttpServletResponse) Response;
HttpSession session = request.getSession();
String url = request.getServletPath();
String contextPath = request.getContextPath();
if (url.equals(""))
url += "/";
if ((url.startsWith("/") && !url.startsWith("/login"))) {
if(!url.startsWith("/register"))
{
// 若訪問後臺資源
// 過濾到login
User user = (User) session.getAttribute("user");
if (user == null) {// 轉入管理員登陸頁面
response.sendRedirect(contextPath + "/login.jsp");
return;
}
}
}
filterChain.doFilter(Request, Response);
}
public void init(FilterConfig arg0) throws ServletException {
}
}
sturts.xml配置
<?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>
<package name="action" extends="struts-default" namespace="/">
<!-- action配置 -->
<!-- 登錄 -->
<action name="User_login" class="action.StrutsAction" method="login">
<result name="input">login.jsp</result> <!-- 輸入錯誤重新到登錄頁面 -->
<result name="error">register_fail.jsp</result> <!-- 註冊失敗到註冊失敗頁面 -->
<result name="success">index.jsp</result> <!-- 註冊成功後到登錄頁面 -->
<result name="inblacklist">login_inblacklist.jsp</result> <!-- 若用戶在黑名單中就到黑名單頁面 -->
</action>
<!-- 註冊 -->
<action name="User_register" class="action.StrutsAction"
method="register">
<result name="input">register.jsp</result> <!-- 輸入錯誤重新到註冊頁面 -->
<result name="success">login.jsp</result> <!-- 註冊成功後到登錄頁面 -->
<result name="error">register_fail.jsp</result> <!-- 註冊失敗到註冊失敗頁面 -->
</action>
</package>
</struts>
web.xml配置:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>register.jsp</welcome-file>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<!-- Struts核心過濾器 -->
<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>
<!-- 實現頁面登錄過濾 -->
<filter>
<filter-name>loginFilter</filter-name>
<!-- 實現登錄過濾LoginFilter全路徑 -->
<filter-class>filter.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>loginFilter</filter-name>
<url-pattern>*.action</url-pattern>
<url-pattern>*.do</url-pattern>
<url-pattern>*.jsp</url-pattern>
<url-pattern>*.servlet</url-pattern>
<url-pattern>*.class</url-pattern>
<url-pattern>*.java</url-pattern>
</filter-mapping>
</web-app>
以下是jsp頁面:
login.jsp
<%@ 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>
<base href="<%=basePath%>">
<title>註冊</title>
<link rel="stylesheet" type="text/css" href="CSS/reset.css" />
<link rel="stylesheet" type="text/css" href="CSS/style.css" />
</head>
<body>
<div class="div2" style=" background:url('CSS/image/login.jpg')">
<h1>LOGIN</h1>
<div class="div1">
<s:form cssClass="form" action="User_login" namespace="/" method="post" >
<table>
<tr>
<s:textfield name="user.phone" cssClass="input" placeholder="phone"
type="text"></s:textfield>
</tr>
<tr>
<s:password name="user.password" cssClass="input"
placeholder="password" type="password"></s:password>
</tr>
<tr>
<s:submit value="登錄" type="submit" cssClass="input"></s:submit>
</tr>
</table>
</s:form>
<a href="register.jsp">註冊賬號</a>
</div>
</div>
</body>
</html>
register.jsp
<%@ 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>
<base href="<%=basePath%>">
<title>註冊</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="CSS/reset.css" />
<link rel="stylesheet" type="text/css" href="CSS/style.css" />
</head>
<body>
<div class="div2" style=" background:url('CSS/image/login.jpg')">
<h1>Register</h1>
<div class="div1">
<s:form cssClass="form" action="User_register" namespace="/" method="post">
<table Class="table">
<tr>
<s:textfield cssClass="input" name="user.phone"
placeholder="phone" type="nunber"></s:textfield>
</tr>
<tr>
<s:textfield cssClass="input" name="user.username"
placeholder="username" type="text"></s:textfield>
</tr>
<tr>
<s:textfield cssClass="input" name="user.password"
placeholder="password" type="password">
</s:textfield>
</tr>
<tr>
<s:textfield cssClass="input" type="submit" value="提交"></s:textfield>
</tr>
</table>
</s:form>
<a href="login.jsp">我要登錄</a>
</div>
</div>
</body>
</html>