如何使用spring-springmvc-jdbc實現使用者登入？
阿新 • • 發佈：2019-02-09
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>mvc01</display-name> <!--直接在位址列輸入 工程名 就可以自動跳轉到下面login頁面 --> <welcome-file-list> <welcome-file>/WEB-INF/jsp/login.jsp</welcome-file> </welcome-file-list> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> </web-app>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <!-- spring掃描包下面所有的類，對註解的支援 --> <context:component-scan base-package="cn.kgc.service"></context:component-scan> <context:component-scan base-package="cn.kgc.dao"></context:component-scan> </beans>
springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <!-- 對控制器註解進行支援 --> <context:component-scan base-package="cn.kgc.controller"></context:component-scan> <mvc:annotation-driven></mvc:annotation-driven> <!-- 靜態資源的檔案 --> <mvc:resources location="/statics/" mapping="/statics/**"/> <!-- 配置檢視解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
UserController.java
package cn.kgc.controller;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import cn.kgc.pojo.User;
import cn.kgc.service.UserService;
import cn.kgc.tools.Constans;
@Controller
@RequestMapping("/user")
public class UserController{
private Logger logger=Logger.getLogger(UserController.class);
@Resource
private UserService userService;
@RequestMapping(value="/login.html")
public String login(){
return "login";
}
@RequestMapping(value="/dologin.html",method=RequestMethod.POST)
public String doLogin(@RequestParam String userCode,@RequestParam String userPassword,HttpServletRequest request,HttpSession session){
User user=userService.login(userCode,userPassword);
System.out.println(user);
if(user!=null){
session.setAttribute(Constans.USER_SESSION, user);
/* return "redirect:/user/main.html";*/
return "frame";
//response.sendRedirect("jsp/aa.jsp")
}else{
request.setAttribute("error", "使用者名稱和密碼錯誤");
return "login";
}
}
@RequestMapping(value="/main.html")
public String main(){
return "frame";
}
@RequestMapping(value="/exist.html")
public String exist(HttpSession session){
session.invalidate();
return "redirect:/user/exist1.html";
}
@RequestMapping("exist1.html")
public String exist1(){
return "login";
}
}
BaseDao.java
package cn.kgc.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import cn.kgc.tools.ConfigManager;
/**
* 操作資料庫的基類--靜態類
* @author Administrator
*
*/
public class BaseDao {
/**
* 獲取資料庫連線
* @return
*/
public static Connection getConnection(){
Connection connection = null;
String driver = ConfigManager.getInstance().getValue("driver");
String url = ConfigManager.getInstance().getValue("url");
String user = ConfigManager.getInstance().getValue("user");
String password = ConfigManager.getInstance().getValue("password");
try {
//載入驅動
Class.forName(driver);
//獲得連線物件
connection = DriverManager.getConnection(url, user, password);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return connection;
}
/**
* 查詢操作
* @param connection
* @param pstm
* @param rs
* @param sql
* @param params
* @return
*/
public static ResultSet execute(Connection connection,PreparedStatement pstm,
ResultSet rs,String sql,Object[] params) throws Exception{
//獲得preparedStatement物件
pstm = connection.prepareStatement(sql);
//將陣列中的陣列元素依次放入pstm中
for(int i = 0; i < params.length; i++){
pstm.setObject(i+1, params[i]);
}
//呼叫無參查詢方法，得到結果集
rs = pstm.executeQuery();
return rs;
}
/**
* 更新操作
* @param connection
* @param pstm
* @param sql
* @param params
* @return
* @throws Exception
*/
public static int execute(Connection connection,PreparedStatement pstm,
String sql,Object[] params) throws Exception{
int updateRows = 0;
pstm = connection.prepareStatement(sql);
for(int i = 0; i < params.length; i++){
pstm.setObject(i+1, params[i]);
}
updateRows = pstm.executeUpdate();
return updateRows;
}
/**
* 釋放資源
* @param connection
* @param pstm
* @param rs
* @return
*/
public static boolean closeResource(Connection connection,PreparedStatement pstm,ResultSet rs){
boolean flag = true;
if(rs != null){
try {
rs.close();
rs = null;//GC回收
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
flag = false;
}
}
if(pstm != null){
try {
pstm.close();
pstm = null;//GC回收
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
flag = false;
}
}
if(connection != null){
try {
connection.close();
connection = null;//GC回收
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
flag = false;
}
}
return flag;
}
}
UserDao.java
package cn.kgc.dao;
import java.sql.Connection;
import cn.kgc.pojo.User;
public interface UserDao {
public User getLoginUser(Connection connection,String userCode)throws Exception;
}
UserDaoImpl.java
package cn.kgc.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import org.springframework.stereotype.Repository;
import cn.kgc.pojo.User;
@Repository
public class UserDaoImpl implements UserDao {
@Override
public User getLoginUser(Connection connection, String userCode)
throws Exception {
// TODO Auto-generated method stub
PreparedStatement pstm=null;
ResultSet rs=null;
User user=null;
if(connection!=null){
String sql="select * from smbms_user where userCode=?";
Object[] params={userCode};
rs=BaseDao.execute(connection, pstm, rs, sql, params);
System.out.println(rs);
while(rs.next()){
user=new User();
user.setId(rs.getInt("id"));
user.setUserCode(rs.getString("userCode"));
user.setUserName(rs.getString("userName"));
user.setUserPassword(rs.getString("userPassword"));
user.setGender(rs.getInt("gender"));
user.setBirthday(rs.getDate("birthday"));
user.setPhone(rs.getString("phone"));
user.setAddress(rs.getString("address"));
user.setUserRole(rs.getInt("userRole"));
user.setCreatedBy(rs.getInt("createdBy"));
user.setCreationDate(rs.getTimestamp("creationDate"));
user.setModifyBy(rs.getInt("modifyBy"));
user.setModifyDate(rs.getTimestamp("modifyDate"));
}
BaseDao.closeResource(null, pstm, rs);
}
return user;
}
}
User.java
package cn.kgc.pojo;
import java.util.Date;
public class User {
private Integer id; // id
private String userCode; // 使用者編碼
private String userName; // 使用者名稱稱
private String userPassword; // 使用者密碼
private Integer gender; // 性別
private Date birthday; // 出生日期
private String phone; // 電話
private String address; // 地址
private Integer userRole; // 使用者角色ID
private Integer createdBy; // 建立者
private Date creationDate; // 建立時間
private Integer modifyBy; // 更新者
private Date modifyDate; // 更新時間
private String userRoleName; // 使用者角色名稱
public User(){}
public User(Integer id, String userCode, String userName,
String userPassword, Integer gender, Date birthday,
String phone, String address, Integer userRole,
Integer createdBy, Date creationDate, Integer modifyBy,
Date modifyDate, String userRoleName) {
super();
this.id = id;
this.userCode = userCode;
this.userName = userName;
this.userPassword = userPassword;
this.gender = gender;
this.birthday = birthday;
this.phone = phone;
this.address = address;
this.userRole = userRole;
this.createdBy = createdBy;
this.creationDate = creationDate;
this.modifyBy = modifyBy;
this.modifyDate = modifyDate;
this.userRoleName = userRoleName;
}
public Integer getId() {
return id;
}
public String getUserCode() {
return userCode;
}
public String getUserName() {
return userName;
}
public String getUserPassword() {
return userPassword;
}
public Integer getGender() {
return gender;
}
public Date getBirthday() {
return birthday;
}
public String getPhone() {
return phone;
}
public String getAddress() {
return address;
}
public Integer getUserRole() {
return userRole;
}
public Integer getCreatedBy() {
return createdBy;
}
public Date getCreationDate() {
return creationDate;
}
public Integer getModifyBy() {
return modifyBy;
}
public Date getModifyDate() {
return modifyDate;
}
public String getUserRoleName() {
return userRoleName;
}
public void setId(Integer id) {
this.id = id;
}
public void setUserCode(String userCode) {
this.userCode = userCode;
}
public void setUserName(String userName) {
this.userName = userName;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public void setPhone(String phone) {
this.phone = phone;
}
public void setAddress(String address) {
this.address = address;
}
public void setUserRole(Integer userRole) {
this.userRole = userRole;
}
public void setCreatedBy(Integer createdBy) {
this.createdBy = createdBy;
}
public void setCreationDate(Date creationDate) {
this.creationDate = creationDate;
}
public void setModifyBy(Integer modifyBy) {
this.modifyBy = modifyBy;
}
public void setModifyDate(Date modifyDate) {
this.modifyDate = modifyDate;
}
public void setUserRoleName(String userRoleName) {
this.userRoleName = userRoleName;
}
}
UserService.java
package cn.kgc.service;
import cn.kgc.pojo.User;
public interface UserService {
//使用者登入
public User login(String userCode,String userPassword);
}
UserServiceImpl.java
package cn.kgc.service;
import java.sql.Connection;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import cn.kgc.dao.BaseDao;
import cn.kgc.dao.UserDao;
import cn.kgc.pojo.User;
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserDao userDao;
@Override
public User login(String userCode, String userPassword) {
// TODO Auto-generated method stub
Connection connection=null;
User user=null;
try{
connection=BaseDao.getConnection();
user=userDao.getLoginUser(connection,userCode);
}catch (Exception e){
e.printStackTrace();
}finally{
BaseDao.closeResource(connection, null, null);
}
if(user!=null){
//匹配密碼
if(!user.getUserPassword().equals(userPassword)){
user=null;
}
}
return user;
}
}
ConfigManager.java
package cn.kgc.tools;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
//讀取配置檔案的工具類-單例模式
public class ConfigManager {
private static ConfigManager configManager = new ConfigManager();
private static Properties properties;
//私有構造器-讀取資料庫配置檔案
private ConfigManager(){
String configFile = "database.properties";
properties = new Properties();
InputStream is =
ConfigManager.class.getClassLoader().getResourceAsStream(configFile);
try {
properties.load(is);
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/*//全域性訪問點-(懶漢模式)
public static synchronized ConfigManager getInstance(){
if(configManager == null){
configManager = new ConfigManager();
}
return configManager;
}*/
//餓漢模式
public static ConfigManager getInstance(){
return configManager;
}
public String getValue(String key){
return properties.getProperty(key);
}
}
Constans.java
package cn.kgc.tools;
public class Constans {
public final static String USER_SESSION="userSession";
}
login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>系統登入 - 超市訂單管理系統</title>
<link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath }/statics/css/style.css" />
<script type="text/javascript">
/* if(top.location!=self.location){
top.location=self.location;
} */
</script>
</head>
<body class="login_bg">
<section class="loginBox">
<header class="loginHeader">
<h1>超市訂單管理系統</h1>
</header>
<section class="loginCont">
<form class="loginForm" action="${pageContext.request.contextPath }/user/dologin.html" name="actionForm" id="actionForm" method="post" >
<div class="info">${error }</div>
<div class="inputbox">
<label for="user">使用者名稱：</label>
<input type="text" class="input-text" id="userCode" name="userCode" placeholder="請輸入使用者名稱" required/>
</div>
<div class="inputbox">
<label for="mima">密碼：</label>
<input type="password" id="userPassword" name="userPassword" placeholder="請輸入密碼" required/>
</div>
<div class="subBtn">
<input type="submit" value="登入"/>
<input type="reset" value="重置"/>
</div>
</form>
</section>
</section>
</body>
</html>
frame.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@include file="/WEB-INF/jsp/common/head.jsp"%>
<!-- /WEB-INF/jsp/ -->
<div class="right">
<img class="wColck" src="${pageContext.request.contextPath }/statics/images/clock.jpg" alt=""/>
<div class="wFont">
<h2>${userSession.userName }</h2>
<p>歡迎來到超市訂單管理系統!</p>
</div>
</div>
</section>
<%@include file="/WEB-INF/jsp/common/foot.jsp" %>