大家好，又见面了，我是你们的朋友全栈君。

使用环境：MyEclipse/Eclipse + Tomcat + MySql。

使用技术：SpringMVC + Spring + Mybatis。

实现效果

登录页面：

密码错误提示

登录成功后

注册

注册成功

目录结构

一、配置文件

beans.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.java.dao"></context:component-scan>  
<context:component-scan base-package="com.java.service"></context:component-scan>  
<context:component-scan base-package="com.java.serviceimpl"></context:component-scan>
<!-- 配置mysql连接 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<context:property-placeholder location="classpath:/jdbc.properties"/>
<!-- 配置mybatis的SQLSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- 自动扫描mappers.xml文件 -->
<property name="mapperLocations" value="classpath:com/java/mappers/*.xml"></property>
<!-- mybatis配置文件 -->
<property name="configLocation" value="classpath:mybatis-config.xml "></property>
</bean>
<!-- spring自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.java.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>  
</beans>

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 对entity下的实体类起个别名，起到简化的作用 -->
<typeAliases>
<package name="com.java.entity"></package>
</typeAliases>
</configuration>

springmvc.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 使用注解的包，包括子集 --> 
<context:component-scan base-package="com.java.controller"/>
<!-- 视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

jdbc.properties

jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db_student?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC
jdbc.username=root
jdbc.password=root

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance http://www.springmodules.org/schema/cache/springmodules-cache.xsd http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd" 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_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>mybatis06-spring-springmvc</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 对spring的支持 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:beans.xml</param-value>
</context-param>
<!-- 过滤器 -->
<filter> 
<filter-name>characterEncodingFilter</filter-name> 
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 
<init-param> 
<param-name>encoding</param-name> 
<param-value>UTF-8</param-value> 
</init-param> 
<init-param> 
<param-name>forceEncoding</param-name> 
<param-value>true</param-value> 
</init-param> 
</filter> 
<filter-mapping> 
<filter-name>characterEncodingFilter</filter-name> 
<url-pattern>/*</url-pattern> 
</filter-mapping> 
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 对springmvc的支持 -->
<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.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>

二、Java代码

1、com.java.entity

User.java

package com.java.entity;
public class User { 

private Integer id;
private String userName;
private String passWord;
// 无参构造
public User() { 

super();
}
// 全参构造
public User(String userName, String passWord) { 

super();
this.userName = userName;
this.passWord = passWord;
}
//get、set方法
public Integer getId() { 

return id;
}
public void setId(Integer id) { 

this.id = id;
}
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;
}
// toString方法
@Override
public String toString() { 

return "User [id=" + id + ", userName=" + userName + ", passWord=" + passWord + "]";
}
}

2、com.java.dao

UserDao.java

package com.java.dao;
import com.java.entity.User;
public interface UserDao { 

public User login(User user);
public User add(User user);
}

3、com.java.mappers

user.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.java.dao.UserDao">
<resultMap type="com.java.entity.User" id="UserResult">
<id property="id" column="id"></id>
<result property="userName" column="userName"></result>
<result property="passWord" column="passWord"></result>
</resultMap>
<select id="login" parameterType="com.java.entity.User" resultMap="UserResult">
select * from user where userName=#{userName} and passWord=#{passWord}
</select>
<select id="add" parameterType="com.java.entity.User" resultMap="UserResult">
insert into user (userName,passWord) values(#{userName},#{passWord})
</select>
</mapper>

4、com.java.controller

UserController.java

package com.java.controller;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.java.entity.User;
import com.java.service.UserService;
@Controller
@RequestMapping("/user")
public class UserController { 

@Resource
private UserService userService;
@RequestMapping("/login")
public String login(User user,HttpServletRequest request) { 

User resultUser=userService.login(user);
System.out.println(resultUser);
if(resultUser==null) { 

request.setAttribute("user", user);
request.setAttribute("errorMsg", "用户名或密码错误！");
return "index";
}else { 

HttpSession session=request.getSession();
session.setAttribute("currentUser", resultUser);
return "welcome";
}
}
@RequestMapping("/add")
public String add(HttpServletRequest request,HttpServletResponse response){ 

response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
String username=request.getParameter("userName");
String password=request.getParameter("passWord");
User users=new User(username, password);
userService.add(users);
return "reback";
}
}

5、com.java.service

UserService.java

package com.java.service;
import com.java.entity.User;
public interface UserService { 

public User login(User user);
public User add(User user);
}

6、com.java.serviceimpl

ServiceImpl.java

package com.java.serviceimpl;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.java.dao.UserDao;
import com.java.entity.User;
import com.java.service.UserService;
@Service("userService")
public class ServiceImpl implements UserService{ 

@Resource
private UserDao userDao;
public User login(User user) { 

return userDao.login(user);
}
public User add(User user) { 

return userDao.add(user);
}
}

三、Jsp页面代码

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户登录页面</title>
</head>
<body>
<a href="add.jsp">注册</a>&nbsp;<br/>
<form action="${pageContext.request.contextPath}/user/login.do" method="post">
userName:<input type="text" name="userName" value="${userName}"/><br/>
passWord:<input type="password" name="passWord" value="${passWord}"/><br/>
<input type="submit" value="登录"/><br/>
<font color="red">${errorMsg}</font>
</form>
</body>
</html>

welcome.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录成功</title>
</head>
<body>
欢迎   ${currentUser.userName} 来到我们的世界！
</body>
</html>

reback.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录成功</title>
<script> function fun(){ 
 alert("确认返回登录页面"); /* location.href ="http://localhost:8080/mybatis06-spring-springmvc/index.jsp"; */ window.history.go(-2); } </script>
</head>
<body>
<input type="button" value="注册成功，返回登录页面" onclick="fun()"/>
</body>
</html>

add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/user/add.do" method="post">
userName:<input type="text" name="userName"/>
passWord:<input type="password" name="passWord"><br/>
<input type="submit" value="注册" />
</form>
</body>
</html>

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SpringMVC+Spring+Mybatis实现登录注册Demo「建议收藏」

实现效果

目录结构

一、配置文件

beans.xml

mybatis-config.xml

springmvc.xml

jdbc.properties

web.xml

二、Java代码

1、com.java.entity

User.java

2、com.java.dao

UserDao.java

3、com.java.mappers

user.xml

4、com.java.controller

UserController.java

5、com.java.service

UserService.java

6、com.java.serviceimpl

ServiceImpl.java

三、Jsp页面代码

index.jsp

welcome.jsp

reback.jsp

add.jsp

发表回复

SpringMVC+Spring+Mybatis实现登录注册Demo「建议收藏」

实现效果

目录结构

一、配置文件

beans.xml

mybatis-config.xml

springmvc.xml

jdbc.properties

web.xml

二、Java代码

1、com.java.entity

User.java

2、com.java.dao

UserDao.java

3、com.java.mappers

user.xml

4、com.java.controller

UserController.java

5、com.java.service

UserService.java

6、com.java.serviceimpl

ServiceImpl.java

三、Jsp页面代码

index.jsp

welcome.jsp

reback.jsp

add.jsp

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