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导包

配xml：Mybatais.xml  Spring-MyBatis.xml  SpringMvc-Servlet  web.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:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.2.xsd
	http://www.springframework.org/schema/aop
	http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">


	<!-- 配置数据源 -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		scope="singleton">
		<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
		<property name="url" value="jdbc:mysql://127.0.0.1:3306/smbms?useUnicode=true&amp;characterEncoding=utf-8"></property>
		<property name="username" value="root"></property>
		<property name="password" value="root"></property>
	</bean>

	<!-- 配置sqlSessionFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!--		&lt;!&ndash;加载Mybatis的映射文件 &ndash;&gt;-->
<!--		<property name="mapperLocations">-->
<!--			&lt;!&ndash;           逐一配置&ndash;&gt;-->
<!--			&lt;!&ndash;            <value>classpath:homework_03/dao/provider/ProviderMapper.xml</value>&ndash;&gt;-->
<!--			&lt;!&ndash; 通配符加载 &ndash;&gt;-->
<!--			<value>/dao/**/*.xml</value>-->
<!--		</property>-->
	</bean>

	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="dao.*"/>
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
	</bean>

	<!--配置让其自动扫码指定的包下的注解  -->
	<context:component-scan base-package="service.*"></context:component-scan>
</beans>

<?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>
	

	<!-- 用来对MyBatis的运行进行全局性设置 -->
	<settings>
		<setting name="lazyLoadingEnabled" value="false" />
	</settings>

	<!-- 配置开发环境 -->
	<typeAliases>
		<!-- <typeAlias type="com.oupeng.pojo.User" alias="u" /> -->
		<package name="pojo"/>
	</typeAliases>



</configuration>

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:p="http://www.springframework.org/schema/p"
    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/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
      
     <!-- 配置静态资源的访问 -->

	<mvc:resources location="/statics/" mapping="/statics/**"></mvc:resources>

	<!-- 配置springmvc的视图解析器 -->
	<bean id="name"
	class="org.springframework.web.servlet.view.InternalResourceViewResolver">

	<property name="prefix" value="/view/"></property>
	<property name="suffix" value=".jsp"></property>
	</bean>

	<!--补充mvc的配置  -->
	<mvc:annotation-driven />
	
	<!-- 增加对控制器所在包的扫描 -->
	<context:component-scan base-package="controller"></context:component-scan>
	
	<!-- 全局异常 -->
	<!-- <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
		<property name="exceptionMappings">
		<props>
		<prop key="java.lang.RuntimeException">
			error
		</prop>
		</props>
		</property>
	</bean> -->
</beans>

Jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>系统登录 - 物资批发订单管理系统</title>
    <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/statics/css/style.css" />
    <script type="text/javascript">
	/* if(top.location!=self.location){
	      top.location=self.location;
	 } */
    </script>
</head>
<body class="login_bg">
    <section class="loginBox">
        <header class="loginHeader">
            <h1>物资批发订单管理系统</h1>
        </header>
        <section class="loginCont">
	        <form class="loginForm" action="${pageContext.request.contextPath }/dologin.html"  name="actionForm" id="actionForm"  method="post" >
				<div class="info">${login_error}</div>
				<div class="inputbox">
                    <label for="user">用户名：</label>
					<input type="text" class="input-text" id="userCode" name="userCode" placeholder="请输入用户名" required/>
				</div>	
				<div class="inputbox">
                    <label for="mima">密码：</label>
                    <input type="password" id="userPassword" name="userPassword" placeholder="请输入密码" required/>
                </div>

				<div class="subBtn">
                    <input type="submit" value="登录"/>
                    <input type="reset" value="重置"/>
                </div>	
			</form>
        </section>
    </section>
</body>
</html>

Controller

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;


import pojo.User;
import service.user.UserService;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.PageContext;

@Controller
public class LoginController {
    @Resource
    private UserService userService;


    @RequestMapping(value="/logout.html")
    public String frame( HttpSession session){
        session.removeAttribute("userSession");
        return "login";
    }

    @RequestMapping(value="/dologin.html",method=RequestMethod.POST)
    public String dologin(String userCode, String userPassword, HttpSession session) {
        if(userService.getUserServiceByUserCode(userCode)!=null){
            User user=userService.isTrueService(userCode,userPassword);
            if (user!=null) {
                session.setAttribute("userSession",user);
                session.removeAttribute("login_error");
                return "frame";
            }
        }
        session.setAttribute("login_error","账号或密码不正正确");
        return "login";
    }

}

实体类 略

service层直接调用dao层的方法 略 

dao层 方法声明 略 

dao层的方法实现

<?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="dao.user.UserMapper">


    <select id="getUserAll" resultType="User">
        SELECT * FROM smbms_user;
    </select>


    <!--    通过userCode修改用户-->
    <select id="getUserByUserCode" resultType="User">
        SELECT * FROM smbms_user WHERE  userCode = #{userCode};
    </select>


    <!--登录-->
    <select id="isTrue" resultType="User">
        SELECT * FROM smbms_user WHERE  userCode = #{userCode} AND userPassword = #{userPassword};
    </select>

<!--通过用户名修改密码-->
    <update id="updateUserPasswordById">
        UPDATE smbms_user SET userPassword = #{userPassword} WHERE id = #{id};
    </update>


    <update id="updateUserById" >
        UPDATE smbms_user
        SET userPassword = #{user.userPassword}
            ,userCode = #{user.userCode}
            ,userName = #{user.userName}
        WHERE id = #{id};
    </update>

    <delete id="deleteUserById">
        DELETE FROM `smbms_user` WHERE id=#{29};
    </delete>