利用IDEA搭建SpringBoot项目整合mybatis实现简单登录功能的方法

<&#63;xml version="1.0" encoding="UTF-8"&#63;>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
 
	<groupId>com.example</groupId>
	<artifactId>springboottest1</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>
 
	<name>springboottest1</name>
	<description>Demo project for Spring Boot</description>
 
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
 
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>
 
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.2</version>
		</dependency>
 
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
 
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
 
 
</project>

server:
 port: 8080
 
spring:
 datasource:
 name: test
 url: jdbc:mysql://127.0.0.1:3306/test
 username: root
 password: 123456
 driver-class-name: com.mysql.jdbc.Driver

server:
 port: 8080
 
spring:
 datasource:
 name: test
 url: jdbc:mysql://127.0.0.1:3306/test
 username: root
 password: 123456
 driver-class-name: com.mysql.jdbc.Driver
 
mybatis:
 mapper-locations: classpath:mapper/*.xml #注意：一定要对应mapper映射xml文件的所在路径
 type-aliases-package: com.example.springboottest1.entity # 注意：对应实体类的路径

<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<!-- mybatis generator 自动生成代码插件 -->
			<plugin>
				<groupId>org.mybatis.generator</groupId>
				<artifactId>mybatis-generator-maven-plugin</artifactId>
				<version>1.3.1</version>
				<configuration>
					<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
					<overwrite>true</overwrite>
					<verbose>true</verbose>
				</configuration>
			</plugin>
		</plugins>
	</build>

<&#63;xml version="1.0" encoding="UTF-8"&#63;>
<!DOCTYPE generatorConfiguration
 PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
 "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
 <!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->
 <classPathEntry location="C:\Program Files (x86)\MySQL\Connector.J 5.1\mysql-connector-java-5.1.36-bin.jar"/>
 <context id="DB2Tables" targetRuntime="MyBatis3">
 <commentGenerator>
  <property name="suppressDate" value="true"/>
  <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
  <property name="suppressAllComments" value="false"/>
 </commentGenerator>
 <!--数据库连接驱动类,URL，用户名、密码 -->
 <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1/test" userId="root" password="123456">
 </jdbcConnection>
 <javaTypeResolver>
  <property name="forceBigDecimals" value="false"/>
 </javaTypeResolver>
 <!-- 生成(实体)模型的包名和位置-->
 <javaModelGenerator targetPackage="com.example.springboottest1.entity" targetProject="src">
  <property name="enableSubPackages" value="true"/>
  <property name="trimStrings" value="true"/>
 </javaModelGenerator>
 <!-- 生成XML映射文件的包名和位置-->
 <sqlMapGenerator targetPackage="resources.mapper" targetProject="src">
  <property name="enableSubPackages" value="true"/>
 </sqlMapGenerator>
 <!-- 生成DAO接口的包名和位置-->
 <javaClientGenerator type="XMLMAPPER" targetPackage="com.example.springboottest1.mapper" targetProject="src">
  <property name="enableSubPackages" value="true"/>
 </javaClientGenerator>
 <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->
 <table tableName="user" domainObjectName="user" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
 </context>
</generatorConfiguration>

package com.example.springboottest1.entity;
 
public class user {
 /**
 * This field was generated by MyBatis Generator.
 * This field corresponds to the database column user.id
 *
 * @mbggenerated
 */
 private Integer id;
 
 /**
 * This field was generated by MyBatis Generator.
 * This field corresponds to the database column user.username
 *
 * @mbggenerated
 */
 private String username;
 
 /**
 * This field was generated by MyBatis Generator.
 * This field corresponds to the database column user.password
 *
 * @mbggenerated
 */
 private String password;
 
 /**
 * This field was generated by MyBatis Generator.
 * This field corresponds to the database column user.age
 *
 * @mbggenerated
 */
 private Integer age;
 
 /**
 * This method was generated by MyBatis Generator.
 * This method returns the value of the database column user.id
 *
 * @return the value of user.id
 *
 * @mbggenerated
 */
 public Integer getId() {
 return id;
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method sets the value of the database column user.id
 *
 * @param id the value for user.id
 *
 * @mbggenerated
 */
 public void setId(Integer id) {
 this.id = id;
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method returns the value of the database column user.username
 *
 * @return the value of user.username
 *
 * @mbggenerated
 */
 public String getUsername() {
 return username;
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method sets the value of the database column user.username
 *
 * @param username the value for user.username
 *
 * @mbggenerated
 */
 public void setUsername(String username) {
 this.username = username == null ? null : username.trim();
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method returns the value of the database column user.password
 *
 * @return the value of user.password
 *
 * @mbggenerated
 */
 public String getPassword() {
 return password;
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method sets the value of the database column user.password
 *
 * @param password the value for user.password
 *
 * @mbggenerated
 */
 public void setPassword(String password) {
 this.password = password == null ? null : password.trim();
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method returns the value of the database column user.age
 *
 * @return the value of user.age
 *
 * @mbggenerated
 */
 public Integer getAge() {
 return age;
 }
 
 /**
 * This method was generated by MyBatis Generator.
 * This method sets the value of the database column user.age
 *
 * @param age the value for user.age
 *
 * @mbggenerated
 */
 public void setAge(Integer age) {
 this.age = age;
 }
}

package com.example.springboottest1.mapper;
 
import com.example.springboottest1.entity.user;
 
public interface userMapper {
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 int deleteByPrimaryKey(Integer id);
 
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 int insert(user record);
 
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 int insertSelective(user record);
 
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 user selectByPrimaryKey(Integer id);
 
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 int updateByPrimaryKeySelective(user record);
 
 /**
 * This method was generated by MyBatis Generator.
 * This method corresponds to the database table user
 *
 * @mbggenerated
 */
 int updateByPrimaryKey(user record);
}

<&#63;xml version="1.0" encoding="UTF-8" &#63;>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.springboottest1.mapper.userMapper" >
 <resultMap id="BaseResultMap" type="com.example.springboottest1.entity.user" >
 <!--
 WARNING - @mbggenerated
 This element is automatically generated by MyBatis Generator, do not modify.
 -->
 <id column="id" property="id" jdbcType="INTEGER" />
 <result column="username" property="username" jdbcType="VARCHAR" />
 <result column="password" property="password" jdbcType="VARCHAR" />
 <result column="age" property="age" jdbcType="INTEGER" />
 </resultMap>
 <sql id="Base_Column_List" >
 id,
 username,
 password,
 age
 </sql>
 <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
 select
 <include refid="Base_Column_List" />
 from user
 where id = #{id,jdbcType=INTEGER}
 </select>
 <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
 delete from user
 where id = #{id,jdbcType=INTEGER}
 </delete>
 <insert id="insert" parameterType="com.example.springboottest1.entity.user" >
 insert into user (id, username, password, age)
 values (
 #{id,jdbcType=INTEGER},
 #{username,jdbcType=VARCHAR},
 #{password,jdbcType=VARCHAR},
 #{age,jdbcType=INTEGER})
 </insert>
 <insert id="insertSelective" parameterType="com.example.springboottest1.entity.user" >
 insert into user
 <trim prefix="(" suffix=")" suffixOverrides="," >
 <if test="id != null" >
  id,
 </if>
 <if test="username != null" >
  username,
 </if>
 <if test="password != null" >
  password,
 </if>
 <if test="age != null" >
  age,
 </if>
 </trim>
 <trim prefix="values (" suffix=")" suffixOverrides="," >
 <if test="id != null" >
  #{id,jdbcType=INTEGER},
 </if>
 <if test="username != null" >
  #{username,jdbcType=VARCHAR},
 </if>
 <if test="password != null" >
  #{password,jdbcType=VARCHAR},
 </if>
 <if test="age != null" >
  #{age,jdbcType=INTEGER},
 </if>
 </trim>
 </insert>
 <update id="updateByPrimaryKeySelective" parameterType="com.example.springboottest1.entity.user" >
 update user
 <set >
 <if test="username != null" >
  username = #{username,jdbcType=VARCHAR},
 </if>
 <if test="password != null" >
  password = #{password,jdbcType=VARCHAR},
 </if>
 <if test="age != null" >
  age = #{age,jdbcType=INTEGER},
 </if>
 </set>
 where id = #{id,jdbcType=INTEGER}
 </update>
 <update id="updateByPrimaryKey" parameterType="com.example.springboottest1.entity.user" >
 update user
 set username = #{username,jdbcType=VARCHAR},
 password = #{password,jdbcType=VARCHAR},
 age = #{age,jdbcType=INTEGER}
 where id = #{id,jdbcType=INTEGER}
 </update>
</mapper>

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>HelloWord</title>
</head>
<body>
<h2>hello springboot!!!</h2>
</body>
</html>

package com.example.springboottest1.controller;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
 
@Controller
@RequestMapping(value = {"/hello"})
public class helloController {
 
 @RequestMapping(value = {"/springboot"})
 public String hello(){
 return "HelloWord";
 }
}

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>用户登录</title>
</head>
<body>
请输入用户名与密码登录
<form action="/user/userLogin" method="post">
 用户名：<input type="text" name="username" /><br>
 密&nbsp;&nbsp;&nbsp;码：<input type="password" name="password" /><br>
 <input type="submit" value="登录" />
 <a href="/user/registerpage" target="_blank">注册</a>
</form>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>注册</title>
</head>
<body>
<form action="/user/uregister" method="post">
 用户名:<input type="text" name="username" /></br>
 密码:<input type="password" name="password" /></br>
 确认密码:<input type="password" name="password2" /></br>
 年龄:<input type="text" name="age" /></br>
 <input type="submit" value="注册">
</form>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>登录成功</title>
</head>
<body>
<h2>用户名与密码正确，登录成功！！！</h2>
 
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>登录失败</title>
</head>
<body>
<h2>用户名或密码错误，登录失败！！！</h2>
</body>
</html>

<&#63;xml version="1.0" encoding="UTF-8" &#63;>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.springboottest1.mapper.userMapper" >
 
 <!--用户登录验证-->
 <select id="userlogin" parameterType="user" resultType="User">
 SELECT id,username,password,age FROM user WHERE username = #{username} AND password = #{password}
 </select>
 
 <!--新用户注册 方式1-->
 <insert id="adduser" parameterType="user" useGeneratedKeys="true" keyProperty="id">
 INSERT INTO user (username,password,age) VALUES (#{username},#{password},#{age})
 </insert>
 
 <!--新用户注册 方式2-->
 <insert id="adduser1" parameterType="user">
 INSERT INTO user (id,username,password,age) VALUES (UUID(),#{username},#{password},#{age})
 </insert>
 
</mapper>

package com.example.springboottest1.mapper;
 
import com.example.springboottest1.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Component;
 
import java.util.Map;
 
@Mapper
@Component
public interface userMapper {
 
 //用户登录
 User userlogin(@Param("username") String username,@Param("password") String password);
 
 //注册新用户(方式1)
 int adduser(@Param("username") String username, @Param("password") String password, @Param("age") int age);
 
 //注册新用户（方式2）
 int adduser1(@Param("username") String username, @Param("password") String password, @Param("age") int age);
}

package com.example.springboottest1.service;
 
import com.example.springboottest1.entity.User;
import com.example.springboottest1.mapper.userMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import java.util.Map;
 
@Service
public class UserLoginService {
 
 /**
 * 注入dao
 */
 @Autowired
 private userMapper usermapper;
 
 //用户登录
 public User userLogin(String username,String password){
 User user = usermapper.userlogin(username,password);
 return user;
 }
 
 //注册新用户
 public int adduser(String username,String password,int age){
 
 
 return usermapper.adduser(username,password,age);
 //return usermapper.adduser1(username,password,age); //对应sql语句中的第二种注册方式
 }
}

package com.example.springboottest1.controller;
 
import com.example.springboottest1.entity.User;
import com.example.springboottest1.service.UserLoginService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
 
import javax.servlet.http.HttpServletRequest;
 
@Controller
@RequestMapping(value = {"/user"})
public class UserLoginController {
 
 /**
 * 注入service
 */
 @Autowired
 private UserLoginService userLoginService;
 
 /**
 * 跳转到用户登录页面
 * @return 登录页面
 */
 @RequestMapping(value = {"/loginHtml"})
 public String loginHtml(){
 return "userLogin";
 }
 
 /**
 * 跳转到用户注册页面
 * @return 注册页面
 */
 @RequestMapping(value = {"/registerpage"})
 public String registerpage(){
 return "register";
 }
 
 /**
 * 获取用户名与密码，用户登录
 * @return 登录成功页面
 */
 @RequestMapping(value = {"/userLogin"})
 public String userLogin(@RequestParam("username") String username, @RequestParam("password") String password, HttpServletRequest request){
 
 User user = userLoginService.userLogin(username,password);
 
 if(user != null){       //登录成功
  request.getSession().setAttribute("session_user",user); //将用户信息放入session
  return "index";
 }
 return "loginError";
 }
 
 /**
 * 注册新用户
 * @return 注册结果
 */
 @ResponseBody
 @RequestMapping(value = {"/uregister"})
 public String addUser(@RequestParam("username") String username,
    @RequestParam("password") String password,
    @RequestParam("password2") String password2,
    @RequestParam("age") int age){
 
 if(!password.equals(password2)){
 
  return "两次密码不相同，注册失败！！";
 }else {
  int res = userLoginService.adduser(username,password,age);
  if(res == 0){
  return "注册失败！";
  }else {
  return "注册成功！";
  }
 }
 
 }
}