IDEA下創建SpringBoot+MyBatis+MySql項目實現動態登錄與註冊功能
一、搭建SpringBoot項目
1.1、file ——> new ——> project——> Spring Initializr——> next——> next——> next——> finish
註意選擇包依賴關系
二、springboot整合mybatis.mysql
2.1、整體結構
2.2、設置所需要的依賴
即pom.xml文件
<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.4.2</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>springboot-web04</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jdbc</artifactId> </dependency> <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>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> <!--下面的都是我加的--> <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>2.1.3</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.12</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.2.1</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.xmlunit</groupId> <artifactId>xmlunit-core</artifactId> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.6</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
2.3、設置application.yml文件與pplication.properties文件
在resources目錄下新建yml文件，用於存放數據庫連接需要的一些數據
spring: datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=GMT%2B8&useSSL=true username: root //數據庫 password: sm1208 //密碼
在application.properties文件中加入
#端口號 server.port=8080 #druid數據庫連接池 type=com.alibaba.druid.pool.DruidDataSource #清除緩存 spring.thymeleaf.cache=false #配置mapper mybatis.mapper-locations=classpath:mapper/*.xml
2.4、在pojo下的新建類UserLogin
package springbootweb04.demo.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserLogin {
private String username;
private String password;
public String getUsername() {
return username;
}
}
2.5、新建數據庫，名為mybatis，創建用戶表，名為userLogin，創建username、password字段
2.5.1、數據庫名可以隨意，不過要與application.yml文件中的一致
2.5.2、IDEA中連接數據庫
Database——> +——> Data Source——> Mysql
2.6、mapper層
新建UserLoginMapper接口
package springbootweb04.demo.mapper;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;
import springbootweb04.demo.pojo.UserLogin;
import java.util.List;
@Mapper
@Repository
public interface UserLoginMapper {
//查詢
public List<UserLogin> queryAll();
//添加數據
public int add(UserLogin userLogin);
//根據用戶名查詢數據
public UserLogin queryByName(String username);
}
2.7、resources目錄下的mapper目錄
在resources目錄下新建mapper目錄，並在這個目錄下新建UserLoginMapper.xml文件
<?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="springbootweb04.demo.mapper.UserLoginMapper">
<select id="queryAll" resultType="springbootweb04.demo.pojo.UserLogin">
select * from userLogin
</select>
<insert id="add" parameterType="springbootweb04.demo.pojo.UserLogin">
insert into userLogin values (#{username},#{password})
</insert>
<select id="queryByName" resultType="springbootweb04.demo.pojo.UserLogin">
select * from userLogin where username = #{username}
</select>
</mapper>
2.8、測試
在test.Java.springbootweb04.demo類中，測試是否能聯通數據庫，沒有報錯說明成功。
package springbootweb04.demo;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import springbootweb04.demo.mapper.UserLoginMapper;
import springbootweb04.demo.pojo.UserLogin;
import org.springframework.beans.factory.annotation.Autowired;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;
@SpringBootTest
class DemoApplicationTests {
@Autowired
DataSource dataSource;
@Test
void contextLoads() throws SQLException {
System.out.println(dataSource.getClass());
Connection connection = dataSource.getConnection();
System.out.println(connection);
//template模板，拿來即用
connection.close();
}
@Autowired
UserLoginMapper userLoginMapper;
@Test
public void toTest(){
List<UserLogin> userLogins = userLoginMapper.queryAll();
userLogins.forEach(e-> System.out.println(e));
}
}
2.9、services層
在services下新建接口UserLoginServicesI和類UserLoginServicesImpl
UserLoginServicesI接口：
package springbootweb04.demo.services;
import springbootweb04.demo.pojo.UserLogin;
import java.util.List;
public interface UserLoginServicesI {
//查詢
public List<UserLogin> queryAll();
//添加數據
public int add(UserLogin userLogin);
//根據用戶名查詢數據
public UserLogin queryByName(String username);
}
UserLoginServicesImpl類
package springbootweb04.demo.services;
import springbootweb04.demo.mapper.UserLoginMapper;
import springbootweb04.demo.pojo.UserLogin;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserLoginServicesImpl implements UserLoginServicesI {
@Autowired
UserLoginMapper userLoginMapper;
@Override
public List<UserLogin> queryAll() {
return userLoginMapper.queryAll();
}
@Override
public int add(UserLogin userLogin) {
return userLoginMapper.add(userLogin);
}
@Override
public UserLogin queryByName(String username) {
return userLoginMapper.queryByName(username);
}
}
2.A、conteoller層
編寫MyController類
package springbootweb04.demo.controller;
import springbootweb04.demo.pojo.UserLogin;
import springbootweb04.demo.services.UserLoginServicesImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class MyController {
@Autowired
UserLoginServicesImpl userLoginServicesImpl;
@RequestMapping("/toLogin")
public String toLogin(){
return "login";
}
@RequestMapping("/LoginSuccess")
public String LoginSuccess(Model model, UserLogin userLogin){
//先查詢看該用戶名是否存在
UserLogin userLogin1 = userLoginServicesImpl.queryByName(userLogin.getUsername());
if(userLogin1 != null){ // 如果查詢的用戶不為空
System.out.println(userLogin1.toString());
return "success";
}
else{
//返回到登錄頁面
model.addAttribute("data","該用戶不存在，請先註冊");
return "login";
}
}
//登錄界面
@RequestMapping("/toRegister")
public String toRegister(){
return "register";
}
@RequestMapping("/RegisterSuccess")
public String toRegisterSuccess(Model model,UserLogin userLogin){
//將賬號密碼加入到數據庫中
int add = userLoginServicesImpl.add(userLogin);
System.out.println("數據插入成功！");
model.addAttribute("data","註冊成功，請登錄！");
return "login";
}
}
三、編寫前端頁面
將以下三個頁面放在templates下面
login.html：登錄頁面
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body style="background: aqua">
<div align="center">
<br><br><h2>登錄界面</h2><br><br>
<span th:text="${data}" style="text-color:red;font-size: 10px"></span>
<form method="get" action="/LoginSuccess">
用戶名:<input type="text" name="username" placeholder="請輸入用戶名" required/><br><br>
密碼：<input type="text" name="password" placeholder="請輸入密碼" required/><br><br>
<input type="submit" value="登錄">
</form>
<br>
<form method="get" action="/toRegister">
<input type="submit" value="註冊">
</form>
</div>
</body>
</html>
register.html:註冊頁面
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body style="background: aqua"> <div align="center"> <br><br>註冊界面<br><br> <form method="get" action="/RegisterSuccess"> 用戶名:<input type="text" name="username" placeholder="請輸入用戶名" required/><br><br> 密碼：<input type="text" name="password" placeholder="請輸入密碼" required/><br><br> 確認密碼：<input type="text" name="password2" placeholder="請輸入密碼" required/><br><br> <input type="submit" value="註冊"> </form> </div> </body> </html>
success.html：成功界面
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> </body> </html>
四、運行測試
:localhost:8080/toLogin
到此這篇關於IDEA下創建SpringBoot+MyBatis+MySql項目實現動態登錄與註冊功能的文章就介紹到這瞭,更多相關SpringBoot+MyBatis+MySql動態登錄與註冊內容請搜索WalkonNet以前的文章或繼續瀏覽下面的相關文章希望大傢以後多多支持WalkonNet！
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