Java之SpringBoot+tk.Mybatis（5分钟搭建WEB工程-手把手）
Posted 蓝盒子itbluebox
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一、搭建项目
二、引入依赖
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>cn.itbluebox</groupId>
<artifactId>springboot_test</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.2.0</version>
</dependency>
<!--分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.4.1</version>
</dependency>
<!-- 通用Mapper启动器 -->
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.0.3</version>
</dependency>
<!-- mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.12</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>2.0.3</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-core</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-extra</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-base</artifactId>
<version>1.0.4</version>
</dependency>
<!-- web启动器 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.github.tobato</groupId>
<artifactId>fastdfs-client</artifactId>
<version>1.26.1-RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.9</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.11.3</version>
</dependency>
</dependencies>
<build>
<resources>
<!--注册Dao包目录下Mybatis映射文件资源目录-->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<!--注册webapp目录为资源目录-->
<resource>
<directory>src/main/webapp</directory>
<targetPath>META-INF/resources</targetPath>
<includes>
<include>**/*.*</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
三、创建配置文件
server:
port: 8080
#datasource
spring:
datasource:
url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=UTF-8&useUnicode=true&useSSL=false&tinyInt1isBit=false&allowPublicKeyRetrieval=true&serverTimezone=Asia/Shanghai
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
四、创建数据库
CREATE TABLE `sys_user` (
`id` bigint NOT NULL AUTO_INCREMENT,
`name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
`age` int NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
五、创建实体类
package cn.itbluebox.domain;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.persistence.Table;
@Data
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "sys_user")
public class SysUser
private Long id;
private String name;
private Integer age;
六、创建mapper和对应的映射文件
package cn.itbluebox.mapper;
import cn.itbluebox.domain.SysUser;
import tk.mybatis.mapper.common.Mapper;
public interface SysUserMapper extends Mapper<SysUser>
<?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="cn.itbluebox.mapper.SysUserMapper">
<resultMap type="SysUser" id="SysUserResult">
<result property="id" column="id" />
<result property="name" column="name" />
<result property="age" column="age" />
</resultMap>
</mapper>
七、创建Service和实现类
package cn.itbluebox.service;
public interface SysUserService
package cn.itbluebox.service.impl;
import cn.itbluebox.mapper.SysUserMapper;
import cn.itbluebox.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class SysUserServiceImpl implements SysUserService
@Autowired
private SysUserMapper sysUserMapper;
八、controller
package cn.itbluebox.controller;
import cn.itbluebox.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class SysUserController
@Autowired
private SysUserService sysUserService;
@GetMapping("/userSelect")
public String userSelect()
return sysUserService.userSelect();
实现对应的Service
package cn.itbluebox.service;
import cn.itbluebox.domain.SysUser;
import java.util.List;
public interface SysUserService
List<SysUser> userSelect();
对应的实现类
package cn.itbluebox.service.impl;
import cn.itbluebox.domain.SysUser;
import cn.itbluebox.mapper.SysUserMapper;
import cn.itbluebox.service.SysUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class SysUserServiceImpl implements SysUserService
@Autowired
private SysUserMapper sysUserMapper;
@Override
public List<SysUser> userSelect()
return sysUserMapper.selectAll();
九、创建启动类
package cn.itbluebox;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import tk.mybatis.spring.annotation.MapperScan;
@SpringBootApplication
@MapperScan("cn.itbluebox.mapper")
public class SpringBootTestApplication
public static void main(String[] args)
SpringApplication.run(SpringBootTestApplication.class);
十、运行测试
运行成功
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