创建项目

修改pom.xml

<?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>org.example</groupId><artifactId>SpirngCloud</artifactId><version>1.0-SNAPSHOT</version>
<!--打包方式--><packaging>pom</packaging><properties><maven.compiler.source>17</maven.compiler.source><maven.compiler.target>17</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><junit.version>4.13</junit.version><lombok.version>1.18.24</lombok.version></properties><dependencyManagement><dependencies>
<!--            springcloud依赖--><!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-dependencies --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>2023.0.1</version><type>pom</type><scope>import</scope></dependency>
<!--            SpringBoot--><!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>3.3.0</version><type>pom</type><scope>import</scope></dependency>
<!--            数据库--><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.32</version></dependency><!-- https://mvnrepository.com/artifact/com.alibaba/druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.21</version></dependency>
<!--Spring Boot启动器--><!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter --><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.3.2</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok.version}</version></dependency><!-- https://mvnrepository.com/artifact/log4j/log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies></dependencyManagement></project>

新建modul

建立数据库

创建表

插入数据

建立实体类

新建模型

修改pom.xml

<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/maven-v4_0_0.xsd"><parent><artifactId>SpirngCloud</artifactId><groupId>org.example</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>provider-dept</artifactId><dependencies>
<!--        拿到api module--><dependency><groupId>org.example</groupId><artifactId>api</artifactId><version>1.0-SNAPSHOT</version></dependency>
<!--        junit--><dependency><groupId>junit</groupId><artifactId>junit</artifactId></dependency><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-core</artifactId></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></dependency><!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>3.3.0</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>3.3.0</version></dependency>
<!--        jetty--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jetty</artifactId><version>3.3.0</version></dependency>
<!--        热部署工具--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><version>3.3.0</version></dependency></dependencies>
</project>

配置application.yml

server:port: 8001
#mybatis配置
mybatis:type-aliases-package: com.example.pojomapper-locations: classpath:mybatis/mapper/*.xmlconfig-location: classpath:mybatis/mybatis-config.xml#spring配置spring:application:name: provider-deptdatasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/db01?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=false&allowPublicKeyRetrieval=trueusername: rootpassword: 2224195486

dao层

mapper.xml

service层


controller层

package com.example.controller;import com.example.pojo.Dept;
import com.example.service.DeptService;
import jakarta.annotation.Resource;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController
public class DeptController {@Resourceprivate DeptService deptService;@PostMapping("/dept/add")public boolean addDept(Dept dept){return deptService.addDept(dept);}@GetMapping("/dept/get/{id}")public Dept get(@PathVariable("id") Integer id){return deptService.queryById(id);}@PostMapping("/dept/list")public List<Dept> queryAll(){return deptService.queryAll();}}

建立启动类


这里可以先快速搭建springboot环境，再修改配置