SpringBoot+Mybatis增删该查（）
1、xml基础配置
<?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>3.3.4</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>SpringBootMybatis</artifactId><version>0.0.1-SNAPSHOT</version><name>SpringBootMybatis</name><description>SpringBootMybatis</description><url/><licenses><license/></licenses><developers><developer/></developers><scm><connection/><developerConnection/><tag/><url/></scm><properties><java.version>17</java.version></properties><dependencies><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>3.0.3</version></dependency><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter-test</artifactId><version>3.0.3</version><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>
2、配置文件properties
spring.application.name=SpringBootMybatis
server.port=8088spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver#mybatis.config-location=classpath:mybatis/mybatis-config.xml
#mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
mybatis.mapper-locations=classpath:mapper/*.xml
3、项目目录
4、代码
User
package com.example.springbootmybatis.domain;public class User {private Long id; // 主键IDprivate String name; // 姓名private String password; // 密码private Integer age; // 年龄private String email; // 邮箱private String updateTime; // 修改时间public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}public String getUpdateTime() {return updateTime;}public void setUpdateTime(String updateTime) {this.updateTime = updateTime;}@Overridepublic String toString() {return "User{" +"id=" + id +", name='" + name + '\'' +", password='" + password + '\'' +", age=" + age +", email='" + email + '\'' +", updateTime='" + updateTime + '\'' +'}';}
}
UserMapper
package com.example.springbootmybatis.mapper;import com.example.springbootmybatis.domain.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;import java.util.List;//@Mapper
public interface UserMapper {
// @Select("select * from user")List<User> getList();int deleteById(Long id);int insert(User user);User getById(Long id);int update(User user);
}
resources/mapper/UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.springbootmybatis.mapper.UserMapper"><select id="getList" resultType="com.example.springbootmybatis.domain.User">select * from user</select><delete id="deleteById" parameterType="java.lang.Long">delete from user where id = #{id}</delete><insert id="insert" parameterType="com.example.springbootmybatis.domain.User">insert into user(id,name,password,age,email) values(#{id},#{name},#{password},#{age},#{email})</insert><update id="update" parameterType="com.example.springbootmybatis.domain.User">update user set name = #{name},password = #{password},age = #{age},email = #{email} where id = #{id}</update><select id="getById" resultType="com.example.springbootmybatis.domain.User">select * from user where id = #{id}</select>
</mapper>
UserController
package com.example.springbootmybatis.controller;import com.example.springbootmybatis.domain.User;
import com.example.springbootmybatis.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;import java.util.List;@RestController
public class UserController {@Autowiredprivate UserMapper userMapper;@GetMapping("test")public String test(){return "hello world";}@GetMapping("getList")public List<User> getList(){return userMapper.getList();}@GetMapping("getById/{id}")public User getById(@PathVariable Long id){System.out.println(id);return userMapper.getById(id);}@PostMapping("insert")public int insert(@RequestBody User user){System.out.println("--------------"+user.toString());return userMapper.insert(user);}@PostMapping("update")public int update(@RequestBody User user){System.out.println("--------------"+user.toString());return userMapper.update(user);}@DeleteMapping("deleteById/{id}")public int deleteById(@PathVariable Long id){System.out.println(id);return userMapper.deleteById(id);}
}
SpringBootMybatisApplication
package com.example.springbootmybatis;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
@MapperScan("com.example.springbootmybatis.mapper")
public class SpringBootMybatisApplication {public static void main(String[] args) {SpringApplication.run(SpringBootMybatisApplication.class, args);}}
5、请求
{"id": 55,"name": "John Doe","password": "password123","age": 30,"email": "john.doe@example.com","updateTime": "2023-10-10 12:00:00"
}
GET http://localhost:8088/getList
DELETE http://localhost:8088/deleteById/1
### 根据ID查询用户信息
GET http://localhost:8088/getById/3
