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因为使用SpringBoot 3.2.1 出了一些问题,下面改成2.5.14
<?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>2.5.14</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>org.dam</groupId> <artifactId>increment-backup-serve</artifactId> <version>0.0.1-SNAPSHOT</version> <name>increment-backup-serve</name> <description>increment-backup-serve</description> <properties> <java.version>17</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <!-- web启动插件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--lombok插件--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <!-- sqlite3驱动包 --> <dependency> <groupId>org.xerial</groupId> <artifactId>sqlite-jdbc</artifactId> <version>3.21.0.1</version> </dependency> <!--mybatis-plus插件--> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.3.1</version> </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>
使用Macbook pro运行项目,会报如下错误
Caused by: java.lang.Exception: No native library is found for os.name=Mac and os.arch=aarch64. path=/org/sqlite/native/Mac/aarch64
解决方案,修改版本
<!-- sqlite3驱动包 -->
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.32.3.3</version>
</dependency>
我的开发机是mac系统,自动了sqlite3,如果你们没有的话,要去安装,可以参考官方文档的快速开始:https://www.sqlite.org/quickstart.html
mac@MacdeMac-Pro ~ % sqlite3
SQLite version 3.39.4 2022-09-07 20:51:41
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
从一个目录进入终端,创建数据库
mac@MacdeMac-Pro sql % sqlite3 increment-backup.db;
SQLite version 3.39.4 2022-09-07 20:51:41
Enter ".help" for usage hints.
查看数据库是否创建成功
sqlite> .databases
main: /Volumes/MacSpan/Projects/increment-backup/sql/DatabaseName.db r/w
创建成功,出现如下文件
创建数据表
sqlite> create table user
...> (
...> id INTEGER not null primary key autoincrement,
...> name varchar(20)
...> );
查看数据表
sqlite> .tables
user
连接成功
连接成功
如果没有安装如下插件的话,先安装一下
生成成功
创建如下项目结构,并粘贴所生成的代码过去
注意,mapper.xml的实体类引用要和你项目的一致
因为只是非常简单的案例,这里先不使用service包下的代码
package org.dam.entity; import com.baomidou.mybatisplus.annotation.IdType; import com.baomidou.mybatisplus.annotation.TableField; import com.baomidou.mybatisplus.annotation.TableId; import com.baomidou.mybatisplus.annotation.TableName; import lombok.Data; import java.io.Serializable; /** * * @TableName user */ @TableName(value ="user") @Data public class User implements Serializable { /** * */ @TableId(type = IdType.AUTO) private Integer id; /** * */ private String name; @TableField(exist = false) private static final long serialVersionUID = 1L; @Override public boolean equals(Object that) { if (this == that) { return true; } if (that == null) { return false; } if (getClass() != that.getClass()) { return false; } User other = (User) that; return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId())) && (this.getName() == null ? other.getName() == null : this.getName().equals(other.getName())); } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((getId() == null) ? 0 : getId().hashCode()); result = prime * result + ((getName() == null) ? 0 : getName().hashCode()); return result; } @Override public String toString() { StringBuilder sb = new StringBuilder(); sb.append(getClass().getSimpleName()); sb.append(" ["); sb.append("Hash = ").append(hashCode()); sb.append(", id=").append(id); sb.append(", name=").append(name); sb.append(", serialVersionUID=").append(serialVersionUID); sb.append("]"); return sb.toString(); } }
package org.dam.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.dam.entity.User;
/**
* @author mac
* @description 针对表【user】的数据库操作Mapper
* @createDate 2024-01-18 21:12:12
* @Entity generator.entity.User
*/
public interface UserMapper extends BaseMapper<User> {
}
<?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="org.dam.mapper.UserMapper">
<resultMap id="BaseResultMap" type="org.dam.entity.User">
<id property="id" column="id" jdbcType="INTEGER"/>
<result property="name" column="name" jdbcType="VARCHAR"/>
</resultMap>
<sql id="Base_Column_List">
id,name
</sql>
</mapper>
package org.dam.controller; import org.dam.entity.User; import org.dam.mapper.UserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; /** * @Author dam * @create 2024/1/18 20:37 */ @RestController @RequestMapping("/user") public class UserController { @Autowired UserMapper userMapper; /** * 增添数据 */ @GetMapping("/insert") public Object insert(String name) { User user = new User(); user.setName(name); return userMapper.insert(user); } /** * 查询数据 */ @GetMapping("/show") public Object show() { return userMapper.selectList(null); } /** * 删除数据 */ @DeleteMapping("/delete") public Object delete(Integer id) { return userMapper.deleteById(id); } /** * 修改数据 */ @GetMapping("/update") public Object update(Integer id, String name) { User user = new User(); user.setId(id); user.setName(name); return userMapper.updateById(user); } }
注意url要对应sqlite数据库
# Tomcat server: port: 8899 #spring spring: datasource: #引用项目中的数据库文件 driver-class-name: org.sqlite.JDBC url: jdbc:sqlite::resource:static/sqlite/increment-backup.db username: password: # 指定静态资源的路径 web: resources: static-locations: classpath:/static/ #mybatis: # mapper-locations: classpath*:mapper/**/*.xml
IncrementBackupServeApplication
package org.dam;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("org.dam.mapper")
public class IncrementBackupServeApplication {
public static void main(String[] args) {
SpringApplication.run(IncrementBackupServeApplication.class, args);
}
}
我这边使用接口测试工具Apifox来进行测试,使用Postman等其他工具也是可以的,不过我强烈推荐Apifox,感觉非常好用
再查一次,修改成功
再查一遍,删除成功
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