1、修改配置檔案

新增資料來源

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=liaojiahong0426

2、配置別名

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

<!--    配置資料來源,交給Spring做-->

<!--    取別名-->
    <typeAliases>
        <package name="com.hong.pojo"/>
    </typeAliases>
</configuration>
 

3、匯入依賴，建立實體類Books

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.22</version>
</dependency>

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}
 

4、

5、

6、