1、Application.java

@Configuration
public class DataSourceConfig {

    @Bean
    public DatabaseIdProvider getDatabaseIdProvider() {
        DatabaseIdProvider databaseIdProvider = new VendorDatabaseIdProvider();
        Properties p = new Properties();
        p.setProperty("MySQL", "mysql");
        p.setProperty("Kingbase", "kingbase8");
        databaseIdProvider.setProperties(p);
        return databaseIdProvider;
    }
}

2、通过yml文件引入datasource（人大金仓）

spring:
  datasource:
    url: jdbc:kingbase8://10.0.10.73:54321/xxx...
    username: xxx
    password: xxx
    driver-class-name: com.kingbase8.Driver

3、添加databaseId=“kingbase8”/"oracle"即可完成

        在mapper中进行sql厂商标识的注入

<!--第一种:复制两个片段直接加上databaseId="kingbase8"/"oracle"-->
<select id="selectAllCoco" resultType="com.note.note.pojo.Coco" databaseId="kingbase8">
  select id,name from cocodb;
</select>
<select id="selectAllCoco" resultType="com.note.note.pojo.Coco" databaseId="oracle">
  select id,name from cocodb;
</select>
<!--第二种:引入if test = "kingbase8"/"oracle" databaseId="kingbase8"/"oracle" 进行改写-->
<insert id="insert">
  <selectKey keyProperty="id" resultType="int" order="BEFORE">
    <if test="_databaseId == 'oracle'">
      select seq_users.nextval from dual 
    </if>
    <if test="_databaseId == 'db2'">
      select nextval for seq_users from sysibm.sysdummy1" 
    </if>
  </selectKey>
  insert into users values (#{id}, #{name})
</insert>