MybatisPlus调用原生SQL的三种方法实例详解

public interface BaseMapper<T> extends com.baomidou.mybatisplus.core.mapper.BaseMapper<T> {
 
    @Select("${nativeSql}")
    Object nativeSql(@Param("nativeSql") String nativeSql);
}

mybatis-plus:
  global-config:
    enable-sql-runner: true

List<Map<String, Object>> mapList = SqlRunner.db().selectList("select * from test_example limit 1,10");

        String sql = "select * from test_example limit 1,10";
 
        Class<ExampleEntity> entityClass = ExampleEntity.class;
        // INFO: DCTANT: 2022/9/29 使用MybatisPlus自己的SqlHelper获取SqlSessionFactory
        SqlSessionFactory sqlSessionFactory = SqlHelper.sqlSessionFactory(ExampleEntity.class);
        // INFO: DCTANT: 2022/9/29 通过SqlSessionFactory创建一个新的SqlSession，并获取全局配置
        SqlSession sqlSession = sqlSessionFactory.openSession();
        Configuration configuration = sqlSessionFactory.getConfiguration();
 
        // INFO: DCTANT: 2022/9/29 生成一个uuid，用于将这个SQL创建的MappedStatement注册到MybatisPlus中
        String sqlUuid = UUID.fastUUID().toString(true);
        RawSqlSource rawSqlSource = new RawSqlSource(configuration, sql, Object.class);
        MappedStatement.Builder builder = new MappedStatement.Builder(configuration, sqlUuid, rawSqlSource, SqlCommandType.SELECT);
        ArrayList<ResultMap> resultMaps = new ArrayList<>();
        // INFO: DCTANT: 2022/9/29 创建返回映射 
        ResultMap.Builder resultMapBuilder = new ResultMap.Builder(configuration, UUID.fastUUID().toString(true), entityClass, new ArrayList<>());
        ResultMap resultMap = resultMapBuilder.build();
        resultMaps.add(resultMap);
        builder.resultMaps(resultMaps);
 
        MappedStatement mappedStatement = builder.build();
        // INFO: DCTANT: 2022/9/29 将创建的MappedStatement注册到配置中
        configuration.addMappedStatement(mappedStatement);
        // INFO: DCTANT: 2022/9/29 使用SqlSession查询原生SQL 
        List<ExampleEntity> list = sqlSession.selectList(sqlUuid);
        // INFO: DCTANT: 2022/9/29 关闭session 
        sqlSession.close();

@Repository
public interface ZbArticleCEIResultPerformanceMapper extends BaseMapper<ZbArticleCEIResultPerformance> {
    @Select({"${sql}"})
    @ResultType(ArrayList.class)
    List<ZbArticleCEIResultPerformance> executeQuery(@Param("sql") String sql);
}