Mybatis实现数据分页的多种方式详解

SELECT * FROM users LIMIT #{offset}, #{pageSize};

RowBounds rowBounds = new RowBounds(offset, pageSize);
List<User> users = sqlSession.selectList("UserMapper.selectAll", null, rowBounds);

<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>最新版本</version>
</dependency>

@Configuration
public class MyBatisConfig {
    @Bean
    public PageInterceptor pageInterceptor() {
        return new PageInterceptor();
    }
}

// 开启分页，后续查询会自动添加分页逻辑
PageHelper.startPage(pageNum, pageSize);
List<User> users = userMapper.selectAll();
// 获取分页信息
PageInfo<User> pageInfo = new PageInfo<>(users);

@Intercepts({@Signature(type = Executor.class, method = "query",
        args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class})})
public class CustomPageInterceptor implements Interceptor {
    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        // 动态修改 SQL，添加分页逻辑
        // ...
        return invocation.proceed();
    }
}

try (Cursor<User> cursor = userMapper.selectByCursor()) {
    for (User user : cursor) {
        // 处理数据
    }
}