SpringBoot + PageHelper, 分页不生效解决方案

业务代码如下:

public PageBean<CompanyDTO> getCompanyList( int pageIndex, int pageSize, CompanyDTO companyDTO) {
        PageHelper.startPage(pageIndex, pageSize);
        int counts = this.countCompanyByCond(companyDTO);
        List<CompanyDTO> companyDTOS = companyDTOMapper.getCompanyListByCond(companyDTO);
        PageBean companyPage = new PageBean<>(pageIndex, pageSize, counts);
        companyPage.setItems(companyDTOS);
        return companyPage;
    }

用的是pagehelper-spring-boot-starter

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>

// 配置文件
pagehelper:
  helperDialect: mysql
  reasonable: true
  supportMethodsArguments: true
  params: count=countSql

但是分页就是不生效,每次都会查出全量数据