@Override public Page<SysUserPolicyEntity> selectInsured(GrpnameForm data, int current, int pageSize) { //查询 String employeeNo = data.getEmployeeNo(); String grpname = data.getGrpname(); List<SysUserPolicyEntity> lcgrpcontVoPage = lcgrpcontMapper.selectInsured(grpname); LambdaQueryWrapper<SysUserPolicyEntity> wrapper = new LambdaQueryWrapper<>(); wrapper.eq(ObjectUtils.isNotEmpty(employeeNo), SysUserPolicyEntity::getEmployeeNo, employeeNo); List<SysUserPolicyEntity> sysUserPolicyEntityList = sysUserPolicyMapper.selectList(wrapper); for (SysUserPolicyEntity record : lcgrpcontVoPage) { for (SysUserPolicyEntity policyEntity : sysUserPolicyEntityList) { if (record.getGrpcontno().equals(policyEntity.getGrpcontno())) { record.setSelectFlag(policyEntity.getSelectFlag()); } } } sysUserPolicyMapper.delete(wrapper); Page<SysUserPolicyEntity> objectPage = new Page<>(); objectPage.setRecords(lcgrpcontVoPage); objectPage.setCurrent(current); objectPage.setSize(pageSize); objectPage.setTotal(lcgrpcontVoPage.size()); return objectPage; }按照分页放入数据

可以使用PageHelper插件来实现分页，具体代码如下：

@Override
public Page<SysUserPolicyEntity> selectInsured(GrpnameForm data, int current, int pageSize) {
    //查询
    String employeeNo = data.getEmployeeNo();
    String grpname = data.getGrpname();
    List<SysUserPolicyEntity> lcgrpcontVoPage = lcgrpcontMapper.selectInsured(grpname);
    LambdaQueryWrapper<SysUserPolicyEntity> wrapper = new LambdaQueryWrapper<>();
    wrapper.eq(ObjectUtils.isNotEmpty(employeeNo), SysUserPolicyEntity::getEmployeeNo, employeeNo);
    List<SysUserPolicyEntity> sysUserPolicyEntityList = sysUserPolicyMapper.selectList(wrapper);

    for (SysUserPolicyEntity record : lcgrpcontVoPage) {
        for (SysUserPolicyEntity policyEntity : sysUserPolicyEntityList) {
            if (record.getGrpcontno().equals(policyEntity.getGrpcontno())) {
                record.setSelectFlag(policyEntity.getSelectFlag());
            }
        }
    }
    sysUserPolicyMapper.delete(wrapper);

    //使用PageHelper插件进行分页
    PageHelper.startPage(current, pageSize);
    List<SysUserPolicyEntity> list = new ArrayList<>(lcgrpcontVoPage);
    PageInfo<SysUserPolicyEntity> pageInfo = new PageInfo<>(list);

    return pageInfo;
}

其中，PageHelper.startPage(current, pageSize)表示开始分页，current表示当前页码，pageSize表示每页显示的数量。PageInfo<SysUserPolicyEntity> pageInfo = new PageInfo<>(list)表示将分页后的数据封装到PageInfo对象中。最后返回pageInfo即可。