MyBatisPlus分页查询的几种方式

Posted 2021-08-14 最小的帆也能远航

public R moreCompany(JSONObject params) {
    int pageNum = params.getIntValue("pageNum");
    int pageSize = params.getIntValue("pageSize");
    if (pageSize == 0) {
        pageSize = 20;
    }
    Long userId = params.getLongValue("userId");
    if (userId != 0) {
        //查询个人简历中的期望城市
        List<String> expectCityList = resumeDiyMapper.selectExpectCity(userId);
        //判断是否查询到“期望城市”
        if (expectCityList != null && expectCityList.size() > 0 && expectCityList.get(0) != null) {
            params.put("expectCityList", expectCityList);
        }

        //查询个人简历中的期望职位
        List<String> expectPositionList = resumeDiyMapper.selectExpectPosition(userId);
        //判断是否查询到“期望职位”
        if (expectPositionList != null && expectPositionList.size() > 0 && expectPositionList.get(0) != null) {
            params.put("expectPositionList", expectPositionList);
        }
    }

    //根据jy_resume_personal_info中的expectCity、expectPosition字段匹配jy_job中的name、workCity字段
    Page<Map<String, Object>> moreCompany = companyDiyMapper.selectMoreCompany(new Page<>()
            .setCurrent(pageNum)
            .setSize(pageSize),params);

    return R.ok(new PageInfo<>(moreCompany.getRecords()));
}

public R morePolicies(JSONObject params) {
    int pageNum = params.getIntValue("pageNum");
    int pageSize = params.getIntValue("pageSize");
    if (pageSize == 0) {
        pageSize = 20;
    }
    PageHelper.startPage(pageNum, pageSize);

    Page<Policy> policyPage = new Policy().selectPage(new Page<Policy>()
                    .setSize(pageSize)
                    .setCurrent(pageNum),
            new QueryWrapper<Policy>()
                    .eq("is_delete", 0)
                    .orderByDesc("view_count"));

    for (Policy policy : policyPage.getRecords()) {
        policy.setContent(currentUrl + "/appPolicy/policymodel/" + policy.getId());
    }
    return R.ok(policyPage);
}