MyBatisPlus分页查询的几种方式

Posted 2021-12-28 可小辉

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);

  @Override
    public R morePolicies(JSONObject params) 
        int pageNum = params.getIntValue("pageNum");
        int pageSize = params.getIntValue("pageSize");
        if (pageSize == 0) 
            pageSize = 20;
        

        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);