基于mongoTemplate进行复杂分页查询

第一步,看一下页面原型:

第二步 前端控制器

/**
 *
 * 条件分页查询
 * @param deviceExtend  条件对象
 * @param currentPage   当前页
 * @param pageSize      每页显示数
 * @param from          起始时间
 * @param to            结束时间
 * @return
 */
@GetMapping
@ResponseBody
public Page deviceExtendPage(DeviceExtend deviceExtend,Integer currentPage,Integer pageSize,String from,String to ){
    if(currentPage>0&&pageSize>0){
        return deviceExtendService.getDeviceExtendPage(deviceExtend,currentPage,pageSize,from,to);
    }
    return null;
}

第三步,需要的实体类:

@Document(collection = "DeviceExtend")
public class DeviceExtend {

    /**
     * 设备ID
     */
    @Id
    private String id;

    /**
     * 设备名称
     */
    @Field("name")
    @JsonProperty("name")
    private String name;

    /**
     * 设备SN码
     */
    @Field("SN")
    @JsonProperty("SN")
    private String SN;

    /**
     * 设备的MAC地址
     */
    @Field("MAC")
    @JsonProperty("MAC")
    private String MAC;

    /**
     * 设备类型
     */
    @Field("deviceType")
    @JsonProperty("deviceType")
    private String deviceType;

    /**
     * 制造商
     */
    @Field("manufacturer")
    @JsonProperty("manufacturer")
    private String manufacturer;


    /**
     * 入库时间
     */

    @Field("storageTime")
    @JsonProperty("storageTime")
    private Date storageTime;

    /**
     * 设备状态 1为入库, 2为出库, 3入网
     */
    @Field("deviceState")
    @JsonProperty("deviceState")
    private Integer deviceState;

    /**
     * 设备参数
     */
    @Field("deviceParameter")
    @JsonProperty("deviceParameter")
    private String deviceParameter;

    /**
     * 设备维保信息
     */
    @Field("maintain")
    @JsonProperty("maintain")
    private String maintain;

    public String getDeviceParameter() {
        return deviceParameter;
    }

    public void setDeviceParameter(String deviceParameter) {
        this.deviceParameter = deviceParameter;
    }

    public String getMaintain() {
        return maintain;
    }

    public void setMaintain(String maintain) {
        this.maintain = maintain;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSN() {
        return SN;
    }

    public void setSN(String SN) {
        this.SN = SN;
    }

    public String getMAC() {
        return MAC;
    }

    public void setMAC(String MAC) {
        this.MAC = MAC;
    }

    public String getDeviceType() {
        return deviceType;
    }

    public void setDeviceType(String deviceType) {
        this.deviceType = deviceType;
    }

    public String getManufacturer() {
        return manufacturer;
    }

    public void setManufacturer(String manufacturer) {
        this.manufacturer = manufacturer;
    }


    public Integer getDeviceState() {
        return deviceState;
    }

    public void setDeviceState(Integer deviceState) {
        this.deviceState = deviceState;
    }

    public Date getStorageTime() {
        return storageTime;
    }

    public void setStorageTime(Date storageTime) {
        this.storageTime = storageTime;
    }

    @Override
    public String toString() {
        return "DeviceExtend{" +
                "id='" + id + '\'' +
                ", name='" + name + '\'' +
                ", SN='" + SN + '\'' +
                ", MAC='" + MAC + '\'' +
                ", deviceType='" + deviceType + '\'' +
                ", manufacturer='" + manufacturer + '\'' +
                ", storageTime=" + storageTime +
                ", deviceState=" + deviceState +
                ", deviceParameter='" + deviceParameter + '\'' +
                ", maintain='" + maintain + '\'' +
                '}';
    }
}

第四,分页实体类:

public class Page<T> {

    //总页数
    private Long totalPage;

    //总记录数
    private Long totalCount;

    //每页显示集合
    private List<T> rows;

    public Long getTotalPage() {
        return totalPage;
    }

    public void setTotalPage(Long totalPage) {
        this.totalPage = totalPage;
    }

    public Long getTotalCount() {
        return totalCount;
    }

    public void setTotalCount(Long totalCount) {
        this.totalCount = totalCount;
    }

    public List<T> getRows() {
        return rows;
    }

    public void setRows(List<T> rows) {
        this.rows = rows;
    }
}

第五步,业务接口

/**
 * 自定义设备分页条件查询
 * @param deviceExtend
 * @param currentPage
 * @param pageSize
 * @return
 */
public Page getDeviceExtendPage(DeviceExtend deviceExtend,Integer currentPage,Integer pageSize,String from,String to);

第六步,业务实现类:

@Service
public class DeviceExtendServiceImpl implements DeviceExtendService {

    //获得持久化操作对象
    @Autowired
    private MongoTemplate mongoTemplate;

    /**
     * 自定义设备保存
     * @param deviceExtend
     */
    @Override
    public void save(DeviceExtend deviceExtend) {
        mongoTemplate.save(deviceExtend);
    }

    /**
     * 自定义设备分页条件查询
     *
     * @param deviceExtend
     * @param currentPage
     * @param pageSize
     * @return
     */
    @Override
    public Page getDeviceExtendPage(DeviceExtend deviceExtend, Integer currentPage, Integer pageSize,String from,String to) {
        //创建查询对象
        Query query=new Query();
        //设置起始数
        query.skip((currentPage-1)*pageSize);
        //设置查询条数
        query.limit(pageSize);
            //创建条件对象
            Criteria criteria=new Criteria();
            if(StringUtils.isNotBlank(deviceExtend.getSN())){
                //添加设备SN和MAC地址条件
                criteria.orOperator(Criteria.where("SN").regex(deviceExtend.getSN()),Criteria.where("MAC").regex(deviceExtend.getSN()));
            }
            if(StringUtils.isNotBlank(deviceExtend.getName())){
                //设备名的正则
                Pattern pattern = Pattern.compile("^.*" + deviceExtend.getName() + ".*$", Pattern.CASE_INSENSITIVE);
                //添加设备名模糊查询条件
                criteria.and("name").regex(pattern);
            }
            if(StringUtils.isNotBlank(from)&&StringUtils.isNotBlank(to)){
                //添加时间段设备条件
                SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
                try {
                    criteria.and("storageTime").gte(format.parse(from)).lt(format.parse(to));
                } catch (ParseException e) {
                    e.printStackTrace();
                }

            }
            if(StringUtils.isNotBlank(deviceExtend.getDeviceType())){
                //设置设备类型条件
                criteria.and("deviceType").is(deviceExtend.getDeviceType());
                System.out.println("==="+deviceExtend.getDeviceType());
            }
            if(StringUtils.isNotBlank(deviceExtend.getManufacturer())){
                //设置厂商条件
                criteria.and("manufacturer").is(deviceExtend.getManufacturer());
            }
            if (deviceExtend.getDeviceState()!=null){
                //设置设备状态
                criteria.and("deviceState").is(deviceExtend.getDeviceState());
            }
            query.addCriteria(criteria);

        //查询当前页数据集合
        List deviceExtends = mongoTemplate.find(query, DeviceExtend.class);
        //查询总记录数
        long count = mongoTemplate.count(query, DeviceExtend.class);
        //创建分页实体对象
        Page page=new Page<>();
        page.setRows(deviceExtends);
        page.setTotalCount(count);
        page.setTotalPage(count%pageSize==0?1:count/pageSize+1);
        return page;
    }


    /**
     * 自定义设备批量保存
     * @param list
     */
    @Override
    public void svaeBatch(List list) {
        if(list.size()>0){
            for (DeviceExtend deviceExtend : list) {
                mongoTemplate.save(deviceExtend);
            }
        }
    }

    /**
     * 根据ID查询设备信息
     *
     * @param id
     */
    @Override
    public DeviceExtend findById(String id) {
        return mongoTemplate.findById(id,DeviceExtend.class);
    }

    /**
     * 根据设备ID修改设备状态
     *
     * @param id
     * @param state
     */
    @Override
    public void updateState(String id, Integer state) {
        Query query=new Query();
        query.addCriteria(Criteria.where("id").is(id));
        Update update= Update.update("deviceState",state);
        mongoTemplate.updateFirst(query,update,DeviceExtend.class);
    }


}