package Device import ( "ColdP_server/conf" "ColdP_server/controllers/lib" "database/sql" "encoding/json" "fmt" "github.com/astaxie/beego/cache" _ "github.com/astaxie/beego/cache/redis" "github.com/beego/beego/v2/adapter/orm" orm2 "github.com/beego/beego/v2/client/orm" _ "github.com/go-sql-driver/mysql" "github.com/xuri/excelize/v2" "log" "strconv" "strings" "time" ) // 建表 // var CREATEsql = "CREATE TABLE IF NOT EXISTS `z_device_data_" + SN + " ( " + var CREATEsql = " ( " + "`t_id` int(6) NOT NULL," + "`t_sp` int(6) NOT NULL," + "`t_time` datetime NOT NULL," + "`t_t` double(6, 2) NULL DEFAULT NULL," + "`t_rh` double(6, 2) NULL DEFAULT NULL," + "`t_site` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL," + "`create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP," + "PRIMARY KEY (`t_time`, `t_id`) USING BTREE" + ") ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Compact;" type DeviceData_ struct { T_id int // 传感器id T_sp int // 传感器参数id T_t float32 // 温度 T_rh float32 // 湿度 T_site string // GPS T_time time.Time // 采集时间 Create_time time.Time //创建时间 } // 模板 type DeviceData_R struct { T_sn string `json:"t_sn"` //设备 T_id int `json:"t_id"` // 传感器id T_sp int `json:"t_sp"` // 传感器参数id T_name string `json:"t_name"` // 传感器名称 T_t float32 `json:"t_t"` // 温度 T_rh float32 `json:"t_rh"` // 湿度 T_site string `json:"t_site"` // GPS T_tl float32 `json:"t_tl"` // 温度下限 T_tu float32 `json:"t_tu"` // 温度上限 T_rhl float32 `json:"t_rhl"` // 湿度下限 T_rhu float32 `json:"t_rhu"` // 湿度上限 T_time string `json:"t_time"` // 采集时间 Create_Time string `json:"create_time"` } //func (t *DeviceData) TableName() string { // return "DeviceData" // 数据库名称 // ************** 替换 FormulaList ************** //} var redis_DeviceData cache.Cache func init() { config := fmt.Sprintf(`{"key":"%s","conn":"%s","dbNum":"%s","password":"%s"}`, "redis_DeviceData", conf.Redis_address, conf.Redis_dbNum, conf.Redis_password) fmt.Println(config) var err error redis_DeviceData, err = cache.NewCache("redis", config) if err != nil || redis_DeviceData == nil { errMsg := "failed to init redis" fmt.Println(errMsg, err) } } func DeviceData_ToDeviceData_R(r DeviceData_, maps map[int]DeviceSensorParameter_M) (t DeviceData_R) { t.T_id = r.T_id t.T_t = r.T_t t.T_rh = r.T_rh t.T_site = r.T_site t.T_time = r.T_time.Format("2006-01-02 15:04:05") t.Create_Time = r.Create_time.Format("2006-01-02 15:04:05") if sp, ok := maps[r.T_sp]; ok { t.T_sp = sp.T_sp t.T_name = sp.T_name t.T_tl = sp.T_Tlower t.T_tu = sp.T_Tupper t.T_rhl = sp.T_RHlower t.T_rhu = sp.T_RHupper } return } // ---------------- Redis ------------------- // Redis_Set(m.T_sn,m) // Redis 更新缓存 func RedisDeviceData_Set(key string, r DeviceData_R) (err error) { if redis_DeviceData.IsExist(key) { var t DeviceData_R v := redis_DeviceData.Get(key) json.Unmarshal(v.([]byte), &t) tTime, _ := time.Parse("2006-01-02 15:04:05", t.T_time) rTime, _ := time.Parse("2006-01-02 15:04:05", r.T_time) if tTime.Unix() > rTime.Unix() { // 储存的 是最新数据 return } } //json序列化 str, err := json.Marshal(r) if err != nil { fmt.Print(err) return } err = redis_DeviceData.Put(key, str, 1*time.Hour) if err != nil { fmt.Println("set key:", key, ",value:", str, err) } return } func RedisDeviceData_Get(key string) (r DeviceData_R, is bool) { if redis_DeviceData.IsExist(key) { v := redis_DeviceData.Get(key) json.Unmarshal(v.([]byte), &r) return r, true } return DeviceData_R{}, false } // ------------------------------------------------------- // 创建数据库 Device.CREATE_DeviceData("") func CREATE_DeviceData(SN string) bool { sql := "CREATE TABLE IF NOT EXISTS `z_device_data_" + SN + "` " + CREATEsql o := orm.NewOrm() _, err := o.Raw(sql).Exec() if err != nil { return false } return true } func DELETE_DeviceDatar(SN string) bool { timeStr := time.Now().Format("2006_01_02_15_04_05") //sql := "DROP TABLE z_device_data_" + SN sql := "ALTER TABLE z_device_data_" + SN + " RENAME TO " + "z_device_data_" + SN + "_dle_" + timeStr + ";" o := orm.NewOrm() _, err := o.Raw(sql).Exec() if err != nil { return false } return true } // ---------------- 特殊方法 ------------------ type DeviceData_T struct { T_id int // ID T_t float32 // 温度 T_rh float32 // 湿度 T_Site string // GPS T_time time.Time // 采集时间 } // 添加 func Add_DeviceData(SN string, v DeviceData_T) bool { //if(conf.Test_server){ // fmt.Println("Add_DeviceData:",SN , t_name , t_id , t_t , t_rh , t_tl , t_tu , t_rhl , t_rhu , t_site , t_battery , t_time) // return true //} key_time := SN + "|" + strconv.Itoa(v.T_id) + "|" + v.T_time.Format("2006-01-02 15:04:05") fmt.Println(key_time) if redis_DeviceData.IsExist(key_time) { //println("找到key:",key) return true } o := orm.NewOrm() // 检查 超过时间,查询 数据库 if time.Now().Unix()-v.T_time.Unix() >= 60*40 { // 查看是否 有记录 var maps_z []orm2.ParamsList sql_c := "SELECT COUNT(ID) FROM z_device_data_" + SN + " WHERE t_time = '" + v.T_time.Format("2006-01-02 15:04:05") + "' AND t_id = " + strconv.Itoa(v.T_id) _, err := o.Raw(sql_c).ValuesList(&maps_z) if err != nil { return false } //fmt.Println("maps_z[0][0]:",maps_z[0][0]) if lib.To_int(maps_z[0][0]) > 0 { return true } } // 开始插入数据 sql := "INSERT INTO z_device_data_" + SN + " ( `t_id`, `t_t`, `t_rh`, `t_site`, `t_time`) " + "VALUES (" + strconv.Itoa(v.T_id) + ", " + lib.To_string(v.T_t) + ", " + lib.To_string(v.T_rh) + ", '" + v.T_Site + "'," + v.T_time.Format("2006-01-02 15:04:05") + "')" // 这里有时间优化 用于一次 prepare 多次 exec,以提高批量执行的速度 fmt.Println(sql) res, err := o.Raw(sql).Exec() if err != nil { fmt.Println(err) return false } res.RowsAffected() return true } ///--------------- //type DeviceData_ struct { // T_sn string `orm:"column(t_sn);size(256);null"` // 标题 // T_id int `orm:"column(t_id);size(10);null"` // ID // T_t float32 `orm:"column(t_t);size(10);null"` // 温度 // T_rh float32 `orm:"column(t_rh);size(10);null"` // 湿度 // T_site string `orm:"column(t_site);type(timestamp);null;"` // GPS // T_time string `orm:"column(t_time);type(timestamp);null;"` // 采集时间 //} //type DeviceData_New struct { // T_name string `orm:"column(t_name);size(256);null"` // 标题 // T_id int `orm:"column(t_id);size(10);null"` // ID // T_t float32 `orm:"column(t_t);size(10);null"` // 温度 // T_rh float32 `orm:"column(t_rh);size(10);null"` // 湿度 // T_Tlower float32 `orm:"column(t_tl);size(10);null"` // 湿度 // T_Tupper float32 `orm:"column(t_tu);size(10);null"` // 湿度 // T_RHlower float32 `orm:"column(t_rhl);size(10);null"` // 湿度 // T_RHupper float32 `orm:"column(t_rhu);size(10);null"` // 湿度 // T_Site string `orm:"column(t_site);null;"` // GPS // T_Dattery int `orm:"column(t_dattery);size(10);null"` // 电量 // T_time time.Time `orm:"column(t_time);type(timestamp);null;"` // 采集时间 //} func Read_DeviceData_ById_List(SN string, T_id int, Time_start_ string, Time_end_ string, page int, page_z int, SParamMap map[int]DeviceSensorParameter_M, sort string) ([]DeviceData_R, int) { o := orm.NewOrm() var maps []DeviceData_ var maps_z []orm2.ParamsList var r []DeviceData_R var offset int if page_z == 0 { page_z = conf.Page_size } if page <= 1 { offset = 0 } else { offset = (page - 1) * page_z } sql_time := "" if len(Time_start_) > 1 { sql_time += " t_time >= '" + Time_start_ + "' AND " } if len(Time_end_) > 1 { sql_time += " t_time <= '" + Time_end_ + "' AND " } sql := "SELECT COUNT(t_id) FROM z_device_data_" + SN + " WHERE " + sql_time + " t_id = " + strconv.Itoa(T_id) fmt.Println(sql) _, err := o.Raw(sql).ValuesList(&maps_z) if err != nil { return r, 0 } if len(maps_z) == 0 { return r, 0 } //fmt.Println("maps_z;",maps_z[0][0]) //t_tl,t_tu,t_rhl,t_rhu, sql = "SELECT t_id,t_sp,t_t,t_rh,t_site,DATE_FORMAT(t_time,'%Y-%m-%d %H:%i:%s') AS t_time,DATE_FORMAT(create_time,'%Y-%m-%d %H:%i:%s') AS create_time FROM z_device_data_" + SN + " WHERE " + sql_time + " t_id = " + strconv.Itoa(T_id) + " ORDER BY t_time " + sort if page_z != 9999 { sql = sql + " LIMIT " + strconv.Itoa(offset) + "," + strconv.Itoa(page_z) } //fmt.Println(sql) _, err = o.Raw(sql).QueryRows(&maps) //value, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", cnt), 64) key, _ := strconv.Atoi(maps_z[0][0].(string)) fmt.Println("\n\n\n\n\n\n搜索结果:", maps) for _, v := range maps { r = append(r, DeviceData_ToDeviceData_R(v, SParamMap)) } return r, key } func Read_SqlRaw(T_SQL string) []orm2.Params { o := orm.NewOrm() var lists []orm2.Params fmt.Println(T_SQL) o.Raw(T_SQL).Values(&lists) fmt.Println(T_SQL+":", len(lists)) return lists } func Read_SqlRawL(T_SQL string, T_data []string) (string, []orm2.Params) { o := orm.NewOrm() var lists []orm2.Params fmt.Println(T_SQL) _, err := o.Raw(T_SQL, T_data).Values(&lists) if err != nil { return err.Error(), lists } return "", lists } func Read_DeviceData_By_T_snid_List(T_snid string, Time_start_ string, Time_end_ string, page int, page_z int, sort string) ([]DeviceData_R, int64) { T_snid_list := strings.Split(T_snid, "|") var maps []DeviceData_R var maps_num int64 var offset, offset_z int for _, v := range T_snid_list { sn_id := strings.Split(v, ",") if len(sn_id) == 2 { SParamMap := Read_DeviceSensorParameter_Map_All(sn_id[0], lib.To_int(sn_id[1])) r_maps, r_maps_num := Read_DeviceData_ById_List(sn_id[0], lib.To_int(sn_id[1]), Time_start_, Time_end_, 0, 9999, SParamMap, sort) //for i, _ := range r_maps { // r_maps[i].T_sn = sn_id[0] //} //添加一个sn设备标识 for i := range r_maps { r_maps[i].T_sn = sn_id[0] } maps = append(maps, r_maps...) maps_num = maps_num + int64(r_maps_num) fmt.Println("加载数据:", sn_id[0], sn_id[1], r_maps_num) } } if page <= 1 { offset = 0 } else { page -= 1 offset = page * page_z } offset_z = offset + page_z if maps_num < int64(offset_z) { offset_z = int(maps_num) } if page_z == 9999 { fmt.Println("总数据:", maps_num, " 导出") return maps, maps_num } fmt.Println("总数据:", maps_num, " 截取", offset, offset+page_z) return maps[offset:offset_z], maps_num } // DeleteDeviceDataByDeviceDataRList 删除记录 func DeleteDeviceDataByDeviceDataRList(datas []DeviceData_R) { o := orm.NewOrm() for _, v := range datas { _, err := o.Raw(fmt.Sprintf("delete from z_device_data_%s where t_id = ? and t_t = ? and t_rh = ? and t_site = ? and create_time = ?", v.T_sn), v.T_id, v.T_t, v.T_rh, v.T_site, v.Create_Time).Exec() if err != nil { fmt.Println(err.Error()) } } } func DeleteDeviceDataByTime(sn, t_id, time_start, time_end string) (sql.Result, error) { o := orm.NewOrm() sprintf := fmt.Sprintf("delete from z_device_data_%s where t_id=%s and t_time >= '%s' and t_time <= '%s'", sn, t_id, time_start, time_end) log.Println(sprintf) count, err := o.Raw(sprintf).Exec() if err != nil { log.Println(err.Error()) return count, err } return count, nil } // ImportDeviceData 批量导入 func ImportDeviceData(reader *excelize.File, sn string) string { sheetName := reader.GetSheetName(0) rows, err := reader.GetRows(sheetName) o := orm.NewOrm() if err != nil { panic(any(err.Error())) } values := make([]string, len(rows)-1) for i, row := range rows { if i == 0 { //跳过第一条头部描述 continue } // 定义匹配的解析格式 format := row[4] _, err := time.Parse("2006-01-02 15:04:05", row[4]) if err != nil { layout := "1/2/06 15:04" parsedTime, _ := time.Parse(layout, row[4]) year := parsedTime.Year() if year < 100 { year += 2000 } parsedTime = time.Date(year, parsedTime.Month(), parsedTime.Day(), parsedTime.Hour(), parsedTime.Minute(), parsedTime.Second(), parsedTime.Nanosecond(), time.UTC) format = parsedTime.Format("2006-01-02 15:04:05") } isrepeat := Read_DeviceData_Execl_ISREPEAT(sn, format, row[0]) t_sp := Read_device_sensor_parameter(sn, row[0]) if t_sp == "" { sprintf := fmt.Sprintf("当前sn或探头参数ID不存在:%s,%s", sn, row[0]) return sprintf } if isrepeat { //如果重复就用更新数据 sql := fmt.Sprintf("UPDATE z_device_data_%s SET t_t=%s,t_rh=%s WHERE t_time='%s' AND t_id=%s ", sn, row[1], row[2], format, row[0]) _, err := o.Raw(sql).Exec() if err != nil { fmt.Println(err.Error()) return "更新失败" } } else { // t_id,t_t,t_rh,t_time //传感器 传感器参数ID 温度 湿度 GPS 采集时间 创建时间 parse, _ := time.Parse("2006-01-02 15:04:05", format) parse = parse.Add(time.Millisecond * 8000) parse.Format("2006-01-02 15:04:05") values[i-1] = fmt.Sprintf("(%s,%s,%s,%s,'','%s')", row[0], t_sp, row[1], row[2], format) sprintf := fmt.Sprintf("insert into z_device_data_%s (t_id,t_sp,t_t,t_rh,t_site,t_time,create_time) values (%s,%s,%s,%s,'%s','%s','%s')", sn, row[0], t_sp, row[1], row[2], row[3], format, parse.Format("2006-01-02 15:04:05")) log.Println(sprintf) //执行SQL _, err := o.Raw(sprintf).Exec() if err != nil { fmt.Println("执行失败") return "请检查表格是否具有重复数据!!!" } } } //sqlStatement := fmt.Sprintf("insert into z_device_data_%s(t_id,t_sp,t_t,t_rh,t_site,t_time) values %s", sn, strings.Join(values, ",")) //fmt.Println("执行批量导入SQL:", sqlStatement) return "导入成功" } func Read_DeviceData_Execl_ISREPEAT(sn, t_time, t_id string) bool { o := orm.NewOrm() var table struct { T_id string T_time string } sql := fmt.Sprintf("select t_id,t_time from z_device_data_%s where t_time = '%s' and t_id=%s", sn, t_time, t_id) err := o.Raw(sql).QueryRow(&table) if err != nil { fmt.Println(err.Error()) return false } else { if table.T_id != "" { return true } } return false } // ExportDeviceData 导出 未完成 /*func ExportDeviceData(sns []string, startTime, endTime string) *os.File { f, err := os.Create(fmt.Sprintf("[%s]导出数据.zip", time.Now().Format("2006-01-02"))) if err != nil { fmt.Println(err.Error()) } z := zip.NewWriter(f) o := orm.NewOrm() sqlStatement := "select * from z_device_data_%s where create_time between %s and %s" title := map[string]string{ "A1": "传感器", "B1": "传感器参数ID", "C1": "温度", "D1": "湿度", "E1": "GPS", "F1": "采集时间", "G1": "创建时间", } for _, sn := range sns { datas := make([]DeviceData_, 0) sqlNew := fmt.Sprintf(sqlStatement, sn, startTime, endTime) o.Raw(sqlNew).QueryRows(&datas) //创建压缩包中的excel excelT, err := z.Create(fmt.Sprintf("%s.xlsx", sn)) if err != nil { fmt.Println(err.Error()) } //创建新的excel excelNew := excelize.NewFile() excelNew.NewSheet(sn) //设置表头 for k, v := range title { excelNew.SetCellStr(sn, k, v) } //设置内容 for i, v := range datas { } } return f } */ // Update_DeviceSensorData 更新设备数据 func Update_DeviceSensorData(v DeviceData_R, fieldName, val string) error { o := orm.NewOrm() if fieldName == "t__tlower" { split := strings.Split(val, "|") i := strings.Split(split[0], "~") t__tlower := i[0] t__tupper := i[1] i2 := strings.Split(split[1], "~") t__r_hlower := i2[0] t__r_hupper := i2[1] sqlStatemt := fmt.Sprintf("update device_sensor_parameter set t__tlower =%s , t__tupper = %s , t__r_hlower = %s , t__r_hupper = %s where id =%d ", t__tlower, t__tupper, t__r_hlower, t__r_hupper, v.T_sp) //log.Println(sqlStatemt) _, err := o.Raw(sqlStatemt).Exec() if err != nil { return err } return nil } else { sqlStatemt := fmt.Sprintf("update z_device_data_%s set %s = ? where t_id = ? and t_t = ? and t_rh = ? and t_site = ? and create_time = ?", v.T_sn, fieldName) log.Println(sqlStatemt) log.Println("创建时间:", v.Create_Time) _, err := o.Raw(sqlStatemt, val, v.T_id, v.T_t, v.T_rh, v.T_site, v.Create_Time).Exec() if err != nil { return err } return nil } } // 复制添加数据 func Copy_DeviceData(T_sn, T_id string, T_Rh, T_T any, T_Site, CreateTime string) { T_sp := Read_device_sensor_parameter(T_sn, T_id) o := orm.NewOrm() sprintf := fmt.Sprintf("insert into z_device_data_%s(t_id,t_sp,t_time,t_t,t_rh,t_site,create_time) values (?,?,?,?,?,?,?)", T_sn) //log.Println(sprintf) _, err := o.Raw(sprintf, T_id, T_sp, CreateTime, T_T, T_Rh, T_Site, CreateTime).Exec() if err != nil { fmt.Println(err.Error()) } } func Read_DeviceData_ById_Year_List(SN string) []orm2.ParamsList { o := orm.NewOrm() var maps_z []orm2.ParamsList //sql = "SELECT t_name,t_t,t_rh,t_tl,t_tu,t_rhl,t_rhu,t_site,DATE_FORMAT(t_time,'%Y-%c-%d %H:%i:%s') AS t_time FROM z_device_data_"+SN+" WHERE "+sql_time+" t_id = "+ strconv.Itoa(T_id) +" ORDER BY t_time DESC " sql := "SELECT DATE_FORMAT(t_time,\"%m\") AS m ,DATE_FORMAT(t_time,\"%d\") AS d FROM z_device_data_" + SN + " WHERE t_time > '" + strconv.Itoa(time.Now().Year()) + "-0-0 00:00:00' GROUP BY DATE_FORMAT(t_time,\"%m\");" fmt.Println(sql) num, err := o.Raw(sql).ValuesList(&maps_z) if err == nil && num > 0 { fmt.Println(maps_z[0][0]) // slene } //value, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", cnt), 64) //key,_ := strconv.Atoi(maps_z[0][0].(string)) return maps_z } // func Read_DeviceData_ById_Month_List(SN string) []orm2.ParamsList { o := orm.NewOrm() var maps_z []orm2.ParamsList currentTime := time.Now() //获取当前时间,类型是Go的时间类型Time time_x := currentTime.Format("2006-01") + "-00 00:00:00" //sql = "SELECT t_name,t_t,t_rh,t_tl,t_tu,t_rhl,t_rhu,t_site,DATE_FORMAT(t_time,'%Y-%c-%d %H:%i:%s') AS t_time FROM z_device_data_"+SN+" WHERE "+sql_time+" t_id = "+ strconv.Itoa(T_id) +" ORDER BY t_time DESC " sql := "SELECT DATE_FORMAT(t_time,\"%d\") AS d FROM z_device_data_" + SN + " WHERE t_time > '" + time_x + "' GROUP BY DATE_FORMAT(t_time,\"%d\");" fmt.Println(sql) o.Raw(sql).ValuesList(&maps_z) //value, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", cnt), 64) //key,_ := strconv.Atoi(maps_z[0][0].(string)) return maps_z } func Read_device_sensor_parameter(SN, t_id string) string { o := orm.NewOrm() var maps_z []orm2.ParamsList //sql = "SELECT t_name,t_t,t_rh,t_tl,t_tu,t_rhl,t_rhu,t_site,DATE_FORMAT(t_time,'%Y-%c-%d %H:%i:%s') AS t_time FROM z_device_data_"+SN+" WHERE "+sql_time+" t_id = "+ strconv.Itoa(T_id) +" ORDER BY t_time DESC " sql := "SELECT ID FROM device_sensor_parameter WHERE `t_sn` = '" + SN + "' AND `t_id` = '" + t_id + "' AND `t__state` = '1' ORDER BY `ID` DESC LIMIT 0,2;" fmt.Println(sql) list, err := o.Raw(sql).ValuesList(&maps_z) if err != nil { return "" } if list == 0 { fmt.Println("没有数据") return "" } else { return maps_z[0][0].(string) } //value, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", cnt), 64) //key,_ := strconv.Atoi(maps_z[0][0].(string)) } func Read_DeviceData_ById_Day_List(SN string) []orm2.ParamsList { o := orm.NewOrm() var maps_z []orm2.ParamsList currentTime := time.Now() //获取当前时间,类型是Go的时间类型Time time_x := currentTime.Format("2006-01-02") + " 00:00:00" //sql = "SELECT t_name,t_t,t_rh,t_tl,t_tu,t_rhl,t_rhu,t_site,DATE_FORMAT(t_time,'%Y-%c-%d %H:%i:%s') AS t_time FROM z_device_data_"+SN+" WHERE "+sql_time+" t_id = "+ strconv.Itoa(T_id) +" ORDER BY t_time DESC " sql := "SELECT DATE_FORMAT(t_time,\"%H\") AS m FROM z_device_data_" + SN + " WHERE t_time > '" + time_x + "' GROUP BY DATE_FORMAT(t_time,\"%H\");" fmt.Println(sql) o.Raw(sql).ValuesList(&maps_z) //value, _ := strconv.ParseFloat(fmt.Sprintf("%.2f", cnt), 64) //key,_ := strconv.Atoi(maps_z[0][0].(string)) return maps_z } func Read_DeviceData_List_GROUP_BY_t_time(SN string, Time_start_ string, Time_end_ string) []orm2.ParamsList { o := orm.NewOrm() var maps_z []orm2.ParamsList sql_time := "" if len(Time_start_) > 1 { sql_time += " t_time >= '" + Time_start_ + "' AND " + " t_time <= '" + Time_end_ + "' " } sql := "SELECT DATE_FORMAT(t_time,'%Y-%c-%d %H:%i:%s') AS t_time FROM z_device_data_" + SN + " WHERE " + sql_time + " GROUP BY t_time ORDER BY t_time DESC " fmt.Println(sql) o.Raw(sql).ValuesList(&maps_z) return maps_z } // GetCompanyBySn 根据sn查询公司名称 func GetCompanyBySn(sn string) (string, error) { o := orm.NewOrm() sqls := fmt.Sprintf("SELECT t_pid FROM `device` WHERE t_sn='%s'", sn) var TPid string err := o.Raw(sqls).QueryRow(&TPid) if err != nil { return "", err } sqlCompany := fmt.Sprintf("SELECT t_name FROM `company` WHERE id='%s'", TPid) var TName string err = o.Raw(sqlCompany).QueryRow(&TName) if err != nil { return "", err } return TName, nil }