查打印机状态

business/jxstore/cms/print.go

@@ -1,12 +1,20 @@
 package cms
 
 import (
+	"encoding/json"
 	"fmt"
 	"git.rosy.net.cn/jx-callback/business/model"
 	"git.rosy.net.cn/jx-callback/business/model/dao"
+	"net"
+	"os"
 	"time"
 )
 
+type PrintInfo struct {
+	PrintNo string
+	AppID   int
+}
+
 func AddPrinter(appID int, printNo, printKey, name string) (err error) {
 	var (
 		db = dao.GetDB()
@@ -110,3 +118,46 @@ func GetPrintMsg(appID int, msgID string) (printMsg *model.PrintMsg, err error)
 	}
 	return printMsg, err
 }
+
+func GetPrinterStatus(appID int, printNo string) (status int, err error) {
+	var (
+		db = dao.GetDB()
+	)
+	//看有没有
+	if printers, _ := dao.GetPrinters(db, appID, printNo); len(printers) == 0 {
+		return status, fmt.Errorf("该应用下未找到该打印机！print_no : %v", printNo)
+	} else {
+		server := "print.jxcs.net:8000"
+		tcpAddr, err := net.ResolveTCPAddr("tcp4", server)
+		if err != nil {
+			os.Exit(1)
+			return status, err
+		}
+		conn, err := net.DialTCP("tcp", nil, tcpAddr)
+		if err != nil {
+			return status, err
+		}
+		status = connHandler(conn, &PrintInfo{
+			PrintNo: printNo,
+			AppID:   appID,
+		})
+	}
+	return status, err
+}
+
+func connHandler(c net.Conn, printInfo *PrintInfo) (status int) {
+	defer c.Close()
+	//缓冲
+	buf := make([]byte, 1024)
+	for {
+		data, _ := json.Marshal(printInfo)
+		//写入数据
+		c.Write(data)
+		//服务器端返回的数据写入buf
+		c.Read(buf)
+		//status = buf[:]
+		//服务器端回传的信息
+		//fmt.Println("server response:", string(buf[0:cnt]))
+	}
+	return status
+}