a

business/jxstore/event/event_tcp.go

@@ -219,7 +219,7 @@ func handleConn(c net.Conn) {
 				tcpClient.s.Unlock()
 			}
 		} else if strings.Contains(data, printText) {
-			globals.SugarLogger.Debugf("handleConn print: %v", data)
+			globals.SugarLogger.Debugf("handleConn print callback: %v", data)
 			changePrintMsg(data)
 		}
 	}
@@ -272,7 +272,7 @@ func printFail() (err error) {
 					}
 				}
 				tcpClient.s.RUnlock()
-				if c != nil && tcpClient.Clients[printMsg.PrintNo].Status == printerStatusOnline {
+				if c != nil {
 					if _, err = c.Write(data); err != nil {
 						globals.SugarLogger.Debugf("handleTcpMessages err [%v]", err)
 						delete(tcpClient.Clients, printMsg.PrintNo)
@@ -424,7 +424,6 @@ func buildMsg(printMsg *model.PrintMsg) (data []byte, err error) {
 		const1    = "0200ff50"
 		printInit = "1b40" //打印机初始化
 		//voice     = "1d6b401dfd001a01015b7631365d736f756e64622cc4fad3d0d0c2b6a9b5a5c0b1" //语音，中国
-		check = "aa"
 		//qr                                  = "1d58021b5a0001061600747470733a2f2f7777772e62616964752e636f6d2f1b000A0A0A1B40"
 		orderNoHexH, orderNoHexL, printData string
 	)
@@ -433,10 +432,22 @@ func buildMsg(printMsg *model.PrintMsg) (data []byte, err error) {
 	printDataGBK, _ := jxutils.Utf8ToGbk([]byte(content))
 	printData = hex.EncodeToString(printDataGBK)
 	printData = replaceContent(printData, printMsg)
-	lenData := int64(len(str) + len(const1) + len(orderNoHexH) + len(orderNoHexL) + len(printInit) + len(check) + len(hexSignBROrEXE) + 4 + len(printData))
+	lenData := int64(len(str) + len(const1) + len(orderNoHexH) + len(orderNoHexL) + len(printInit) + 2 + len(hexSignBROrEXE) + 4 + len(printData))
 	x1, x2 := int2h8l8(lenData / 2)
-	dataStr := str + x1 + x2 + const1 + orderNoHexH + orderNoHexL + printInit + printData + hexSignBROrEXE + check
-	return jxutils.Hextob(dataStr), err
+	dataStr := str + x1 + x2 + const1 + orderNoHexH + orderNoHexL + printInit + printData + hexSignBROrEXE
+	check := getCheckSum(dataStr)
+	return jxutils.Hextob(dataStr + check), err
+}
+
+func getCheckSum(str string) (check string) {
+	var sum int64
+	for i := 0; i < len(str); i = i + 2 {
+		b := string(str[i]) + string(str[i+1])
+		bt, _ := strconv.ParseInt(b, 16, 32)
+		sum += bt
+	}
+	_, check = int2h8l8(sum)
+	return check
 }
 
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