bug fix and shell optimization

src/common/db/mysql.go

@@ -2,6 +2,7 @@ package db
 
 import (
 	"Open_IM/src/common/config"
+	"Open_IM/src/common/log"
 	"fmt"
 	"github.com/jinzhu/gorm"
 	_ "github.com/jinzhu/gorm/dialects/mysql"
@@ -15,10 +16,13 @@ type mysqlDB struct {
 }
 
 func initMysqlDB() {
+	//When there is no open IM database, connect to the mysql built-in database to create openIM database
 	dsn := fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8mb4&parseTime=true&loc=Local",
 		config.Config.Mysql.DBUserName, config.Config.Mysql.DBPassword, config.Config.Mysql.DBAddress[0], "mysql")
+
 	db, err := gorm.Open("mysql", dsn)
 	if err != nil {
+		log.Error("", "", dsn)
 		panic(err)
 	}