修改二板涨停情况查询，新增按条件筛选

pkg/config/config.go

@@ -7,12 +7,13 @@ import (
 
 type Config struct {
 	Database struct {
-		User     string
-		Password string
-		Host     string
-		Port     int
-		Dbname   string
-		Charset  string
+		User      string
+		Password  string
+		Host      string
+		Port      int
+		Dbname    string
+		Charset   string
+		Collation string
 	}
 	Server struct {
 		Port int
@@ -39,8 +40,12 @@ func InitConfig() {
 // GetDSN 生成 MySQL 连接字符串
 func GetDSN() string {
 	db := AppConfig.Database
-	return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=True&loc=Local",
-		db.User, db.Password, db.Host, db.Port, db.Dbname, db.Charset)
+	collation := db.Collation
+	if collation == "" {
+		collation = "utf8mb4_unicode_ci"
+	}
+	return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&collation=%s&parseTime=True&loc=Local",
+		db.User, db.Password, db.Host, db.Port, db.Dbname, db.Charset, collation)
 }
 
 // GetServerPort 获取服务器端口字符串