Merge pull request #1093 from nickmyb/fix_pgsql_initdb

fix: 修复初始化PostgreSQL时尝试数据库连接验证时用户名同名数据库不存在导致的初始化失败问题

server/model/system/request/sys_init.go

@@ -34,9 +34,9 @@ func (i *InitDB) PgsqlEmptyDsn() string {
 		i.Host = "127.0.0.1"
 	}
 	if i.Port == "" {
-		i.Port = "3306"
+		i.Port = "5432"
 	}
-	return "host=" + i.Host + " user=" + i.UserName + " password=" + i.Password + " port=" + i.Port + " " + "sslmode=disable TimeZone=Asia/Shanghai"
+	return "host=" + i.Host + " user=" + i.UserName + " password=" + i.Password + " port=" + i.Port + " dbname=" + "postgres" + " " + "sslmode=disable TimeZone=Asia/Shanghai"
 }
 
 // ToMysqlConfig 转换 config.Mysql