发布时间:2023-11-11 15:30
主要需要修改数据库的相关信息,端口号、用户名、密码等
其中数据库得存在,不然会报错 :
#!/usr/bin/env python # -*- coding: utf-8 -*- # @description:导出数据库文件sql import os class InitSql(object): sql_file = \"A.sql\" def import_server_db(self): mysqldump_commad_dict = {\'dumpcommad\': \'mysqldump \', \'server\': \'localhost\', \'user\': \'root\', \'password\': \'root\', \'port\': 3306, \'db\': \'studentmanagersystem\'} # mysqldump 命令 sqlfromat = \"mysqldump --column-statistics=0 -h%s -u%s -p%s -P%s %s > %s\" # 生成相应的sql语句 sql = (sqlfromat % (mysqldump_commad_dict[\'server\'], mysqldump_commad_dict[\'user\'], mysqldump_commad_dict[\'password\'], mysqldump_commad_dict[\'port\'], mysqldump_commad_dict[\'db\'], self.sql_file)) print(\"执行的导出数据库的sql:\" + sql) result = os.system(sql) return result if __name__ == \'__main__\': initSql = InitSql() initSql.import_server_db()
生成的sql文件如下所示:
-- MySQL dump 10.13 Distrib 8.0.29, for Win64 (x86_64) -- -- Host: localhost Database: studentmanagersystem -- ------------------------------------------------------ -- Server version 8.0.29 /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */; /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */; /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */; /*!50503 SET NAMES utf8mb4 */; /*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */; /*!40103 SET TIME_ZONE=\'+00:00\' */; /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE=\'NO_AUTO_VALUE_ON_ZERO\' */; /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */; -- -- Table structure for table `studenttable` -- DROP TABLE IF EXISTS `studenttable`; /*!40101 SET @saved_cs_client = @@character_set_client */; /*!50503 SET character_set_client = utf8mb4 */; CREATE TABLE `studenttable` ( `number` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL, `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `sex` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `classes` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `floor` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `room` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `tel` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `money` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, PRIMARY KEY (`number`) USING BTREE ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci ROW_FORMAT=DYNAMIC; /*!40101 SET character_set_client = @saved_cs_client */; -- -- Dumping data for table `studenttable` -- LOCK TABLES `studenttable` WRITE; /*!40000 ALTER TABLE `studenttable` DISABLE KEYS */; INSERT INTO `studenttable` VALUES (\'2201\',\'刘同学\',\'男\',\'1班\',\'A1\',\'101\',\'1112\',\'30\'),(\'2202\',\'张同学\',\'男\',\'2班\',\'A2\',\'211\',\'1121\',\'13\'),(\'2203\',\'管同学\',\'女\',\'2班\',\'A3\',\'121\',\'1122\',\'11\'),(\'2204\',\'管同学\',\'女\',\'2班\',\'A3\',\'121\',\'1122\',\'11\'),(\'2205\',\'刘同学\',\'女\',\'2班\',\'A3\',\'121\',\'1122\',\'11\'),(\'2206\',\'张同学\',\'男\',\'2班\',\'A2\',\'211\',\'1121\',\'13\'),(\'2208\',\'杨同学\',\'男\',\'1班\',\'A1\',\'101\',\'1112\',\'30\'),(\'2209\',\'蔡同学\',\'男\',\'1班\',\'A1\',\'101\',\'1112\',\'30\'); /*!40000 ALTER TABLE `studenttable` ENABLE KEYS */; UNLOCK TABLES; /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */; /*!40101 SET SQL_MODE=@OLD_SQL_MODE */; /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */; /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */; /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */; /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */; /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */; /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */; -- Dump completed on 2022-06-05 0:30:03
这里的话其实就是将SQL文件进行分割成一条条SQL语句,然后顺序执行即可
import pymysql from pathlib import Path class ConnectMsql: def __init__(self, host=\'localhost\', port=3306, user=\'root\', password=\'root\', database=\"studentmanagersystem\", filename: str = \"studenttable.sql\"): \"\"\" :param host: 域名 :param port: 端口 :param user: 用户名 :param password: 密码 :param database: 数据库名 :param filename: 文件名称 \"\"\" self._host: str = host self._port: int = port self._user: str = user self._password: str = password self._database: str = database self._file_path = Path(__file__).parent.joinpath(filename) def _show_databases_and_create(self): \"\"\" 查询数据库是否存在,不存在则进行新建操作 :return: \"\"\" connection = pymysql.connect(host=self._host, port=self._port, user=self._user, password=self._password, cursorclass=pymysql.cursors.DictCursor) with connection: with connection.cursor() as cursor: cursor.execute(\'show databases;\') result = cursor.fetchall() results = self._database not in tuple(x[\"Database\"] for x in result) if results: with connection.cursor() as cursor: cursor.execute(f\'create database {self._database};\') with connection.cursor() as cursor: cursor.execute(\'show databases;\') result = cursor.fetchall() results = self._database in tuple(x[\"Database\"] for x in result) return results if results else result else: return True def _export_databases_data(self): \"\"\" 读取.sql文件,解析处理后,执行sql语句 :return: \"\"\" if self._show_databases_and_create() is True: connection = pymysql.connect(host=self._host, port=self._port, user=self._user, password=self._password, database=self._database, charset=\'utf8\') # 读取sql文件,并提取出sql语句 results, results_list = \"\", [] with open(self._file_path, mode=\"r+\", encoding=\"utf-8\") as r: for sql in r.readlines(): # 去除数据中的“\\n”和“\\r”字符 sql = sql.replace(\"\\n\", \"\").replace(\"\\r\", \"\") # 获取不是“--”开头且不是“--”结束的数据 if not sql.startswith(\"--\") and not sql.endswith(\"--\"): # 获取不是“--”的数据 if not sql.startswith(\"--\"): results = results + sql # 根据“;”分割数据,处理后插入列表中 for i in results.split(\";\"): if i.startswith(\"/*\"): results_list.append(i.split(\"*/\")[1] + \";\") # print(i.split(\"*/\")[1] + \";\") else: results_list.append(i + \";\") # print(i + \";\") # 执行sql语句 with connection: with connection.cursor() as cursor: # 循环获取sql语句 for x in results_list[:-1]: if x != \";\": print(x) # 执行sql语句 cursor.execute(x) # 提交事务 connection.commit() else: return \"sql全部语句执行成功 !\" @property def sql_run(self): \"\"\" 执行方法 :return: \"\"\" return self._export_databases_data() if __name__ == \'__main__\': res = ConnectMsql().sql_run print(res)
利用Navicat软件可视化数据库,可以看到导入SQL文件成功
选择需要导出的数据表——右键——转储为SQL文件——数据和结构
这样就可以将数据表的结构和数据都一起保存在SQL文件中
右键选中需要导入的数据库——运行SQL文件
点击开始后,即开始运行SQL文件,出现下述字样表明导入SQL文件成功
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