Django中(原生mysql封裝)

1.函數封裝

import pymysql# 查 所數據def get_all(sql): conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') cur = conn.cursor(cursor=pymysql.cursors.DictCursor) cur.execute(sql) res = cur.fetchall() cur.close() conn.close() return res# 查 一行數據def get_one(sql,args): conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') cur = conn.cursor(cursor=pymysql.cursors.DictCursor) cur.execute(sql,args) res = cur.fetchone() cur.close() conn.close() return res# 增 刪 改 都要提交 commitdef get_mif(sql,args): conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') cur = conn.cursor(cursor=pymysql.cursors.DictCursor) cur.execute(sql,args) conn.commit() cur.close() conn.close()# 增 刪 改 都要提交 commit# 添加并且帶返回值def get_create(sql,args): conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') cur = conn.cursor(cursor=pymysql.cursors.DictCursor) cur.execute(sql,args) conn.commit() cur.close() conn.close() return cur.lastrowid # python插入記錄后取得主鍵id的方法(cursor.lastrowid和conn.insert_id())# 增 刪 改 都要提交 commit# 批量加入 以元祖的形式傳參數 就是添加幾次次提交一次def mul_mode(sql, args): conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') cur = conn.cursor(cursor=pymysql.cursors.DictCursor) # self.cursor.executemany('insert into user (id,name) values (%s,%s)',[(1,'aaa'),(2,'bbb'),(3,'ccc')]) 傳參方式 cur.executemany(sql, args) conn.commit() cur.close() conn.close()

2.對象封裝

import pymysql# 注意 args 參數可以傳空值[]class Mysqls(object): def __init__(self): # 讀取配置文件 self.connect() def connect(self): self.conn = pymysql.connect(host='localhost', user='root', password='root', database='db6') # 可以把主機連接等寫入配置文件 等 self.cursor=self.conn.cursor(cursor=pymysql.cursors.DictCursor) # 獲取所以數據 def get_all(self,sql,args): self.cursor.execute(sql,args) res = self.cursor.fetchall() return res # 獲取一行數據 def get_one(self,sql,args): self.cursor.execute(sql, args) res = self.cursor.fetchone() return res # 添加 就是添加一次提交多次 def get_mode (self,sql,args): self.cursor.execute(sql, args) self.conn.commit() # 添加并且帶返回值 def get_create(self,sql,args): self.cursor.execute(sql,args) self.conn.commit() return self.cursor.lastrowid # python插入記錄后取得主鍵id的方法(cursor.lastrowid和conn.insert_id()) # 批量加入 以元祖的形式傳參數 就是添加一次提交一次 def mul_mode(self, sql, args): # self.cursor.executemany('insert into user (id,name) values (%s,%s)',[(1,'aaa'),(2,'bbb'),(3,'ccc')]) 傳參方式 self.cursor.executemany(sql, args) self.conn.commit() def get_close(self): self.cursor.close() self.conn.close()

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