Python Oracle连接与操作封装

一、封装方式一

#encoding:utf-8

import cx_Oracle
class Oracle_Status_Output:
    def __init__(self,db_name,db_password,db_tns):
        try:
            self.db = cx_Oracle.connect(db_name,db_password,db_tns)
            self.cursor = self.db.cursor()
        except Exception as e:
            print('Wrong')
            print(e)
    def oracle_status_select(self,sql):
        try:
            self.cursor.execute(sql)
            col=col=self.cursor.description
            v_result=self.cursor.fetchall()
            return v_result,col
        except Exception as e:
            print(e)
    def oracle_status_dml(self,sql):
        try:
            self.cursor.execute(sql)
            self.db.commit()
            print("DML OK")
        except Exception as e:
            print(e)
    def close(self):
        self.cursor.close()
        self.db.close()

二、封装方式二

#  coding=utf-8

import cx_Oracle
import os
import json

os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
"""python version 3.7"""


class TestOracle(object):
    def __init__(self, user, pwd, ip, port, sid):
        self.connect = cx_Oracle.connect(user + "/" + pwd + "@" + ip + ":" + port + "/" + sid)
        self.cursor = self.connect.cursor()

    def select(self, sql):
        list = []
        self.cursor.execute(sql)
        result = self.cursor.fetchall()
        col_name = self.cursor.description
        for row in result:
            dict = {}
            for col in range(len(col_name)):
                key = col_name[col][0]
                value = row[col]
                dict[key] = value
            list.append(dict)
        js = json.dumps(list, ensure_ascii=False, indent=2, separators=(',', ':'))
        return js

    def disconnect(self):
        self.cursor.close()
        self.connect.close()

    def insert(self, sql, list_param):
        try:
            self.cursor.executemany(sql, list_param)
            self.connect.commit()
            print("插入ok")
        except Exception as e:
            print(e)
        finally:
            self.disconnect()

    def update(self, sql):
        try:
            self.cursor.execute(sql)
            self.connect.commit()

        except Exception as e:
            print(e)
        finally:
            self.disconnect()

    def delete(self, sql):
        try:
            self.cursor.execute(sql)
            self.connect.commit()
            print("delete ok")
        except Exception as e:
            print(e)
        finally:
            self.disconnect()