目录
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Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj....
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项目启动报错The server time zone value '�й���ʱ��' is unrecognize
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Python之MySQLdb
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj....
总体概括就是两个异常:
1. Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
原因:加载类'com.mysql.jdbc.Driver' 已经过时了。新的驱动类是“com.mysql.cj.jdbc.Driver”。驱动程序通过SPI自动注册,而手动加载类通常是不必要的。、
解决方法:1. 使用8.0.13版本的驱动 2.将驱动 com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver
jdbc.driver=com.mysql.cj.jdbc.Driver
2. The server time zone value '???ú±ê×??±??' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
原因:服务器时区值“????±××?±?无法识别或代表一个以上的时区。如果希望利用时区支持,则必须配置服务器或JDBC驱动程序(通过serverTimezone配置属性)以使用更具体的时区值。
解决方案:jdbc.url 加上 characterEcoding=utf-8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
jdbc:mysql://127.0.0.1:3306/xxx?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2B8
项目启动报错The server time zone value '�й���ʱ��' is unrecognize
报错The server time zone value '�й���ʱ��' is unrecognized or represents more than one time zone. You must...
原因是使用了Mysql Connector/J 6.x以上的版本,然后就报了时区的错误,解决方法:
在配置url的时候不能简单写成 :
jdbc:mysql://localhost:3306/yzu?serverTimezone=UTC
而是要写成 :
jdbc:mysql://localhost:3306/yzu?serverTimezone=UTC
Python之MySQLdb
MySQLdb是用于Python链接Mysql数据库的接口,它实现了Python数据库API规范V2.0,基于MySql C API上建立的。
1. MySQLdb安装
(1)安装Mysql,参考上篇博客数据库之MySql。
(2)使用pip安装MySQLdb:pip install MySQL-python
但是安装的时候会报错:error: command 'C:\Program Files\Microsoft Visual Studio 14.0\VC\BIN\cl.exe' failed with exit status 2
下面推荐两种方法进行解决:
a. 下载Python-3.5及上版本扩展的mysql驱动:https://pypi.python.org/pypi/mysqlclient/1.3.10
之后将下载后的*.whl文件跟pip.exe放在同个目录(一般是在 ..Python36Scripts 里)
然后用cmd命令进入到这个目录执行PIP命令安装:pip install mysqlclient-1.3.10-cp36-cp36m-win32.whl
b. 安装pymysql代替:pip install pymysql
注:以上安装方法内容来自原文https://www.cnblogs.com/bu1tcat/p/8283742.html
2. MySQLdb实例
#coding=utf-8 import sys import MySQLdb as db import csv def parse_csv(csvfile): with open(csvfile, 'r') as pf: reader = csv.reader(pf, delimiter=',') header = next(reader) csvdata = [] for row in reader: csvdata.append(row) return header, csvdata #链接数据库 def mysqldb_operator(data): conn = db.connect(host="localhost", user="root", passwd="", db="xbqr", charset="utf8") print (conn) print ("datebase connect success!") curs = conn.cursor() #创建表之前先删除表 curs.execute("drop table IF EXISTS table_xbqr") conn.commit() #创建表 query = "create table table_xbqr( SupplierName VARCHAR(32), InvoiceNumber VARCHAR(32), PartNumber VARCHAR(32), Cost VARCHAR(32), PurchaseDate DATE)" curs.execute(query) conn.commit() for row in data: curs.execute("INSERT INTO table_xbqr VALUES(%s,%s,%s,%s,%s);", row) conn.commit() curs.execute("select * from table_xbqr") conn.commit() selectdata = curs.fetchall() print (selectdata) if __name__ == "__main__": csvfile = sys.argv[1] print ("csv file name:", csvfile) header, data = parse_csv(csvfile) print ("header:") print (header) print ("csvdata:") print (data) mysqldb_operator(data)