日常有项工作需要每周从数据库表导出成excel,下文将记录从安装读写excel的模块,到连接数据库导出成excel
安装python操作excel所需的module,包括xlrd、xlwt、xlutils三个module。由于测试环境机器无法连接外网,需在pypi网站找到python版本(2.7)对应的安装包,分别下载了setuptools 36.3.0,xlrd-1.2.0.tar.gz,xlwt-1.3.0.tar.gz,xlutils-2.0.0.tar.gz。
setuptools 36.3.0下载地址为:
https://files.pythonhosted.org/packages/6a/a7/e3af543c6dde4de7584536c868ac38570f58ae451f9201ff674532ea3809/setuptools-36.3.0.zip
xlrd-1.2.0.tar.gz下载地址为:https://files.pythonhosted.org/packages/aa/05/ec9d4fcbbb74bbf4da9f622b3b61aec541e4eccf31d3c60c5422ec027ce2/xlrd-1.2.0.tar.gz
xlwt-1.3.0.tar.gz下载地址为:
https://files.pythonhosted.org/packages/06/97/56a6f56ce44578a69343449aa5a0d98eefe04085d69da539f3034e2cd5c1/xlwt-1.3.0.tar.gz
xlutils-2.0.0.tar.gz下载地址为:
https://files.pythonhosted.org/packages/93/fe/af6d73e4bc7b0ce359d34bebb2e8d4d129763acfecd66a3a7efc587e54c9/xlutils-2.0.0.tar.gz
1、将下载文件xlrd-1.2.0.tar.gz,xlwt-1.3.0.tar.gz,xlutils-2.0.0.tar.gz并上传至服务器
2、解压安装xlrd
[root@vm4 python]# tar -zxvf xlrd-1.2.0.tar.gz
[root@vm4 python]# cd xlrd-1.2.0
[root@vm4 xlrd-1.2.0]# python setup.py install
3、解压安装xlwt
[root@vm4 python]# tar -zxvf xlwt-0.7.5.tar.gz
[root@vm4 python]# cd xlwt-0.7.5
[root@vm4 xlwt-0.7.5]# python setup.py install
4、解压安装xlutils
[root@vm4 python]# tar -zxvf xlutils-2.0.0.tar.gz
[root@vm4 python]# cd xlutils-2.0.0
[root@vm4 xlutils-2.0.0]# python setup.py install
连接oracle数据库,导出excel,需提前安装好cx_oracle module,示例代码如下:
import cx_Oracle, xlwt,os
def export_excel(table_name):
#connect oracle
db_conn=cx_Oracle.connect('root/password@localhost/newmbdb')
db_cursor=db_conn.cursor()
sql_cmd='SELECT trs_date FROM log'
db_cursor.execute(sql_cmd)
sql = 'select * from %s' % table_name
db_cursor.execute(sql) # 返回受影响的行数
fields = [field[0] for field in cur.description] # 获取所有字段名
all_data = cur.fetchall() # 所有数据
# 写入excel
book = xlwt.Workbook()
sheet = book.add_sheet('sheet1')
for col,field in enumerate(fields):
sheet.write(0,col,field)
row = 1
for data in all_data:
for col,field in enumerate(data):
sheet.write(row,col,field)
row += 1
book.save("%s.xls" % table_name)
if __name__ == '__main__':
#解决中文乱码问题
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
export_excel('test')