7、监测数据采集物联网应用开发步骤(5.3)

1. 监测数据采集物联网应用开发步骤(5.2)

静态配置库数据库调用，新建全局变量初始化类com.zxy.main.Init_Page.py

#! python3
# -*- coding: utf-8 -
'''
Created on 2017年05月10日
@author: zxyong 13738196011
'''

from com.zxy.z_debug import z_debug
from com.zxy.common.DbConfigSelf import DbConfigSelf

#监测数据采集物联网应用--全局变量初始化
class Init_Page(z_debug):

    def __init__(self):
        pass
            
    @staticmethod
    def Init_Load():
        DbConfigSelf.GetDbConfigSelfNew()
        Pass

数据库操作测试MonitorDataCmd.py主文件中编写：

from com.zxy.main.Init_Page import Init_Page
from com.zxy.db_Self.Db_Common_Self import Db_Common_Self

if __name__ == '__main__':下编写

        #全局变量初始化
        Init_Page.Init_Load()
        
        #测试案例
        temDbSelf = Db_Common_Self()
        #创建数据库表 t_db_config表
        strSql = "select count(1) from t_db_config limit 1"
        temValue = temDbSelf.Common_Sql(strSql)
        if temValue == None:
            if Com_Para.driverClassName == "org.sqlite.JDBC":
                strSql = "CREATE TABLE t_db_config ("
                strSql = strSql+"MAIN_ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"
                strSql = strSql+"DB_CN_NAME VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_DriverClassName VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_url VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_username VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_password VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_version VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"DB_Code VARCHAR (500) DEFAULT NULL,"
                strSql = strSql+"S_DESC             VARCHAR (2000) DEFAULT NULL,"
                strSql = strSql+"CREATE_DATE        datetime NOT NULL DEFAULT (datetime('now')))"
                temDbSelf.CommonExec_Sql(strSql)
                print("创建数据库表 t_db_config表成功")
                
        #插入数据记录
        strSql = "insert into t_db_config(DB_CN_NAME,DB_DriverClassName,DB_url,DB_username,DB_password,DB_version,DB_Code) "
        strSql = strSql + " values('测试数据1','测试数据2','测试数据3','测试数据4','测试数据5','测试数据6','测试数据7')"
        temDbSelf.CommonExec_Sql(strSql)
        print("插入数据记录成功")
        
        #读取数据记录
        strSql = "select * from t_db_config limit 2"
        temRs = temDbSelf.Common_Sql(strSql)
        print(str(temRs))

程序执行成功结果:自动生成center_data.db

打印出数据库数据

小测试：把上文的sql语句故意语法写错执行看看log日志里出现什么变化。

com.zxy.db1和com.zxy.db2的编写参考com.zxy.db_Self,后续功能代码中会使用。

监测数据采集物联网应用开发步骤(6)