python连接mongodb操作数据示例(mongodb数据库配置类)

一、相关代码数据库配置类 mongodbconn.py

代码如下:

#encoding=utf-8”’mongo conn连接类”’import pymongoclass dbconn: conn = none servers = “mongodb://localhost:27017” def connect(self): self.conn = pymongo.connection(self.servers) def close(self): return self.conn.disconnect() def getconn(self): return self.conn

mongodemo.py 类

代码如下:

#encoding=utf-8”’mongo操作demodone:”’import mongodbconndbconn = mongodbconn.dbconn()conn = nonelifeba_users = nonedef process(): #建立连接 dbconn.connect() global conn conn = dbconn.getconn() #列出server_info信息 print conn.server_info() #列出全部数据库 databases = conn.database_names() print databases #删除库和表 droptable() #添加数据库lifeba及表(collections)users createtable() #插入数据 insertdatas() #更新数据 updatedata() #查询数据 querydata() #删除数据 deletedata() #释放连接 dbconn.close()def insertdatas(): datas=[{“name”:”steven1″,”realname”:”测试1″,”age”:25}, {“name”:”steven2″,”realname”:”测试2″,”age”:26}, {“name”:”steven1″,”realname”:”测试3″,”age”:23}] lifeba_users.insert(datas)def updatedata(): ”’只修改最后一条匹配到的数据 第3个参数设置为true,没找到该数据就添加一条 第4个参数设置为true,有多条记录就不更新 ”’ lifeba_users.update({‘name’:’steven1′},{‘$set’:{‘realname’:’测试1修改’}}, false,false)def deletedata(): lifeba_users.remove({‘name’:’steven1′})def querydata(): #查询全部数据 rows = lifeba_users.find() printresult(rows) #查询一个数据 print lifeba_users.find_one() #带条件查询 printresult(lifeba_users.find({‘name’:’steven2′})) printresult(lifeba_users.find({‘name’:{‘$gt’:25}}))def createtable(): ”’创建库和表”’ global lifeba_users lifeba_users = conn.lifeba.usersdef droptable(): ”’删除表”’ global conn conn.drop_database(“lifeba”)def printresult(rows): for row in rows: for key in row.keys():#遍历字典 print row[key], #加, 不换行打印 print ”if __name__ == ‘__main__’: process()

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