scrapy 数据存储到mysql和mongodb

pipelines.py

将数据存储到mysql数据库中

import pymysql
class HuVPipeline(object):
    def process_item(self, item, spider):
        #连接数据库，
        conn = pymysql.connect(host='localhost', user='root', password='******', port=3306, db='mysql')
        #获取游标
        cusor = conn.cursor()
        #获取数据
        title=item['title']
        username=item['username']
        yijuhua=item['yijuhua']
        otherStyleTime=item['otherStyleTime']
        #sql语句
        sql = """INSERT INTO hux VALUES (%s, %s, %s, %s)"""
        #这里是元组数据，(str,str,str,str)
        cusor.execute(sql, (title, username, yijuhua, otherStyleTime))
        cusor.close()
        conn.commit()
        # 关闭数据库连接
        conn.close()
        return item

更简单便捷的方式

import pymysql

class YiqingPipeline(object):
    def process_item(self, item, spider):
        # 连接数据库，
        conn = pymysql.connect(host='localhost', user='root', password='******', port=3306, db='db55')
        # # 获取游标
        cusor = conn.cursor()
        # sql语句
        sql = """insert into umetrip_risk (province,city,area,street,risk,updatetime,parsetime) values ("%(province)s","%(city)s","%(area)s","%(street)s","%(risk)s","%(updatetime)s","%(parsetime)s") ON DUPLICATE KEY UPDATE street="%(street)s",risk="%(risk)s", updatetime="%(updatetime)s",parsetime="%(parsetime)s";"""
        cusor.execute(sql % item)
        cusor.close()
        conn.commit()
        # 关闭数据库连接
        conn.close()
        return item

　　

进入D:mongoin目录下输入以下命令

mongod --dbpath D:mongodatadb

将数据存放到mongodb数据库中

无密码连接

import pymongo
class HuVPipeline(object):
    def __init__(self):
        self.client=pymongo.MongoClient()#链接Mongodb数据库
        self.db=self.client['huxiuv3']#新建数据库
    def process_item(self, item, spider):
        self.db['hu_1'].insert(dict(item))#第一种方法  #将数据存放到插入到表中
        return item

　　

import pymysql
class HuVPipeline(object):
def process_item(self, item, spider):
#连接数据库，
conn = pymysql.connect(host='localhost', user='root', password='123456', port=3306, db='mysql')
        #获取游标
cusor = conn.cursor()
        #获取数据
title=item['title']
        username=item['username']
        yijuhua=item['yijuhua']
        otherStyleTime=item['otherStyleTime']
        #sql语句
sql = """INSERT INTO hux VALUES (%s, %s, %s, %s)"""
#这里是元组数据，(str,str,str,str)
cusor.execute(sql, (title, username, yijuhua, otherStyleTime))
        cusor.close()
        conn.commit()
        # 关闭数据库连接
conn.close()
        return item