flutter与python怎样结合？

flutter可以通过以下的方式实现结合：网页请求，网页内容解析，集合数据和保存数据库，

1、#!/usr/bin/python

# coding=utf-8

import platform

from selenium import webdriver

class BaseRequest:

def get_web_content(self, url):

#chromedriver = "C:Program Files (x86)GoogleChromeApplicationchromedriver.exe"

chromedriver = "/Users/zxl/Downloads/chromedriver"

sysstr = platform.system()

if sysstr == 'Darwin':

chromedriver = "/Users/zxl/Downloads/chromedriver"

elif sysstr == 'Windows':

chromedriver = "D:\my_github_workspace\chromedriver.exe"

elif sysstr == 'Linux':

chromedriver = "/Users/zxl/Downloads/chromedriver"

# 创建chrome参数对象

opt = webdriver.ChromeOptions()

# 把chrome设置成无界面模式，不论windows还是linux都可以，自动适配对应参数

opt.set_headless()

prefs = {"profile.managed_default_content_settings.images": 2}

opt.add_experimental_option("prefs", prefs)

# 创建chrome无界面对象

driver = webdriver.Chrome(executable_path=chromedriver, options=opt)

driver.get(url)

return driver

2、#!/usr/bin/python

# coding=utf-8

import datetime

import hashlib

import re

from selenium.common.exceptions import NoSuchElementException

from selenium.webdriver.common.by import By

from selenium.webdriver.support.wait import WebDriverWait

from selenium.webdriver.support import expected_conditions

from com_zxl_spider_db.JokeDB import JokeDB

from com_zxl_spider_request.BaseRequest import *

from com_zxl_spider_data.JokeBean import *

class RequestQsbkTxt(BaseRequest):

def __init__(self):

global jokeDB

jokeDB = JokeDB()

def parse(self, end_url, index):

print "parse::end_url = ", end_url, "::index = ", index

driver = self.get_web_content("https://www.qiushibaike.com/" + end_url + str(index))

elem1 = WebDriverWait(driver, 10).until(

expected_conditions.presence_of_element_located((By.XPATH, '//ul[@]')))

print "elem1 = ", elem1

elem2 = WebDriverWait(driver, 10).until(

expected_conditions.presence_of_element_located((By.XPATH, '//div[@]')))

print "elem2 = ", elem2

# page_source = driver.page_source

isFindNextPage = False

paginationObject = driver.find_element_by_xpath('//ul[@]')

pageListObject = paginationObject.find_elements_by_xpath('.//li')

for pageItemObject in pageListObject:

page_index_txt = pageItemObject.text

print "pageItemObject::page_index_txt = ", page_index_txt

itemFindResult = re.findall(".*?(d+).*?", page_index_txt)

print "pageItemObject::itemFindResult = ", itemFindResult

if len(itemFindResult) > 0:

if int(itemFindResult[0]) > index:

index = int(itemFindResult[0])

isFindNextPage = True

break

# if index - int(itemFindResult[0]) == 1:

# index = int(itemFindResult[0])

# isFindNextPage = True

# break

print "parse::isFindNextPage = ", isFindNextPage, "::index = ", index, "::end_url = ",

hotPicJokeItemPath = '//div[@]'

hotPicJokeItems = driver.find_elements_by_xpath(hotPicJokeItemPath)

print 'hotPicJokeItems length = ', len(hotPicJokeItems)

for hotPicJokeItem in hotPicJokeItems:

jokeId = hotPicJokeItem.get_attribute('id')

md5Object = hashlib.md5()

md5Object.update(jokeId.encode('utf-8'))

jokeMd5Value = md5Object.hexdigest()

authorObject = hotPicJokeItem.find_element_by_xpath('.//div[@]')

authorNickObject = authorObject.find_element_by_xpath('.//h2')

authorNickName = authorNickObject.text

authorImgObject = authorObject.find_element_by_xpath('.//img')

authorImgUrl = authorImgObject.get_attribute('src')

authorGender = ''

authorAge = -1

try:

authorGenderObject = authorObject.find_element_by_xpath(".//div[starts-with(@class,'articleGender')]")

authorGender = authorGenderObject.get_attribute('class')

authorAge = authorGenderObject.text

except NoSuchElementException as e:

print e

contentObject = hotPicJokeItem.find_element_by_xpath('.//div[@]')

content = contentObject.text

thumbImgUrl = ''

try:

thumbObject = hotPicJokeItem.find_element_by_xpath('.//div[@]')

thumbImgObject = thumbObject.find_element_by_xpath('.//img')

thumbImgUrl = thumbImgObject.get_attribute('src')

except NoSuchElementException as e:

print e

statsVoteContent = ''

statsCommentContent = ''

statsCommentDetailUrl = ''

try:

statsObject = hotPicJokeItem.find_element_by_xpath('.//div[@]')

try:

statsVoteObject = statsObject.find_element_by_xpath('.//span[@]')

statsVoteContent = statsVoteObject.text

except NoSuchElementException as e:

print e

try:

statsCommentObject = statsObject.find_element_by_xpath('.//span[@]')

statsCommentContent = statsCommentObject.find_element_by_xpath(

'.//a[@]').text

statsCommentDetailUrl = statsCommentObject.find_element_by_xpath(

'.//a[@]').get_attribute('href')

except NoSuchElementException as e:

print e

except NoSuchElementException as e:

print e

# print authorNickName

# print authorGender

# print authorAge

# print authorImgUrl

# print content

# print thumbImgUrl

# print statsVoteContent

# print statsCommentContent

# print statsCommentDetailUrl

# print jokeId

# print jokeMd5Value

# print 'n'

# print '======================================end=========================================='

# print 'n'

joke_bean = JokeBean()

joke_bean = joke_bean.create_joke_bean(

authorNickName.encode('utf-8'),

authorGender,

authorAge,

authorImgUrl,

content.encode('utf-8'),

thumbImgUrl,

statsVoteContent,

statsCommentContent,

statsCommentDetailUrl,

jokeMd5Value)

isExistJokeItem = jokeDB.query_by_md5(jokeMd5Value)

print isExistJokeItem

if isExistJokeItem is None:

print "not ExistJokeItem"

jokeDB.insert_joke(joke_bean)

else:

print "ExistJokeItem"

driver.close()

return

print "==============end================="

print "n"

driver.close()

if not isFindNextPage:

return

else:

self.parse(end_url, index)

def clas_db(self):

if jokeDB is not None:

jokeDB.close_db()

def start_task(self):

print "start_task::", 'Now Time::', datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')

self.parse("pic/page/", 1)

self.clas_db()

if __name__ == "__main__":

request = RequestQsbkTxt()

# request.parse("pic/page/", 1)

request.parse("pic/page/", 1)

request.clas_db()

3、#!/usr/bin/python

# coding=utf-8

class JokeBean:

def create_joke_bean(self,

author_nick_name,

author_gender,

author_age,

author_img_url,

content,

thumb_img_url,

stats_vote_content,

stats_comment_content,

stats_comment_detail_url,

md5):

bean = {'author_nick_name': author_nick_name,

'author_gender': author_gender,

'author_age': author_age,

'author_img_url': author_img_url,

'content': content,

'thumb_img_url': thumb_img_url,

'stats_vote_content': stats_vote_content,

'stats_comment_content': stats_comment_content,

'stats_comment_detail_url': stats_comment_detail_url,

'md5': md5}

return bean。

参数