想做个GUI爬虫，有个按钮，输入框。刚运行输入框无网页链接，按钮没按，就读取Entry控件，用在requsts的get中，报错。错误信息：Traceback(mostrecentcalllast):File"C:/Users/Lenovo...

想做个GUI爬虫，有个按钮，输入框。刚运行输入框无网页链接，按钮没按，就读取Entry控件，用在requsts的get中，报错。错误信息：Traceback (most recent call last): File "C:/Users/Lenovo/Desktop/a.py", line 17, in button=Button(root,text="下载",font="微软雅黑",command=downlaod_song()) File "C:/Users/Lenovo/Desktop/a.py", line 6, in downlaod_song res=resq.get(ur) File "E:\python3.7.5\lib\site-packages\requests\api.py", line 75, in get return request('get', url, params=params, **kwargs) File "E:\python3.7.5\lib\site-packages\requests\api.py", line 60, in request return session.request(method=method, url=url, **kwargs) File "E:\python3.7.5\lib\site-packages\requests\sessions.py", line 510, in request prep = self.prepare_request(req) File "E:\python3.7.5\lib\site-packages\requests\sessions.py", line 453, in prepare_request hooks=merge_hooks(request.hooks, self.hooks), File "E:\python3.7.5\lib\site-packages\requests\models.py", line 313, in prepare self.prepare_url(url, params) File "E:\python3.7.5\lib\site-packages\requests\models.py", line 387, in prepare_url raise MissingSchema(error)requests.exceptions.MissingSchema: Invalid URL '': No schema supplied. Perhaps you meant http://?

源码可能看不清：

from tkinter import *

import requests as resq

abc=0

def downlaod_song():

ur=entry.get()

res=resq.get(ur)

root=Tk()

root.title('网易云音乐爬虫')

root.geometry("430x250+400+200")

label = Label(root,text="输入要爬取的URL:",font=('宋体',15))

label.grid()

entry=Entry(root,font=("微软雅黑",15))

entry.grid(row=0,column=1)

li=Listbox(root,font=('微软雅黑',10))

li.grid(row=1,column=0)

button=Button(root,text="下载",font="微软雅黑",command=downlaod_song())

button.grid(row=1,column=1)

root.mainloop()

展开