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我不明白为什么如果我启动它，在 github 中填写注册表并点击“注册”发布数据是 {}。我正在使用 python 3.7、cefpython 66.0 代码：

import tkinter as tk
from tkinter import messagebox
from cefpython3 import cefpython as cef
#import cefpython3
import threading
import sys
import time
import webbrowser

def on_browse(browser,frame,request,user_gesture,is_redirect):
    if user_gesture == True:
        print('user_gesture:',user_gesture)
        print('GetFirstPartyForCookies:',request.GetFirstPartyForCookies())
        print('GetFlags',request.GetFlags())
        print('GetHeaderMap',request.GetHeaderMap())
        print('GetHeaderMultimap',request.GetHeaderMultimap())
        print('GetMethod',request.GetMethod())
        print('GetPostData',request.GetPostData())
        print('GetUrl',request.GetUrl())



def test_thread(frame):
    global browser
    sys.excepthook = cef.ExceptHook
    window_info = cef.WindowInfo(frame.winfo_id())
    window_info.SetAsChild(frame.winfo_id(), rect)
    cef.Initialize()
    browser = cef.CreateBrowserSync(window_info, url='http://www.github.com')
    browser.SetClientCallback('OnBeforeBrowse',on_browse)
    cef.MessageLoop()

def on_closing():
    print('closing')
    r.destroy()

r = tk.Tk()
r.geometry('800x600')
r.protocol('WM_DELETE_WINDOW', on_closing)
frame = tk.Frame(r, bg='blue', height=400)
frame2 = tk.Frame(r, bg='white', height=200)
frame.pack(side='top', fill='x')
frame2.pack(side='top', fill='x')
r.update()

tk.Button(frame2, text='Exit', command=on_closing).pack(side='left')
tk.Button(frame2, text='Show something',
          command=lambda: messagebox.showinfo('TITLE', 'Shown something')).pack(side='right')

rect = [0, 0, frame.winfo_width(), frame.winfo_height()]
print('browser: ', rect[2], 'x', rect[3])

thread = threading.Thread(target=test_thread, args=(frame,))
thread.start()

r.mainloop()

这就是我填写表单填写的表格 输出的方式：

browser:  800 x 400
user_gesture: True
GetFirstPartyForCookies: 
GetFlags 0
GetHeaderMap {}
GetHeaderMultimap []
GetMethod POST
GetPostData {}
GetUrl https://github.com/join
closing
>>>

我期待在 GetPostData 中找到一些东西。感谢所有会帮助我的人！

****更新****建议我尝试使用官方cefpython tkinter示例。我添加了

self.browser.SetClientCallback('OnBeforeResourceLoad',self.on_browse)

在类 browserFrame 中定义 embed_browser。然后我在“def embed_browser”之前添加这个函数

def on_browse(self, browser,frame,request):
        user_gesture  = True
        if user_gesture == True:
            print('user_gesture:',user_gesture)
            print('GetFirstPartyForCookies:',request.GetFirstPartyForCookies())
            print('GetFlags',request.GetFlags())
            print('GetHeaderMap',request.GetHeaderMap())
            print('GetHeaderMultimap',request.GetHeaderMultimap())
            print('GetMethod',request.GetMethod())
            print('GetPostData',request.GetPostData())
            print('GetUrl',request.GetUrl())

我得到了这个输出：

user_gesture: True
GetFirstPartyForCookies: https://github.com/join
GetFlags 0
GetHeaderMap {'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8', 'Content-Type': 'application/x-www-form-urlencoded', 'Origin': 'https://github.com', 'Upgrade-Insecure-Requests': '1', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36'}
GetHeaderMultimap [('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8'), ('Content-Type', 'application/x-www-form-urlencoded'), ('Origin', 'https://github.com'), ('Upgrade-Insecure-Requests', '1'), ('User-Agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36')]
GetMethod POST
[CEF Python] ExceptHook: catched exception, will shutdown CEF

Traceback (most recent call last):
  File "request_handler.pyx", line 117, in cefpython_py37.RequestHandler_OnBeforeResourceLoad
  File "C:\Users\*****\Desktop\tkinter_.py", line 166, in on_browse
    print('GetPostData',request.GetPostData())
  File "request.pyx", line 83, in cefpython_py37.PyRequest.GetPostData
  File "request.pyx", line 122, in cefpython_py37.PyRequest.GetPostData
  File "C:\Python37\lib\urllib\parse.py", line 740, in parse_qsl
    value = _coerce_result(value)
  File "C:\Python37\lib\urllib\parse.py", line 103, in _encode_result
    return obj.encode(encoding, errors)
UnicodeEncodeError: 'ascii' codec can't encode character '\u2713' in position 0: ordinal not in range(128)
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