Python 2 do_POST http.server multipart/formdata 至 Python 3
Python 2 do_POST http.server multipart/formdata to Python 3
问题：尝试将讲师的 python 2 代码翻译成 python 3
具体问题：无法从 python 3
中的表单访问消息字段
Instructor's Code Snippet From Udacity Full-Stack Foundations Course
def do_POST(self):
try:
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
ctype, pdict = cgi.parse_header(
self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += " <h2> Okay, how about this: </h2>"
output += "<h1> %s </h1>" % messagecontent[0]
output += '''<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name="message" type="text" ><input type="submit" value="Submit"> </form>'''
output += "</body></html>"
self.wfile.write(output)
print output
except:
pass
在查阅了文档、github 存储库、Whosebug 帖子并花费了无数小时之后...我不知道如何在 python 3 中提取消息字段，例如 fields.get('message').
我的尝试
def do_POST(self):
try:
length = int(self.headers['Content-Length'])
print(self.headers['Content-Type'])
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
post_data = parse_qs(self.rfile.read(length).decode('utf-8'))
self.wfile.write("Lorem Ipsum".encode("utf-8"))
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent[0]
# You now have a dictionary of the post data
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
except:
print('Error!')
我的 post_data 变量是一个字典，但我找不到提取我在表单中输入的 'hi' 消息的方法。我也不确定这是否是从表单中提取数据的正确方法。
>>> post_data
{' name': ['"message"\r\n\r\nhi\r\n------WebKitFormBoundarygm0MsepKJXVrBubX--\r\n']}
我的解决方案
def do_POST(self):
try:
length = int(self.headers['Content-Length'])
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
post_data = parse_qs(self.rfile.read(length).decode('utf-8'))
messagecontent = post_data.get(' name')[0].split('\n')[2]
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
except:
pass
如果有更好的方法，我也很想知道！
不知道为什么我必须在 post_data.get(' name') 中的 'name' 之前添加一个 space。但是，嘿！有效！
更新：终于想通了
def do_POST(self):
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
ctype, pdict = cgi.parse_header(self.headers['Content-Type'])
if ctype == 'multipart/form-data':
pdict['boundary'] = bytes(pdict['boundary'], 'utf-8')
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')[0].decode('utf-8')
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
使用它来摆脱 Udacity 全栈基础课程！！
在 posting（2019 年）时，我无法使您的代码正常工作。
检查 cgi 模块，parse_multipart 试图访问 pdict['CONTENT-LENGHT']。
我的解决方案，工作@ post 时间：
def do_POST(self):
try:
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
# HEADERS are now in dict/json style container
ctype, pdict = cgi.parse_header(
self.headers.get('content-type'))
# boundary data needs to be encoded in a binary format
if ctype == 'multipart/form-data':
pdict['boundary'] = bytes(pdict['boundary'], "utf-8")
pdict['CONTENT-LENGTH'] = self.headers.get('content-length')
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += " <h2> Okay, how about this: </h2>"
# decode it back into a string rather than byte string(b'stuff')
output += "<h1> {} </h1>".format(messagecontent[0])
output += '''<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name="message" type="text" ><input type="submit" value="Submit"> </form>'''
output += "</body></html>"
self.wfile.write(output.encode())
print(output)
except:
raise
问题：尝试将讲师的 python 2 代码翻译成 python 3
具体问题：无法从 python 3
Instructor's Code Snippet From Udacity Full-Stack Foundations Course
def do_POST(self):
try:
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
ctype, pdict = cgi.parse_header(
self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += " <h2> Okay, how about this: </h2>"
output += "<h1> %s </h1>" % messagecontent[0]
output += '''<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name="message" type="text" ><input type="submit" value="Submit"> </form>'''
output += "</body></html>"
self.wfile.write(output)
print output
except:
pass
在查阅了文档、github 存储库、Whosebug 帖子并花费了无数小时之后...我不知道如何在 python 3 中提取消息字段，例如 fields.get('message').
我的尝试
def do_POST(self):
try:
length = int(self.headers['Content-Length'])
print(self.headers['Content-Type'])
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
post_data = parse_qs(self.rfile.read(length).decode('utf-8'))
self.wfile.write("Lorem Ipsum".encode("utf-8"))
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent[0]
# You now have a dictionary of the post data
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
except:
print('Error!')
我的 post_data 变量是一个字典，但我找不到提取我在表单中输入的 'hi' 消息的方法。我也不确定这是否是从表单中提取数据的正确方法。
>>> post_data
{' name': ['"message"\r\n\r\nhi\r\n------WebKitFormBoundarygm0MsepKJXVrBubX--\r\n']}
我的解决方案
def do_POST(self):
try:
length = int(self.headers['Content-Length'])
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
post_data = parse_qs(self.rfile.read(length).decode('utf-8'))
messagecontent = post_data.get(' name')[0].split('\n')[2]
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
except:
pass
如果有更好的方法，我也很想知道！
不知道为什么我必须在 post_data.get(' name') 中的 'name' 之前添加一个 space。但是，嘿！有效！
更新：终于想通了
def do_POST(self):
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
ctype, pdict = cgi.parse_header(self.headers['Content-Type'])
if ctype == 'multipart/form-data':
pdict['boundary'] = bytes(pdict['boundary'], 'utf-8')
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')[0].decode('utf-8')
output = ''
output += '<html><body>'
output += '<h2> Okay, how about this: </h2>'
output += '<h1> %s </h1>' % messagecontent
output += "<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name='message' type='text'><input type='submit' value='Submit'></form>"
output += '</html></body>'
self.wfile.write(output.encode('utf-8'))
使用它来摆脱 Udacity 全栈基础课程！！
在 posting（2019 年）时，我无法使您的代码正常工作。
检查 cgi 模块，parse_multipart 试图访问 pdict['CONTENT-LENGHT']。
我的解决方案，工作@ post 时间：
def do_POST(self):
try:
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.end_headers()
# HEADERS are now in dict/json style container
ctype, pdict = cgi.parse_header(
self.headers.get('content-type'))
# boundary data needs to be encoded in a binary format
if ctype == 'multipart/form-data':
pdict['boundary'] = bytes(pdict['boundary'], "utf-8")
pdict['CONTENT-LENGTH'] = self.headers.get('content-length')
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += " <h2> Okay, how about this: </h2>"
# decode it back into a string rather than byte string(b'stuff')
output += "<h1> {} </h1>".format(messagecontent[0])
output += '''<form method='POST' enctype='multipart/form-data' action='/hello'><h2>What would you like me to say?</h2><input name="message" type="text" ><input type="submit" value="Submit"> </form>'''
output += "</body></html>"
self.wfile.write(output.encode())
print(output)
except:
raise