Question

我正在尝试为Flask创建一个本地HTTP服务器。

服务器启动成功但当我尝试在网络浏览器中运行 localhost：5000 时出现此错误

class webserverhandler(BaseHTTPRequestHandler):

def do_GET(self):
    try:
        if self.path.endswith("/"):
            self.send_response(200)
            self.send_header('Content-Type','text/html')
            self.end_headers()

            output=""
            output+="<html><body>Hello</body></html>"

            self.wfile.write(output)
            print (output)
            return

    except IOError:
        self.send_error(404,"File Not Found %s" % self.path)


def main():
try:
    port=5000
    server=HTTPServer(('',port),webserverhandler)
    print ("webserver running on %s" % port)
    server.serve_forever()


except KeyboardInterrupt:
    server.socket.close()

---------------------------------- ERROR ------------ -----------------------------

webserver running on 5000
127.0.0.1 - - [11/Feb/2017 17:59:36] "GET / HTTP/1.1" 200 -
Exception happened during processing of request from ('127.0.0.1', 54027)
Traceback (most recent call last):
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 317, in _handle_request_noblock
 self.process_request(request, client_address)
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 348, in process_request
 self.finish_request(request, client_address)
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
 self.RequestHandlerClass(request, client_address, self)
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
 self.handle()
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\http\server.py", line 418, in handle
 self.handle_one_request()
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\http\server.py", line 406, in handle_one_request
method()
File "webserver.py", line 14, in do_GET
 self.wfile.write(output)
File "C:\Users\Jordan\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
 self._sock.sendall(b)
TypeError: a bytes-like object is required, not 'str'

任何人都可以帮助我吗？

Answer 1

您可以将SELECT SUM(price), SUM(price_old), GROUP_CONCAT(link), shop FROM wp_all_import WHERE pid = 8385 GROUP BY shop变量编码为output，如下所示：

bytes_object

Answer 2

您似乎正在使用Python3，默认情况下字符串文字是unicode（str）对象。使用b - 前缀

output = b""
output += b"<html><body>Hello</body></html>"

创建一个bytes - 对象。

类似字节的对象不是'str'

2 个答案: