你應該閱讀JSON數據是這樣的:
#!/usr/bin/env python3
import os
import sys
import json
content_len = int(os.environ["CONTENT_LENGTH"])
req_body = sys.stdin.read(content_len)
my_dict = json.loads(req_body)
用下面的代碼,你可以遇到問題:
myjson = json.load(sys.stdin)
或者少寫簡潔:
requ_body = sys.stdin.read()
my_dict = json.load(requ_body)
那確實爲我工作,當我的cgi腳本在apache
服務器上時,但你不能指望一般的工作 - 就像我發現cgi腳本在另一臺服務器上時一樣。按照CGI規範:
RFC 3875 CGI Version 1.1 October 2004
4.2. Request Message-Body
Request data is accessed by the script in a system-defined method;
unless defined otherwise, this will be by reading the 'standard
input' file descriptor or file handle.
Request-Data = [ request-body ] [ extension-data ]
request-body = <CONTENT_LENGTH>OCTET
extension-data = *OCTET
A request-body is supplied with the request if the CONTENT_LENGTH is
not NULL. The server MUST make at least that many bytes available
for the script to read. The server MAY signal an end-of-file
condition after CONTENT_LENGTH bytes have been read or it MAY supply
extension data. Therefore, the script MUST NOT attempt to read more
than CONTENT_LENGTH bytes, even if more data is available. However,
it is not obliged to read any of the data.
重點線是:
腳本不能試圖瞭解更多 比CONTENT_LENGTH字節,即使更多的數據是可用的。
顯然,apache
請求正文發送到CGI腳本,這會導致sys.stdin.read()
返回之後立即發送一個EOF信號給CGI腳本。但根據cgi規範,服務器不需要在請求正文後發送eof信號,並且我發現我的cgi腳本掛在sys.stdin.read()
上 - 當我的腳本位於另一個服務器上時,最終導致超時錯誤。
因此,爲了在JSON數據在一般情況下閱讀,你應該這樣做:
content_len = int(os.environ["CONTENT_LENGTH"])
req_body = sys.stdin.read(content_len)
my_dict = json.loads(req_body)
服務器設置了CGI腳本,其中包含頭信息,一堆的環境變量,其中一個是CONTENT_LENGTH。
這是一個失敗的捲曲請求是什麼樣子,當我用myjson = json.load(sys.stdin)
:
-v verbose output
-H specify one header
--data implicitly specifies a POST request
Note that curl automatically calculates a Content-Length header
for you.
~$ curl -v \
> -H 'Content-Type: application/json' \
> --data '{"a": 1, "b": 2}' \
> http://localhost:65451/cgi-bin/1.py
* Trying ::1...
* TCP_NODELAY set
* Connection failed
* connect to ::1 port 65451 failed: Connection refused
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 65451 (#0)
> POST /cgi-bin/1.py HTTP/1.1
> Host: localhost:65451
> User-Agent: curl/7.58.0
> Accept: */*
> Content-Type: application/json
> Content-Length: 16
>
* upload completely sent off: 16 out of 16 bytes
=== hung here for about 5 seconds ====
< HTTP/1.1 504 Gateway Time-out
< Date: Thu, 08 Mar 2018 17:53:30 GMT
< Content-Type: text/html
< Server: inets/6.4.5
* no chunk, no close, no size. Assume close to signal end
<
* Closing connection 0
據推測,沒有任何反應?請告訴我們你看到的問題。 –
您是否發佈了百分比編碼的JSON或JSON字符串? – SuperSaiyan
我只是想要它,所以它顯示我發佈的內容,所以我有一個想法,它實際上工作。目前回復「空」 – TheMonkeyMan