☰

如何使用 cURL 显示 POST 数据？

tag-icon • tag-icon curl debug
如何使用 cURL 显示 POST 数据？

举例来说，使用 -v 参数向 Web 服务器发送 POST 消息：

curl -v http://testserver.com/post -d "firstname=john&lastname=doe"

输出

> POST /post HTTP/1.1
> User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.19.7 OpenSSL/0.9.8l zlib/1.2.3
> Host: testserver.com
> Accept: */*
> Content-Length: 28
> Content-Type: application/x-www-form-urlencoded
> 
< HTTP/1.1 200 OK
(etc)

没有提及我发布的数据。

cURL 中是否有一个选项可以在输出中显示字符串“firstname=john&lastname=doe”？

注意：显然我想要的字符串在我执行的命令中，但还有其他几个发布选项，如--form和--data-ascii等。我想看到发送到服务器的原始数据。

答案1

我不使用时最接近的方法tcpdump是使用以下--trace-ascii选项：

~ curl http://w3.org/ -d "hello=there" --trace-ascii /dev/stdout
== Info: About to connect() to w3.org port 80 (#0)
== Info:   Trying 128.30.52.45... == Info: connected
== Info: Connected to w3.org (128.30.52.45) port 80 (#0)
=> Send header, 210 bytes (0xd2)
0000: POST / HTTP/1.1
0011: User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.1
0051: 9.7 OpenSSL/0.9.8l zlib/1.2.3
0070: Host: w3.org
007e: Accept: */*
008b: Content-Length: 11
009f: Content-Type: application/x-www-form-urlencoded
00d0: 
=> Send data, 11 bytes (0xb)
0000: hello=there

不幸的是，当您发布时这不起作用multipart/form-data：

~ curl http://w3.org/ -F hello=there -F testing=123 --trace-ascii /dev/stdout
== Info: About to connect() to w3.org port 80 (#0)
== Info:   Trying 128.30.52.45... == Info: connected
== Info: Connected to w3.org (128.30.52.45) port 80 (#0)
=> Send header, 270 bytes (0x10e)
0000: POST / HTTP/1.1
0011: User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.1
0051: 9.7 OpenSSL/0.9.8l zlib/1.2.3
0070: Host: w3.org
007e: Accept: */*
008b: Content-Length: 244
00a0: Expect: 100-continue
00b6: Content-Type: multipart/form-data; boundary=--------------------
00f6: --------19319e4d1b79
010c: 
<= Recv header, 32 bytes (0x20)
0000: HTTP/1.1 301 Moved Permanently

答案2

或者你可以测试https://httpbin.org/

$ curl https://httpbin.org/post -d "firstname=john&lastname=doe"
{
  "args": {}, 
  "data": "", 
  "files": {}, 
  "form": {
    "firstname": "john", 
    "lastname": "doe"
  }, 
  "headers": {
    "Accept": "*/*", 
    "Content-Length": "27", 
    "Content-Type": "application/x-www-form-urlencoded", 
    "Host": "httpbin.org", 
    "User-Agent": "curl/7.43.0"
  }, 
  "json": null, 
  "origin": "*.*.*.*", 
  "url": "https://httpbin.org/post"
}

答案3

想要添加 netcat 替代品

#!/bin/bash
nc -l 8080 &

curl "http://localhost:8080" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
--data @- <<EOF
{
  "me": "$USER",
  "something": $(date +%s)
}
EOF

答案4

你可以使用查尔斯和curl --proxy localhost:8888. 简单！

相关内容