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2017-08-16
View Web SourceCrul is a command-line tool that sends a network request and then gets and extracts data that is displayed in the
"Standard output" (stdout) above.
| 1 | $ Curl Baidu.com |
| 123 | <html> <meta http-equiv="Refresh" content="0;url=http://www.baidu.com/" > </html> |
If you want to save this page, you can use -o or --output parameters, which is equivalent to using wget
The order.
| 1 | $ Curl-o file_name baidu.com |
Some URLs are automatically redirected. Use -L or --location parameters, curl jumps to the new URL.
| 1 | $ curl-l baidu.com |
-ior --include the parameter can display the header information of the HTTP response, along with the page code.-Ior --head parameter is the header information that displays only the HTTP response .
| 1 | $ curl-i baidu.com |
| 123456789101112131415 | http/1.1 okdate:wed, 08:21:49 gmtserver:apachelast-modified:tue, 13:48:00 gmtetag: 51-47CF 7e6ee8400 "Accept-ranges:bytescontent-length:81cache-control:max-age=86400expires:thu, 2017 08:21:49 Gmtconnection:keep-alivecontent-type:text/html <html><meta http-equiv= "Refresh" content="0;url=http://www.baidu.com/" > </html> |
-vor --verbose parameter can display the entire process of an HTTP communication, including port connections and
HTTP request header information.
| 1 | $ curl-v baidu.com |
| 123456789101112131415161718192021222324 | * Rebuilt URL to:baidu.com/* Trying 220.181.57.217...* Connected to Baidu.com (220.181.57.217) port (#0) > Get/htt P/1.1> host:baidu.com> user-agent:curl/7.43.0> Accept: */*>< http/1.1 OK < date:wed, 08:24:49 GMT< Server: Apache < Last-modified:tue, Jan 13:48:00 GMT< ETag: "51-47cf7e6ee8400" < Accept-ranges:bytes< content-length: bayi < cache-control:max-age=86400< Expires: Thu, 08:24:49 GMT < connection:keep-alive< content-type: text/html <<html> <meta http-equiv="Refresh" content="0;url=http://www.baidu.com/" > </html> * Connection #0 to host baidu.com left intact |
--trace --trace-ascii A more detailed communication process can also be viewed through or by command, after execution by developing
View of the log address
| 12 | $ Curl--trace ${log_path} baidu.com$ curl--trace-ascii ${log_path} baidu.com |
The default HTTP verb for curl is get, which uses -X parameters to support other verbs.
| 1 | $ curl-x POST baidu.com |
| 12 | # Use-H or--header can play this role $ curl localhost:8002/test-h "Content-type:application/json" |
| 123456789 | # get method is relatively simple, url followed directly with parameters $ curl localhost:8002/ Test?data=xxx # Post method implemented with--data or-D parameters $ curl-x post Localhost:8002/test--data " name=xxx "--data " password=xxx " $ curl-x POST localhost:8002/test-h content-type:application/ X-www-form-urlencoded "-D " Name=win " # Submit JSON data using Application/json $ curl-x POST localhost:8002/test-h Content-type:application/json "-D #如果你的数据没有经过表单编码, you can also let curl encode you, the parameter is '--data-urlencode '. $ curl-x POST localhost:8002/test--data-urlencode "Data=1 2" |
| 12 | $ curl--form [email protected] localhost:8002/test$ curl--form "[Email Protected];type=text/plain" localhost:8002/Test |
Need to add request header information Referer where to jump from
| 1 | $ Curl localhost:8002/test--referer ${from_url} |
Use --user-agent or -A can simulate sending user-agent fields
| 1 | $ Curl localhost:8002/test--user-agent "Device" |
| 123456 | # Sent cookies can be seen in response headers $ curl localhost:8002/test--cookie "Name=ss"#-C Can save the cookies returned by the server to the file $ curl localhost:8002/test-c ${cookie_file}#-B can use this file as cookie information, make subsequent requests. $ curl localhost:8002/test-b ${cookie_file} |
Some domains require HTTP authentication, and CURL needs to use --user or -u parameters.
| 12 | # This time the server receives the authorization field in the header message, the value of basic + name:pass Base64 encrypted value $ curl localhost:8002/Test--user Name: APSS |
Network Request Tool CURL
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