curl(CommandLine Uniform Resource Locator),即在命令行中利用URL进行数据或者文件传输。
https://curl.haxx.se/
这是curl的官网。可以从上面的官网地址下载最新的curl版本。同时可以在官网看出curl支持的各种协议(如HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S等)、使用途径、curl的开发支持者、以及版本信息。想深入了解curl的伙伴们，可以去官网搜寻自己关注的信息。
本篇文章主要讲述在实际开发过程中，需要用到的常用命令以及其表达的含义。
通过curl -h我们可以获取到所有curl的命令以及其用法描述。
下面我么就对常用的几种命令做一个简单的描述。
1.curl url(获取该网址的文本信息)
curl www.zhujy.com
这就是获取的www.zhujy.com信息
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
2.curl -i url(获取该网址的文本信息以及协议头部信息)
curl -i www.zhujy.com
这就是获取的www.zhujy.com文本信息以及协议头部信息。
HTTP/1.1 200 OK
Server: nginx/1.14.0
Date: Mon, 11 Mar 2019 02:06:55 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Mon, 29 Oct 2018 09:52:22 GMT
Connection: keep-alive
ETag: "5bd6d856-264"
Accept-Ranges: bytes
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
3.curl -x proxy url(使用代理获取网页文本信息)
curl -x 47.94.151.148:80 zhujy.com.cn
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Test Page for the Nginx HTTP Server on Fedora</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style type="text/css">
/*<![CDATA[*/
body {
background-color: #fff;
color: #000;
font-size: 0.9em;
font-family: sans-serif,helvetica;
margin: 0;
padding: 0;
}
:link {
color: #c00;
}
:visited {
color: #c00;
}
a:hover {
color: #f50;
}
h1 {
text-align: center;
margin: 0;
padding: 0.6em 2em 0.4em;
background-color: #294172;
color: #fff;
font-weight: normal;
font-size: 1.75em;
border-bottom: 2px solid #000;
}
h1 strong {
font-weight: bold;
font-size: 1.5em;
}
h2 {
text-align: center;
background-color: #3C6EB4;
font-size: 1.1em;
font-weight: bold;
color: #fff;
margin: 0;
padding: 0.5em;
border-bottom: 2px solid #294172;
}
hr {
display: none;
}
.content {
padding: 1em 5em;
}
.alert {
border: 2px solid #000;
}
img {
border: 2px solid #fff;
padding: 2px;
margin: 2px;
}
a:hover img {
border: 2px solid #294172;
}
.logos {
margin: 1em;
text-align: center;
}
/*]]>*/
</style>
</head>
<body>
<h1>Welcome to <strong>nginx</strong> on Fedora!</h1>
<div class="content">
<p>This page is used to test the proper operation of the
<strong>nginx</strong> HTTP server after it has been
installed. If you can read this page, it means that the
web server installed at this site is working
properly.</p>
<div class="alert">
<h2>Website Administrator</h2>
<div class="content">
<p>This is the default <tt>index.html</tt> page that
is distributed with <strong>nginx</strong> on
Fedora. It is located in
<tt>/usr/share/nginx/html</tt>.</p>
<p>You should now put your content in a location of
your choice and edit the <tt>root</tt> configuration
directive in the <strong>nginx</strong>
configuration file
<tt>/etc/nginx/nginx.conf</tt>.</p>
</div>
</div>
<div class="logos">
<a href="http://nginx.net/"><img
src="nginx-logo.png"
alt="[ Powered by nginx ]"
width="121" height="32" /></a>
<a href="http://fedoraproject.org/"><img
src="poweredby.png"
alt="[ Powered by Fedora ]"
width="88" height="31" /></a>
</div>
</div>
</body>
</html>
4.curl -X POST --header"Content-Type:application/json" --data ‘{}’ url (使用post模拟json格式请求接口)
curl -X POST --header "Content-Type:application/json" --data '{}' 127.0.0.1:8088/user/getAllUserInfo
{"resultCode":"0","resultMsg":"成功","data":{"userList":[{"id":"a6fc8f27-e598-11e8-ba67-00163e14685b","name":"tom","age":"18","address":"北京1","stage":"NBA"},{"id":"24793d7c-e199-11e8-ba67-00163e14685b","name":"tom","age":"18","address":"北京3","stage":"NBA"},{"id":"247acf89-e599-11e8-ba67-00163e14685b","name":"jerry","age":"18","address":"深圳22","stage":"NBA"},{"id":"247cdafc-e599-11e8-ba67-00163e14685b","name":"james","age":"38","address":"广州d4","stage":"NBA"},{"id":"247ed96c-e599-11e8-ba67-00163e14685b","name":"curry","age":"58","address":"上海fv","stage":"NBA"},{"id":"24805b4e-e599-11e8-ba67-00163e14685b","name":"kaven","age":"78","address":"陇县","stage":"NBA"},{"id":"2481f851-e599-11e8-ba67-00163e14685b","name":"durant","age":"68","address":"富平","stage":"NBA"}]}}
1
POST 指定请求方式
–header 指定请求头部信息
–data 指定json请求体数据内容
5.curl -I url(仅返回请求头部信息)
curl -I www.zhujy.com.cn
HTTP/1.1 200 OK
Server: nginx/1.14.0
Date: Mon, 11 Mar 2019 03:34:29 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Mon, 29 Oct 2018 09:52:22 GMT
Connection: keep-alive
ETag: "5bd6d856-264"
Accept-Ranges: bytes
