-
Notifications
You must be signed in to change notification settings - Fork 2
/
node-note1.html
183 lines (160 loc) · 8.19 KB
/
node-note1.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta http-equiv="Cache-Control" content="no-siteapp">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=1, minimum-scale=1, maximum-scale=1">
<meta name="referrer" content="never">
<meta name="robots" content="index,follow">
<link rel="shortcut icon" href="/favicon.png?v=198964">
<link rel="apple-itouch-icon" href="/favicon.png?v=198964">
<link href="/bundle/index.min.css" rel="stylesheet">
<link href="https://fonts.loli.net/css?family=Merriweather:300,700,700italic,300italic|Open+Sans:700,400" rel="stylesheet">
<link href="https://cdn.staticfile.org/prism/1.16.0/themes/prism.min.css" rel="stylesheet">
<link href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<script>
function ensureDate(e){return"object"!=typeof e&&(e=new Date(e)),e}function dateFormat(e,t){void 0===t&&(t=e,e=ensureDate());let n={M:(e=ensureDate(e)).getMonth()+1,d:e.getDate(),h:e.getHours(),m:e.getMinutes(),s:e.getSeconds(),q:Math.floor((e.getMonth()+3)/3),S:e.getMilliseconds()},r=new RegExp("([yMdhmsqS])+","g");return t=t.replace(r,function(t,r){let u=n[r];if(void 0!==u)return t.length>1&&(u=(u="0"+u).substring(u.length-2)),u;if("y"===r){return(e.getFullYear()+"").substring(4-t.length)}return t})}
</script>
<meta name="keywords" content="node.js学习笔记(1) - Express,Node,Express,">
<meta name="description" content="node.js学习笔记(1) - Express,Node,Express,">
<meta name="author" content="江矿先森.">
<title>node.js学习笔记(1) - Express</title>
<link href="/bundle/iconfont.css" rel="stylesheet">
<link href="/bundle/reward.css" rel="stylesheet">
<script src='/bundle/av.min.js'></script>
<script src='/bundle/valine.min.js'></script>
</head>
<body>
<article class="container">
<header class="header-wrap asset">
<nav class="main-nav">
<ul class="menu vertical naive">
<li class="menu-item"><a href="/">Home</a></li>
<li class="menu-item"><a href="/archive.html">Archive</a></li>
<li class="menu-item"><a href="/tag.html">Tag</a></li>
<li class="menu-item"><a href="/atom.xml">RSS</a></li>
</ul>
</nav>
<div class="bgs" style="background-image: url(https://s11.ax1x.com/2024/02/04/pFlmAII.jpg);"></div>
<div class="vertical">
<div class="header-wrap-content inner">
<h3 class="title">Stay before every beautiful thoughts.</h3>
<h3 class="subtitle">Just be nice, always think twice!</h3>
</div>
</div>
</header>
<article class="main article">
<h1 class="title">node.js学习笔记(1) - Express</h1>
<section class="info">
<span class="avatar" style="background-image: url(https://s11.ax1x.com/2024/02/04/pFlmVit.jpg);"></span> <a class="name" href="javascript:;">江矿先森.</a>
<span class="date"><script>document.write(dateFormat( 1524306234 *1000, 'yyyy-MM-dd'))</script></span>
<span class="tags"><a class="tages" href="/tag/Node/index.html">Node</a><a class="tages" href="/tag/Express/index.html">Express</a></span>
</section>
<article class="content"><h2>Buffer</h2>
<p>Buffer 支持的编码格式：”ascii”, “utf8”, “utf16le”, “ucs2”, “base64” 和 “hex”。（默认是utf-8）</p>
<p>写入缓冲区的方法：write（string,offeset,length,encoding);</p>
<p>参数解释：</p>
<ul>
<li>string：写入的字符串值</li>
<li>offeset：写入的位置，默认为 0，可以不填</li>
<li>length：写入长度，默认为 str.length, 可以不填</li>
<li>encoding：编码格式，默认为 utf-8 可以不填</li>
</ul>
<p>从缓冲区读取数据方法：buf.toString(encoding,start,end);
参数均可不填，有默认值，与 write 保持一致。</p>
<h2>Express</h2>
<p>框架核心特性：</p>
<ul>
<li>可以设置中间件来响应 HTTP 请求。</li>
<li>定义了路由表用于执行不同的 HTTP 请求动作。</li>
<li>可以通过向模板传递参数来动态渲染 HTML 页面。</li>
</ul>
<p>请求和响应：</p>
<pre><code class="language-js">//get
app.get('/', (req, res) => {
// ...
})
//post
app.post('/', (req, res) => {
// ...
})
</code></pre>
<ul>
<li>Request 常见属性：</li>
</ul>
<pre><code class="language-js">req.app：当callback为外部文件时，用来访问express的实例
req.baseUrl：获取路由当前安装的URL路径
req.body / req.cookies：获得「请求主体」/ Cookies
req.fresh / req.stale：判断请求是否还「新鲜」
req.hostname / req.ip：获取主机名和IP地址
req.originalUrl：获取原始请求URL
req.params：获取路由的parameters
req.path：获取请求路径
req.protocol：获取协议类型
req.query：获取URL的查询参数串
req.route：获取当前匹配的路由
req.subdomains：获取子域名
req.accpets()：检查请求的Accept头的请求类型
req.acceptsCharsets / req.acceptsEncodings / req.acceptsLanguages
req.get()：获取指定的HTTP请求头
req.is()：判断请求头Content-Type的MIME类型
</code></pre>
<ul>
<li>Response 常见属性：</li>
</ul>
<pre><code class="language-js">res.app：同req.app一样
res.append()：追加指定HTTP头
res.set()在res.append()：后将重置之前设置的头
res.cookie(name,value,[option])：设置Cookie=> opition: domain,expires,httpOnly,maxAge,path,secure,signed
res.clearCookie()：清除Cookie
res.download()：传送指定路径的文件
res.get()：返回指定的HTTP头
res.json()：传送JSON响应
res.jsonp()：传送JSONP响应
res.location()：只设置响应的Location HTTP头，不设置状态码或者close response
res.redirect()：设置响应的Location HTTP头，并且设置状态码302
res.send()：传送HTTP响应
res.sendFile(path,[options],[fn])：传送指定路径的文件 -会自动根据文件extension设定Content-Type
res.set()：设置HTTP头，传入object可以一次设置多个头
res.status()：设置HTTP状态码
res.type()：设置Content-Type的MIME类型
</code></pre>
</article>
<section class="author">
<div class="avatar" style="background-image: url(https://s11.ax1x.com/2024/02/04/pFlmVit.jpg);"></div>
<a class="name" href="javascript:;">江矿先森.</a>
<div class="intro">前(台)端(菜), 喜欢瞎折腾新技术. 乜野都识少少, 先可以扮代表:p</div>
</section>
<section class="social">
<a href="https://github.com/joname1" target="_blank">
<i class="iconfont i-github"></i>
</a>
<a href="javascript:alert('你电脑中了不知名的病毒, 并抛出了警告 atob(“d3hJZDogZXJyb3IuZXJyb3I=”)')" target="_blank">
<i class="iconfont i-wechat"></i>
</a>
<a href="https://www.zhihu.com/topic/19550901" target="_blank">
<i class="iconfont i-zhihu"></i>
</a>
<a href="javascript:alert('对方不想跟你讲话, 并向你扔来一段乱码 atob(“ZXJyb3JAZXJyb3IuZXJyb3I=”)')" target="_blank">
<i class="iconfont i-email"></i>
</a>
</section>
<div id="comment"></div>
</article>
</article>
<footer class="footer clearfix">
<span class="copyright">
<script>
document.write(new Date().getFullYear());
</script> <i class="fa fa-copyright"></i> Made with <i class="fa fa-heart"></i> using <joname />
<span id="runtime_span"></span>
</span>
</footer>
<script src="/bundle/index.min.js"></script>
<script src="https://cdn.staticfile.org/prism/1.16.0/prism.min.js"></script>
<script>
new Valine({el: '#comment',appId: 'PieJ3iHvVTJ9C5yBudK6sxaT-MdYXbMMI',appKey: 'Yt25unM4vc9wzBvC2lL20Frc',placeholder: 'ヾﾉ≧∀≦)o来啊, 快活啊, 反正有大把时光!!',path: window.location.pathname,avatar: 'retro',pageSize: 10,guest_info: ['nick', 'mail'],lang: 'en'});
</script>
</body>
</html>