-
Notifications
You must be signed in to change notification settings - Fork 67
/
server.js
128 lines (117 loc) · 4.55 KB
/
server.js
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
"use strict";
//加载所需要的模块
var http = require('http');
var url = require('url');
var fs = require('fs');
var path = require('path');
var cp = require('child_process');
//创建服务
var httpServer = http.createServer(processRequest);
var port = 80;
//指定一个监听的接口
httpServer.listen(port, function() {
console.log(`app is running at port:${port}`);
console.log(`url: http://localhost:${port}`);
cp.exec(`explorer http://localhost:${port}`, function () {
});
});
//响应请求的函数
function processRequest (request, response) {
//mime类型
var mime = {
"css": "text/css",
"gif": "image/gif",
"html": "text/html",
"ico": "image/x-icon",
"jpeg": "image/jpeg",
"jpg": "image/jpeg",
"js": "text/javascript",
"json": "application/json",
"pdf": "application/pdf",
"png": "image/png",
"svg": "image/svg+xml",
"swf": "application/x-shockwave-flash",
"tiff": "image/tiff",
"txt": "text/plain",
"wav": "audio/x-wav",
"wma": "audio/x-ms-wma",
"wmv": "video/x-ms-wmv",
"xml": "text/xml"
};
//request里面切出标识符字符串
var requestUrl = request.url;
//url模块的parse方法 接受一个字符串，返回一个url对象,切出来路径
var pathName = url.parse(requestUrl).pathname;
//对路径解码，防止中文乱码
var pathName = decodeURI(pathName);
//解决301重定向问题，如果pathname没以/结尾，并且没有扩展名
// if (!pathName.endsWith('/') && path.extname(pathName) === '') {
// pathName += '/';
// var redirect = "http://" + request.headers.host + pathName;
// response.writeHead(301, {
// location: redirect
// });
// //response.end方法用来回应完成后关闭本次对话，也可以写入HTTP回应的具体内容。
// response.end();
// }
//获取资源文件的绝对路径
var filePath = path.resolve(__dirname + pathName);
console.log(filePath);
//获取对应文件的文档类型
//我们通过path.extname来获取文件的后缀名。由于extname返回值包含”.”，所以通过slice方法来剔除掉”.”，
//对于没有后缀名的文件，我们一律认为是unknown。
var ext = path.extname(pathName);
ext = ext ? ext.slice(1) : 'unknown';
//未知的类型一律用"text/plain"类型
var contentType = mime[ext] || "text/plain";
fs.stat(filePath, (err, stats) => {
if (err) {
response.writeHead(404, { "content-type": "text/html" });
response.end("<h1>404 Not Found</h1>");
}
//没出错 并且文件存在
if (!err && stats.isFile()) {
readFile(filePath, contentType);
}
//如果路径是目录
if (!err && stats.isDirectory()) {
var html = "<head><meta charset = 'utf-8'/></head><body><ul>";
//读取该路径下文件
fs.readdir(filePath, (err, files) => {
if (err) {
console.log("读取路径失败！");
} else {
//做成一个链接表，方便用户访问
var flag = false;
for (var file of files) {
//如果在目录下找到index.html，直接读取这个文件
if (file === "index.html") {
readFile(filePath + (filePath[filePath.length-1]=='/' ? '' : '/') + 'index.html', "text/html");
flag = true;
break;
};
html += `<li><a href='${file}'>${file}</a></li>`;
}
if(!flag) {
html += '</ul></body>';
response.writeHead(200, { "content-type": "text/html" });
response.end(html);
}
}
});
}
//读取文件的函数
function readFile(filePath, contentType){
response.writeHead(200, { "content-type": contentType });
//建立流对象，读文件
var stream = fs.createReadStream(filePath);
//错误处理
stream.on('error', function() {
response.writeHead(500, { "content-type": contentType });
response.end("<h1>500 Server Error</h1>");
});
//读取文件
stream.pipe(response);
}
});
}