实例一：
先来个简单的实例，把下面的代码保存为main.js，让自己欣喜下：
var http = require("http"); function onRequest(request, response){ console.log("Request received."); var str='{"id":"0036",name:"jack",arg:123}'; response.writeHead(200,{"Content-Type":'text/plain','charset':'utf-8','Access-Control-Allow-Origin':'*','Access-Control-Allow-Methods':'PUT,POST,GET,DELETE,OPTIONS'}); //response.writeHead(200,{"Content-Type":'application/json','Access-Control-Allow-Origin':'*','Access-Control-Allow-Methods':'PUT,POST,GET,DELETE,OPTIONS'}); //response.write("Hello World 8888\n"); response.write(str); response.end(); } http.createServer(onRequest).listen(8888); console.log("Server has started.port on 8888"); |
运行方式是在命令行中，直接输入：node main.js，然后打开IE浏览器输入http://127.0.0.1:8888，就可以到熟悉的内容了。
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实例二：
通过读去json文件，发送json数据到浏览器，把下面的代码保存为json.js，
var http = require("http"); var fs = require("fs"); var str='{"id":"123",name:"jack",arg:11111}'; function onRequest(request, response){ console.log("Request received."); response.writeHead(200,{"Content-Type":'text/plain','charset':'utf-8','Access-Control-Allow-Origin':'*','Access-Control-Allow-Methods':'PUT,POST,GET,DELETE,OPTIONS'});//可以解决跨域的请求 //response.writeHead(200,{"Content-Type":'application/json', 'Access-Control-Allow-Origin':'*','Access-Control-Allow-Methods':'PUT,POST,GET,DELETE,OPTIONS'}); //response.write("Hello World 8888\n"); str=fs.readFileSync('data.txt'); response.write(str); response.end(); } http.createServer(onRequest).listen(8888); console.log("Server has started.port on 8888\n"); console.log("test data: "+str.toString()); |
然后再相同目录下保存一个data.txt文件，内容为：
{"id":"0036",name:"jack",arg:32100,
remark:"test data"}
运行方式是在命令行中，直接输入：node json.js，然后打开IE浏览器输入http://127.0.0.1:8888，就可以到熟悉的内容了。
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实例三：
读写ini文件，首先使用ini文件库，代码如下，保存为ini.js文件
var eol = process.platform === "win32" ? "\r\n" : "\n" function INI() { this.sections = {}; } /** * 删除Section * @param sectionName */ INI.prototype.removeSection = function (sectionName) { sectionName = sectionName.replace(/\[/g,'('); sectionName = sectionName.replace(/]/g,')'); if (this.sections[sectionName]) { delete this.sections[sectionName]; } } /** * 创建或者得到某个Section * @type {Function} */ INI.prototype.getOrCreateSection = INI.prototype.section = function (sectionName) { sectionName = sectionName.replace(/\[/g,'('); sectionName = sectionName.replace(/]/g,')'); if (!this.sections[sectionName]) { this.sections[sectionName] = {}; } return this.sections[sectionName] } /** * 将INI转换成文本 * * @returns {string} */ INI.prototype.encodeToIni = INI.prototype.toString = function encodeIni() { var _INI = this; var sectionOut = _INI.encodeSection(null, _INI); Object.keys(_INI.sections).forEach(function (k, _, __) { if (_INI.sections) { sectionOut += _INI.encodeSection(k, _INI.sections[k]) } }); return sectionOut; } /** * * @param section * @param obj * @returns {string} */ INI.prototype.encodeSection = function (section, obj) { var out = ""; Object.keys(obj).forEach(function (k, _, __) { var val = obj[k]; if(k=="___comment")return; if (val && Array.isArray(val)) { val.forEach(function (item) { out += safe(k + "[]") + " = " + safe(item) + "\n" }) } else if (val && typeof val === "object") { } else { out += safe(k) + " = " + safe(val) + eol } }) if (section && out.length) { out = "[" + safe(section) + "]" + eol + out } if (section || obj.___comment){ out = obj.___comment + eol + out; } return out+"\n"; } function safe(val) { return (typeof val !== "string" || val.match(/[\r\n]/) || val.match(/^\[/) || (val.length > 1 && val.charAt(0) === "\"" && val.slice(-1) === "\"") || val !== val.trim()) ? JSON.stringify(val) : val.replace(/;/g, '\\;') } var regex1 = { section: /^\s*\[\s*([^\]]*)\s*\]\s*$/, param: /^\s*([\w\.\-\_\@]+)\s*=\s*(.*?)\s*$/, comment: /^\s*;.*$/ }; var regex = { section: /^\s*\[\s*([^\]]*)\s*\]\s*$/, param: /^\s*([\w\.\-\_\@]+)\s*=\s*(.*?)\s*$/, comment: /^\s*[;#].*$/ }; /** * @param data * @returns {INI} */ exports.parse = function (data) { var value = new INI(); var lines = data.split(/\r\n|\r|\n/); var section = null; var comm = null; lines.forEach(function (line) { if (regex.comment.test(line)) { var match = line.match(regex.comment); comm = match[0]; return; } else if (regex.param.test(line)) { var match = line.match(regex.param); if (section) { section[match[1]] = match[2]; if(comm)section[match[1]].___comment=comm; } else { value[match[1]] = match[2]; if(comm)value.___comment =comm; } comm = null; } else if (regex.section.test(line)) { var match = line.match(regex.section); section = value.getOrCreateSection(match[1]); if(comm)section.___comment=comm; comm = null; } else if (line.length == 0 && section) { section = null; comm = null; } ; }); return value; } /** * 创建INI * @type {Function} */ exports.createINI = exports.create = function () { return new INI(); }; var fs = require('fs'); exports.loadFileSync =function(fileName/*,charset*/){ return exports.parse(fs.readFileSync(fileName, "utf-8")) ; } |
