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Node.js生成HttpStatusCode輔助類發(fā)布到npm

更新時(shí)間：2013年04月09日 09:42:05 作者：

本篇文章小編為大家介紹利用Node.js為Node.js生成HttpStatusCode輔助類并發(fā)布到npm，有需要的朋友可以參考一下

作為一個(gè)好的Restfull Api不僅在于service url的語(yǔ)義,可讀性,冪等,正交，作為http狀態(tài)碼也很重要，一個(gè)好的Http Status Code給使用者一個(gè)很好的響應(yīng)，比如200表示正常成功，201表示創(chuàng)建成功，409沖突，404資源不存在等等。所以在做一個(gè)基于node.js+mongodb+angularjs的demo時(shí)發(fā)現(xiàn)node.js express沒(méi)有提供相應(yīng)的輔助類，但是本人不喜歡將201,404這類毫無(wú)語(yǔ)言層次語(yǔ)義的東西到處充斥著，所以最后決定自己寫一個(gè)，但是同時(shí)本人也很懶，不喜歡做重復(fù)的苦力活，怎么辦？那就從我最熟悉的c#中HttpStatusCode枚舉中copy出來(lái)吧，最后為了簡(jiǎn)便在mac上所以采用了利用node.js去解析msdn關(guān)于httpstatuscode的文檔生成node.js的輔助類。

代碼很簡(jiǎn)單：

復(fù)制代碼代碼如下:

var http = require('http');

var fs = require('fs');

var $ = require('jquery');

var output = "httpStatusCode/index.js";

(function(){

String.format = function() {

var s = arguments[0];

for (var i = 0; i < arguments.length - 1; i++) {

var reg = new RegExp("\\{" + i + "\\}", "gm");

s = s.replace(reg, arguments[i + 1]);

}

return s;

};

var options = {

host:'msdn.microsoft.com',

port:80,

path:'/zh-cn/library/system.net.httpstatuscode.aspx'

};

http.get(options,function (response) {

var html = "";

response.on("data",function (chunk) {

html += chunk;

}).on("end", function () {

handler(html);

}).on('error', function (e) {

console.log("Got error: " + e.message);

});

function getHttpStatusCode(htmlString) {

var $doc = $(html);

var rows = $doc.find("table#memberList tr:gt(0)");

var status = {};

rows.each(function(i,row){

status[$(row).find("td:eq(1)").text()] = 

parseInt($(row).find("td:eq(2)").text().match(/\d+/).toString());

});

return status;

};

function generateCode(status){

var code = "";

code += "exports.httpStatusCode = " + JSON.stringify(status) + ";";

return code;

};

function writeFile(code){

fs.writeFile(output, code, function(err) {

if(err) {

console.log(err);

} else {

console.log("The file was saved " + output + "!");

}

}); 

};

function handler(html){

var status = getHttpStatusCode(html);

var code = generateCode(status);

writeFile(code);

};

});

})();

代碼寄宿在github：https://github.com/greengerong/node-httpstatuscode

最終生成類為：

復(fù)制代碼代碼如下:

View Code 
exports.httpStatusCode = { 
"Continue": 100, 
"SwitchingProtocols": 101, 
"OK": 200, 
"Created": 201, 
"Accepted": 202, 
"NonAuthoritativeInformation": 203, 
"NoContent": 204, 
"ResetContent": 205, 
"PartialContent": 206, 
"MultipleChoices": 300, 
"Ambiguous": 300, 
"MovedPermanently": 301, 
"Moved": 301, 
"Found": 302, 
"Redirect": 302, 
"SeeOther": 303, 
"RedirectMethod": 303, 
"NotModified": 304, 
"UseProxy": 305, 
"Unused": 306, 
"TemporaryRedirect": 307, 
"RedirectKeepVerb": 307, 
"BadRequest": 400, 
"Unauthorized": 401, 
"PaymentRequired": 402, 
"Forbidden": 403, 
"NotFound": 404, 
"MethodNotAllowed": 405, 
"NotAcceptable": 406, 
"ProxyAuthenticationRequired": 407, 
"RequestTimeout": 408, 
"Conflict": 409, 
"Gone": 410, 
"LengthRequired": 411, 
"PreconditionFailed": 412, 
"RequestEntityTooLarge": 413, 
"RequestUriTooLong": 414, 
"UnsupportedMediaType": 415, 
"RequestedRangeNotSatisfiable": 416, 
"ExpectationFailed": 417, 
"UpgradeRequired": 426, 
"InternalServerError": 500, 
"NotImplemented": 501, 
"BadGateway": 502, 
"ServiceUnavailable": 503, 
"GatewayTimeout": 504, 
"HttpVersionNotSupported": 505 
}; 

最后考慮到或許還有很多像我一樣懶散的人，所以共享此代碼發(fā)布到了npm，只需要npm install httpstatuscode，便可以簡(jiǎn)單實(shí)用，如下是一個(gè)測(cè)試demo：

復(fù)制代碼代碼如下:

var httpStatusCode = require("httpstatuscode").httpStatusCode;

var toBeEqual = function (actual,expected){

if(actual !== expected){

throw (actual + " not equal " + expected);

}

};

toBeEqual(httpStatusCode.OK,200);

toBeEqual(httpStatusCode.Created,201);

toBeEqual(httpStatusCode.BadRequest,400);

toBeEqual(httpStatusCode.InternalServerError,500);

console.log(httpStatusCode);

console.log("success");