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Node.js產生HttpStatusCode輔助類別發佈到npm_基礎知識

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May 16, 2016 pm 05:37 PM

node.js

作為一個好的Restfull Api不僅在於service url的語意,可讀性,冪等,正交，作為http狀態碼也很重要，一個好的Http Status Code給使用者一個很好的回應，例如200表示正常成功，201表示創建成功，409衝突，404資源不存在等等。所以在做一個基於node.js mongodb angularjs的demo時發現node.js express沒有提供相應的輔助類，但是本人不喜歡將201,404這類毫無語言層次語義的東西到處充斥著，所以最後決定自己寫一個，但是同時本人也很懶，不喜歡做重複的苦力活，怎麼辦？那就從我最熟悉的c#中HttpStatusCode枚舉中copy出來吧，最後為了簡單在mac上所以採用了利用node.js去解析msdn關於httpstatuscode的文檔生成node.js的輔助類別。

程式碼很簡單：

複製代碼代碼如下:

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 
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(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 = " J🎜>
code = "exports.httpStatusCode = " J🎜 ";";

return code;

};

function writeFile(code){

.writef , code, function(err) {

if(err) {

console.log(err);

} else {

console.log🎜>} else {

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

}

});

};

function handler(html){

var status = getHttpStatusCode(html);

var code = generateCode(status);

var code = generateCode(status);

writeFile( 
};

});

})();

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

最終生成類別為：

複製程式碼

 程式碼如下:

View Code 
exports. >"Continue": 100, 
"SwitchingProtocols": 101, 
"OK": 200, 
"Created": 201, 
"Accepted": 202, "Nonon🎜: 203, 
"NoContent": 204, 
"ResetContent": 205, 
"PartialContent": 206, 
"MultipleChoices": 300, 
"Ambiguous" "MovedPermanently": 301, 
"Moved": 301, 
"Found": 302, 
"Redirect": 302, 
"SeeOther": 303, 
"Redirect3" , 
"NotModified": 304, 
"UseProxy": 305, 
"Unused": 306,

"TemporaryRedirect": 307, "RedirectKeepVerb: 303" BadRequest": 400,

"Unauthorized": 401,

"PaymentRequired": 402,

"Forbidden": 403,

"NotFound": 404, " "NotAcceptable": 406, "ProxyAuthenticationRequired": 407, "RequestTimeout": 408, "Conflict": 409, "Gthus: 410" ": 411, "PreconditionFailed": 412, "RequestEntityTooLarge": 413,

"RequestUriTooLong": 414, "UnportedMediaType": 415" 🎜>"ExpectationFailed": 417, "UpgradeRequired": 426, "InternalServerError": 500, "NotImplemented": 501, "BadGatemented": 501, "BadGatemented" : 503, "GatewayTimeout": 504, "HttpVersionNotSupported": 505 }; 最後考慮到或許還有很多像我一樣懶散的人，所以共享此程式碼發佈到了npm，只需要npm install httpstatuscode，便可以簡單實用，如下是一個測試demo：複製程式碼程式碼如下:

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

var toBeEqual = function (actual,expected){

if(actualtion (actual,expected){

if(actual !== expected){

throw (actual " not equal " expected);

}

};

toBeEqual(httpStatusCode.OK,200); >toBeEqual(httpStatusCode.Created,201);

toBeEqual(httpStatusCode.BadRequest,400);

toBeEqual(httpStatusCode.InternalServerE>,5000); 🎜>
console.log(httpStatusCode);

console.log("success");

懶人的文章總是代碼多餘文字，希望代碼能說明一切，感謝各位能閱讀。