Node.js生成HttpStatusCode辅助类发布到npm
作为一个好的RestfullApi不仅在于serviceurl的语义,可读性,幂等,正交，作为http状态码也很重要，一个好的HttpStatusCode给使用者一个很好的响应，比如200表示正常成功，201表示创建成功，409冲突，404资源不存在等等。所以在做一个基于node.js+mongodb+angularjs的demo时发现node.jsexpress没有提供相应的辅助类，但是本人不喜欢将201,404这类毫无语言层次语义的东西到处充斥着，所以最后决定自己写一个，但是同时本人也很懒，不喜欢做重复的苦力活，怎么办？那就从我最熟悉的c#中HttpStatusCode枚举中copy出来吧，最后为了简便在mac上所以采用了利用node.js去解析msdn关于httpstatuscode的文档生成node.js的辅助类。
代码很简单：
varhttp=require("http");
varfs=require("fs");
var$=require("jquery");
varoutput="httpStatusCode/index.js";
(function(){
String.format=function(){
vars=arguments[0];
for(vari=0;i<arguments.length-1;i++){
varreg=newRegExp("\\{"+i+"\\}","gm");
s=s.replace(reg,arguments[i+1]);
}
returns;
};
varoptions={
host:"msdn.microsoft.com",
port:80,
path:"/zh-cn/library/system.net.httpstatuscode.aspx"
};
http.get(options,function(response){
varhtml="";
response.on("data",function(chunk){
html+=chunk;
}).on("end",function(){
handler(html);
}).on("error",function(e){
console.log("Goterror:"+e.message);
});
functiongetHttpStatusCode(htmlString){
var$doc=$(html);
varrows=$doc.find("table#memberListtr:gt(0)");
varstatus={};
rows.each(function(i,row){
status[$(row).find("td:eq(1)").text()]=
parseInt($(row).find("td:eq(2)").text().match(/\d+/).toString());
});
returnstatus;
};
functiongenerateCode(status){
varcode="";
code+="exports.httpStatusCode="+JSON.stringify(status)+";";
returncode;
};
functionwriteFile(code){
fs.writeFile(output,code,function(err){
if(err){
console.log(err);
}else{
console.log("Thefilewassaved"+output+"!");
}
});
};
functionhandler(html){
varstatus=getHttpStatusCode(html);
varcode=generateCode(status);
writeFile(code);
};
});
})();
代码寄宿在github：https://github.com/greengerong/node-httpstatuscode
最终生成类为：
ViewCode
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
};
最后考虑到或许还有很多像我一样懒散的人，所以共享此代码发布到了npm，只需要npminstallhttpstatuscode，便可以简单实用，如下是一个测试demo：
懒人的文章总是代码多余文字，希望代码能说明一切，感谢各位能阅读。
varhttpStatusCode=require("httpstatuscode").httpStatusCode;
vartoBeEqual=function(actual,expected){
if(actual!==expected){
throw(actual+"notequal"+expected);
}
};
toBeEqual(httpStatusCode.OK,200);
toBeEqual(httpStatusCode.Created,201);
toBeEqual(httpStatusCode.BadRequest,400);
toBeEqual(httpStatusCode.InternalServerError,500);
console.log(httpStatusCode);
console.log("success");
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