之前寫過關於 Jint 的文章可以參考這一篇 試著用 C# 透過 Jint 執行
Javascript ，混和執行
今天 主要是來說 Jint 模擬做到 XMLHttpRequest (XHR) 的效果，為何要這樣做，簡單的就是人做專案身不由己
簡單的來說一下邏輯，基本上就是利用可以混和執行的特性，自己先去封裝 RestSharp ，之後再讓
Jint 來達到這個效果
其實說穿了大概就是這樣，因為我之前有簡單封裝了一個版本這邊就不贅述，直接上 code.
1. 先 nuget RestSharp(160.12) ，因為後面 170
好像有改版，我程式是之前寫的，好像 170 會有點語法上不一樣，等有時間我再來補坑
當然還有 Jint
2. 加入程式碼 RestSharpJintAgent.cs
<![CDATA[
public class RestSharpJintAgent
{
public class RestSharpAgentSendResult
{
public string Code { get; set; }
public string Result { get; set; }
public string Message { get; set; }
public string Status { get; set; }
}
public class RestSharpAgentDetail
{
public RestSharp.RestClient Client;
public RestSharp.RestRequest Request;
public RestSharpAgentDetail AddContent(dynamic src)
{
if (Client == null) return this;
if (Request == null) return this;
Request.AddJsonBody(src);
return this;
}
public RestSharpAgentDetail AddQS(string key, string value)
{
if (Client == null) return this;
if (Request == null) return this;
Request.AddParameter(key, value, ParameterType.QueryString);
return this;
}
public RestSharpAgentDetail AddHeader(string key, string value)
{
if (Client == null) return this;
if (Request == null) return this;
if (string.IsNullOrEmpty(key)) return this;
Request.AddOrUpdateHeader(key, value);
return this;
}
public RestSharpAgentSendResult Send()
{
var res = new RestSharpAgentSendResult { Message = "Client is Null", Status = "ERROR" };
if (Client == null)
{
return res;
}
try
{
var result = Client.ExecuteAsync(Request).Result;
res.Code = ((int)(result.StatusCode)).ToString();
res.Status = "SUCCESS";
res.Message = "";
res.Result = result.Content;
return res;
}
catch (Exception ex)
{
res.Status = "ERROR";
res.Message = ex.StackTrace + "," + ex.Message;
return res;
}
}
}
public class RestSharpAgent4
{
public static RestSharpAgentDetail GetAgent(string baseUrl, string resource, string method)
{
var res = new RestSharpAgentDetail();
res.Client = new RestSharp.RestClient(baseUrl);
res.Request = new RestSharp.RestRequest();
var req = new RestSharp.RestRequest();
if (method.ToUpper() == "POST")
{
res.Request.Method = RestSharp.Method.POST;
}
if (method.ToUpper() == "GET")
{
res.Request.Method = RestSharp.Method.GET;
}
if (method.ToUpper() == "PUT")
{
res.Request.Method = RestSharp.Method.PUT;
}
if (method.ToUpper() == "DELETE")
{
res.Request.Method = RestSharp.Method.DELETE;
}
res.Request.Resource = resource;
res.Request.RequestFormat = RestSharp.DataFormat.Json;
return res;
}
}
}
]]>
3. 這邊我測試的是 postman 的 echo 機器
GET: https://postman-echo.com/get?A=當麻許&B=3.1415926
Result:
<![CDATA[
{"args":{"A":"當麻許","B":"3.1415926"},"headers":
{"x-forwarded-proto":"https","x-forwarded-port":"443",
"host":"postman-echo.com",
"x-amzn-trace-id":"Root=1-62144f0a-630ee3c662ec62d753219a0e",
"sec-ch-ua":"\" Not A;Brand\";v=\"99\", \"Chromium\";v=\"98\", \"Google Chrome\";v=\"98\"",
"sec-ch-ua-mobile":"?0","sec-ch-ua-platform":"\"Windows\"",
"upgrade-insecure-requests":"1",
"user-agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
"accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
"sec-fetch-site":"none",
"sec-fetch-mode":"navigate",
"sec-fetch-user":"?1","sec-fetch-dest":"document","accept-encoding":"gzip, deflate, br",
"accept-language":"zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7",
"cookie":"sails.sid=s%3AoaRFpwLIY1rtu3e5NuUOJ0qh1noQfVXb.Lovie0%2FB2l6%2F%2B6tWBztevTXQIYsdHZB%2BZze5v10yf4k"}
,"url":"https://postman-echo.com/get?A=%E7%95%B6%E9%BA%BB%E8%A8%B1&B=3.1415926"}
]]>
POST:
curl --location --request POST 'https://postman-echo.com/post'
\
--form 'A="當麻許"' \
--form 'B=3.1415926'
Result:
<![CDATA[
{"args":{"A":"許當麻","B":"3.14"},
"data":"\"\"","files":{},
"form":{},
"headers":{"x-forwarded-proto":"https",
"x-forwarded-port":"443",
"host":"postman-echo.com",
"x-amzn-trace-id":"Root=1-6214505c-2ef95dfa20a02ceb0cbcdce8",
"content-length":"2","auth":"",
"accept":"application/json, text/json, text/x-json, text/javascript, application/xml, text/xml",
"user-agent":"RestSharp/106.15.0.0","accept-encoding":"gzip, deflate","content-type":"application/json"},
"json":null,"url":"https://postman-echo.com/post?A=%E8%A8%B1%E7%95%B6%E9%BA%BB&B=3.14"}
]]>
4.再來就是 Jint 呼叫的部分，這邊我封裝叫做 WebClient 畢竟我就是很古典 :P
<![CDATA[
var engine = new Jint.Engine();
engine.SetValue("WebClient", new RestSharpJintAgent.RestSharpAgent4());
var jsCode = @"
function Main(){
var obj=new Object();
obj.A='許當麻';
obj.B=123.456;
//https://postman-echo.com/get?foo1=bar1&foo2=bar2
//Get :
// var res = WebClient.GetAgent('https://postman-echo.com', 'get', 'get')
var res = WebClient.GetAgent('https://postman-echo.com', 'post', 'post')
.AddHeader('AUTH', '')
.AddContent('')
.AddQS('A','許當麻').AddQS('B',3.1415926).Send();
if (res.Status == 'SUCCESS')
{
if (res.Code == '200')
{
//return res.Result;
var result=JSON.parse(res.Result);
return result.args.A+', '+ result.args.B;
// result : 當麻許,3.1415926
}
}
}
";
engine.Execute(jsCode);
var result = engine.Execute("Main()").GetCompletionValue();
Console.WriteLine(result);
]]>
如果不符合需要的可能需要再自行改寫了
reference:
https://documenter.getpostman.com/view/5025623/SWTG5aqV
