怎么使用selenium.chrome实现扩展拦截或转发请求功能(chrome,selenium,开发技术)

Selenium.WebDriver

Selenium WebDriver 是一组开源 API，用于自动测试 Web 应用程序，利用它可以通过代码来控制chrome浏览器！

有时候我们需要mock接口的返回，或者拦截和转发请求，今天就来实现这个功能

nuget

OpenQA.Selenium.Chrome.Fiddler

开始coding

我们新创建一个功能：OpenQA.Selenium.Chrome.Fiddler

一个chrome扩展 最起码有2个文件

manifest.json

background.js

稍微解释一下：

manifest.json 是来描述chrome扩展的

{"version":"1.0.0","manifest_version":2,"name":"ChromeFiddler","permissions":["proxy","tabs","unlimitedStorage","storage","<all_urls>","webRequest","webRequestBlocking"],"background":{"scripts":["background.js"]},"minimum_chrome_version":"22.0.0"}

background.js 是逻辑处理模块

因为拦截api 或者 转发 需要用的chrome的api

chrome.webRequest.onBeforeRequest.addListener(function(details){//逻辑处理},{urls:['<all_urls>']},['blocking','extraHeaders','requestBody']);

这个api的函数 接收的details参数

• details.url 是api的接口

函数的返回

• {cancel:true} 拦截请求

• {redirectUrl:''} 转发到指定url

写selenium.chrome插件

• 新建一个netstand工程，然后引用

Selenium.WebDriver

复制以下代码

///<summary>///AddFiddlerextention///</summary>///<paramname="options">Chromeoptions</param>///<paramname="fiddlerOption">Proxyhost</param>publicstaticvoidAddFiddler(thisChromeOptionsoptions,FiddlerOptionfiddlerOption){varbackgroundProxyJs=ReplaceTemplates(background_js,fiddlerOption);if(!Directory.Exists("Plugins"))Directory.CreateDirectory("Plugins");varguid=Guid.NewGuid().ToString();varmanifestPath=$"Plugins/manifest_{guid}.json";varbackgroundPath=$"Plugins/background_{guid}.js";vararchiveFilePath=$"Plugins/proxy_auth_plugin_{guid}.zip";File.WriteAllText(manifestPath,manifest_json);File.WriteAllText(backgroundPath,backgroundProxyJs);using(varzip=ZipFile.Open(archiveFilePath,ZipArchiveMode.Create)){zip.CreateEntryFromFile(manifestPath,"manifest.json");zip.CreateEntryFromFile(backgroundPath,"background.js");}File.Delete(manifestPath);File.Delete(backgroundPath);options.AddExtension(archiveFilePath);}privatestaticstringReplaceTemplates(stringstr,FiddlerOptionfiddlerOption){if(fiddlerOption.OnBeforeRequestOptions!=null){varbeforeConfigs=Newtonsoft.Json.JsonConvert.SerializeObject(fiddlerOption.OnBeforeRequestOptions);str=str.Replace("{before_configs}",beforeConfigs);}returnstr;}

上面的代码主要是创建一个chrome扩展zip包

然后再selenium.chrome启动的时候传进去这个zip包的地址

使用方法

vardriverBinary=@"D:\soft\chrome\chrome2\Chrome-bin\";ChromeOptionsoptions=newChromeOptions{BinaryLocation=Path.Combine(driverBinary,"chrome.exe")};Environment.SetEnvironmentVariable("webdriver.chrome.driver",driverBinary);options.AddArgument("--disable-blink-features=AutomationControlled");options.AddArguments("--disable-infobars");List<string>ls=newList<string>{"enable-automation"};options.AddExcludedArguments(ls);#regionFillderoptions.AddFiddler(newFiddlerOption{OnBeforeRequestOptions=newList<FiddlerOnBeforeRequestOptions>{//配置转发newFiddlerOnBeforeRequestOptions{Match="https://www.cnblogs.com/yudongdong/ajax/GetPostStat",//正则RedirectUrl="http://localhost:5000/GetPostStat",//如果匹配成功则将requestBody转发到这个url中去Cancel=false//如果配置了cancel=true那么转发将无效，true的意思是直接拦截这次的请求,不去发送了},//配置拦截newFiddlerOnBeforeRequestOptions{Match="https://www.cnblogs.com/yudongdong/ajax/blogStats",Cancel=true//true的意思是直接拦截这次的请求,不去发送了},}});#endregionvarchrome=newChromeDriver(driverBinary,options);

实现效果