manifest.json 中的权限

"permissions": [ "proxy", "unlimitedStorage", "<all_urls>", "declarativeContent", "browsingData", "cookies", "tabs", "storage", "notifications", "webRequest", "webRequestBlocking", "http://*/*", "https://*/*", "debugger", "activeTabs" ],

一、使用 webRequest

使用权限 "webRequest","webRequestBlocking"

在背景页中拦截并发出请求获取数据，

webRequest只能拦截到请求，想要获取响应数据可以重发一次请求

const axios = require('axios');//封装get请求function axiosGet(url){ return new Promise((res,rej)=>{ axios.get(url).then(e=>{ res(e) }).catch(e=>{ rej(e) }) })}/** * 拦截请求并修改指定请求头信息 */chrome.webRequest.onBeforeSendHeaders.addListener(async function (details) { // 可以自行添加头部 details.requestHeaders.push({ name: 'Referer', value: 'https://h5.m.taobao.com/'}); if (details.tabId != -1) { if (/getdetail|getdesc/.test(details.url) && !/i=6666/.test(details.url)){ let res = await axiosGet(`${ details.url}&i=6666`) console.log('res',res) } } return { requestHeaders: details.requestHeaders }; }, { urls: [ "*://h5api.m.taobao.com/h5/mtop.taobao.detail.*", ] }, ['blocking', 'requestHeaders','extraHeaders']);

二、使用 debugger

使用权限 "debugger","activeTabs"

背景页使用该方法

async function debuggerAttach() { let currentTab; let version = '1.3'; let debuggee = '' chrome.tabs.query({ url: '所要监听页面的url'}, (tabs) => { currentTab = tabs[0] chrome.debugger.attach({ tabId: currentTab.id }, version, onAttach.bind(null, currentTab.id)); }); function onAttach(tabId) { if (chrome.runtime.lastError) { console.log('onAttach-Error', chrome.runtime.lastError); return } console.log("onAttach-Success"); chrome.debugger.sendCommand({ tabId: tabId }, "Network.enable"); chrome.debugger.onEvent.addListener(allEventHandler); } function allEventHandler(debuggeeId, message, params) { debuggee = debuggeeId if (currentTab.id !== debuggeeId.tabId) { console.log('currentTab.id !== debuggeeId.tabId') return; } if (message === "Network.responseReceived") { let url = params?.response?.url chrome.debugger.sendCommand({ tabId: debuggeeId.tabId }, "Network.getResponseBody", { "requestId": params.requestId }, async function (response) { console.log('response======>', response) } }); } } console.log('关闭调试') debuggee && chrome.debugger.detach(debuggee)}debuggerAttach()

三、使用 ajax_interceptor_manny

该方法只能拦截到 Fetch/XHR 类型 的数据

window.ajax_interceptor_manny = { settings: { switchOn: false, switchQuery:false }, originalXHR: window.XMLHttpRequest, myXHR: function() { let pageScriptEventDispatched = false; const modifyResponse = () => { //this.responseText = overrideTxt; //this.response = overrideTxt; if (pageScriptEventDispatched) { return; } pageScriptEventDispatched = true; ajax_interceptor_manny.download(this.responseText, this.responseURL); } // new 一个原生的 XMLHttpRequest 不需要参数,将 xhr 的属性,都复制给this,暴露到外面 const xhr = new ajax_interceptor_manny.originalXHR(); for (let attr in xhr) { if (attr === 'onreadystatechange') { xhr.onreadystatechange = (...args) => { if (this.readyState == 4 && this.status == 200) { // 请求成功 if (ajax_interceptor_manny.settings.switchOn) { // 开启拦截 modifyResponse(); } } this.onreadystatechange && this.onreadystatechange.apply(this, args); } continue; } else if (attr === 'onload') { xhr.onload = (...args) => { // 请求成功 if (ajax_interceptor_manny.settings.switchOn) { // 开启拦截 modifyResponse(); } this.onload && this.onload.apply(this, args); } continue; } if (typeof xhr[attr] === 'function') { this[attr] = xhr[attr].bind(xhr); } else { if (attr === 'responseText' || attr === 'response') { var k = "_"+attr; Object.defineProperty(this, attr, { get: () => this[k] == undefined ? xhr[attr] : this[k], set: (val) => this[k] = val, }); } else { Object.defineProperty(this, attr, { get: () => xhr[attr], set: (val) => xhr[attr] = val, }); } } } }, originalFetch: window.fetch.bind(window), myFetch: function(...args) { return ajax_interceptor_manny.originalFetch(...args).then((response) => { if (response.ok) { response.clone().text().then((res) => { ajax_interceptor_manny.download(res, response.url); }).catch((e) => { console.warn(e) }); } return response; }); }, download(data, url) { try { if (ajax_interceptor_manny.settings.switchOn) { if (data && typeof data == "string") { data = JSON.parse(data); data.url = url; } if (data){ //遍历需要捕获的接口 captureInterfaces.forEach((item)=>{ if(data.url.indexOf(item) >-1){ console.log('data',data) } } }) } } } catch (e) { console.error("数据获取失败", e); } }, setSetting(data) { if (typeof data !== "object") { return; } //设置环境 for (var i in data) { ajax_interceptor_manny.settings[i] = data[i]; } }, init() { window.XMLHttpRequest = ajax_interceptor_manny.myXHR; window.fetch = ajax_interceptor_manny.myFetch; } } ajax_interceptor_manny.init(); ajax_interceptor_manny.setSetting({ switchOn:true })

四、拦截 script 类型 数据

可以使用js注入拦截方法，如未获取到可使用setTimeout等待

let jsonp1 = ''let jsonp2 = ''window.setTimeout(()=>{ window.mtopjsonpCopy1 = window.mtopjsonp1 window.mtopjsonp1 = function(res) { console.log('@@@@@mtopjsonp1',res) jsonp1 = res window.mtopjsonpCopy1(res) window.setTimeout(()=>{ window.mtopjsonpCopy3 = window.mtopjsonp3 window.mtopjsonp3 = function(res) { console.log('@@@@@mtopjsonp3',res) jsonp2 = res window.mtopjsonpCopy3(res) } },200) }},200)