使用chrome插件批量读取浏览器页面内容并写入数据库
优采云 发布时间: 2020-08-08 02:33想象一下,如果您想每天采集100页甚至更多的网页数据. 如果使用手动采集,则会吐血,因此使用程序进行采集将成为唯一选择. 首先,我肯定会考虑使用Java,PHP和C#等高级语言,但是有一个登录和验证代码,我很茫然. 您是否还在担心在网络上采集数据?很高兴,您找到了正确的地方.
应用场景:
1. 每天需要在网络上重复采集大量数据
2,登录后即可采集网页数据
3,网页可以翻页
解决方案:
手动登录,然后使用chrome插件方法进行采集. 当然,您会说使用硒等自动化测试方法进行采集会比较凉爽,并且可以每天自动采集,并且完全自动化,无需人工干预. 但是作为忠实的Chrome迷,您只需要前端js,服务器端接收文件和数据库即可完美解决此问题. 加上简单的部署和操作. 成为粉丝的原因很多. 好吧,即使这是保存国家并实现它的顽固曲线.
思考:
帮助手册:
示例:
获取电子商务公司的后端订单数据
1. 创建一个项目文件夹并导入所需的文件: 例如D: \ tool \ chrome_server_plugin
jquery-2.1.1.min.js,icon.png
2,创建background.html
3,创建配置文件manifest.json文件
{
"name": "获取某电商后台订单信息",
"version": "1.0",
"manifest_version": 2,
"description": "*********获取某电商后台订单信息*********",
"browser_action": {
"default_icon": "icon.png"
},
"permissions": [
"webNavigation",
"tabs",
"contextMenus",
"http://服务器接受数据url/"
],
"background": {
"scripts": ["eventPage.js","jquery-2.1.1.min.js"]
},
"content_scripts": [
{
"matches": ["http://抓取页面url/*"],
"js": ["jquery-2.1.1.min.js", "contentscript.js"]
}
]
}
4,创建前端js文件contentscript.js
var totalPage;
var page = 0;
//注册前台页面*敏*感*词*事件
chrome.extension.onMessage.addListener(
function(request, sender, sendResponse) {
totalPage = $("input[name=totalPage]").val();
console.log("totalPage----------" + totalPage);
//console.log("msg----------contentscript.js" + request.greeting);
getOrderInfo( sendResponse );
});
//获取订单信息
function getOrderInfo( sendResponse ){
var flag = false;
payMoney = [];//货款金额
orderTime = [];//下单时间
$("tr[class=head] span").each(function(index){
spantxt = '';
spantxt = $(this).text();
if(spantxt.indexOf('货款金额:') > -1){
money = spantxt.substr(5);
//console.log(index + "---------payMoney-------货款金额:" + money);
payMoney.push(money);
}else if(spantxt.indexOf('下单时间:') > -1){
time = spantxt.substr(5);
//console.log(index + "---------orderTime-------下单时间:" + time);
orderTime.push(time);
}
});
paytype = [];//物流方式
yunfei = [];//运费
$("td[class=p-values]").each(function(index){
tdtxt = '';
tdtxt = $(this).text();
if(tdtxt.indexOf('*敏*感*词*') > -1){
paytype.push('*敏*感*词*');
}else{
paytype.push('在线支付');
}
yf_index = tdtxt.indexOf('运费:');
if(yf_index > -1){
temp = tdtxt.substr(yf_index);
temp_yf = temp.substr(3);
//console.log(index + "---------yunfei-------"+ temp +"===" + temp_yf);
yunfei.push(temp_yf);
}else{
yunfei.push(0);
}
//console.log(index + "---------tdtxt-------" + tdtxt);
});
orderStatus = [];//订单状态
users = [];//买家账号
remark = [];//备注
$("tr[class=content] td[class=t-c]").each(function(index){
tdtxt = '';
tdtxt = $(this).text().replace(/[\r\n]\ +/g,"");//将回车,换行,空格去掉
temp = index % 5;
if(1 == temp){
orderStatus.push(tdtxt);
//console.log(index + "---------statu-------" + tdtxt);
}else if(2 == temp){
users.push(tdtxt);
//console.log(index + "---------users-------" + tdtxt);
}else if(3 == temp){
remark.push(tdtxt);
//console.log(index + "---------remark-------" + tdtxt);
}
});
express = [];//快递单号
$("tr[class=content] td div[style='text-align: center;']").each(function(index){
tdtxt = '';
tdtxt = $(this).text().replace(/[\r\n]\ +/g,"");//将回车,换行,空格去掉
express.push(tdtxt);
//console.log( "============快递单号=======" + tdtxt);
});
orderInfo = [];
splitstr = "@_@";
$("tr[class=head] a[track=orderinfopagebeta]").each(function(index){
orderid = $(this).text();
//console.log("---------orderid-------" + orderid);
mycomment = $("a[id=comment_" + orderid + "]").attr('style').replace(/[\r\n]\ +/g,"");
if("display: block;" == mycomment){
mycomment = '已评价';
}else if('display:none;' == mycomment){
mycomment = '未评价';
}
tempshopid = $("img[id=remarkFlag_" + orderid + "]").attr('onclick');
shopidIndex = tempshopid.indexOf(",");
shopid = tempshopid.substr(shopidIndex + 1).replace(/[\)\;]/g,"");
//console.log("---------shopid-------" + shopid);
orderdesc = shopid + splitstr + orderid + splitstr + mycomment + splitstr + payMoney[index] + splitstr + orderTime[index] + splitstr + paytype[index] + splitstr + yunfei[index] + splitstr + orderStatus[index] + splitstr + users[index] + splitstr + remark[index] + splitstr + express[index];
console.log("---------orderdesc-------" + orderdesc);
orderInfo.push(orderdesc);
});
//chrome.extension.sendMessage({"orderInfo": orderInfo}, function(response) {});
page = parseInt($("a[class=current]").text());
totalPage = parseInt($("input[name=totalPage]").val());
console.log(page + "--page-----------totalPage---" + totalPage);
if(page < totalPage && page < 100){
console.log("---------next-------");
sendMsg( orderInfo, "next" );
$('a.next')[1].click();
}else{
console.log("---------end-------");
sendMsg( orderInfo, "end" );
}
//
}
//将获取内容传递给后台文件进行处理
function sendMsg( msg, cmd){
chrome.extension.sendMessage({"msg": msg, "cmd": cmd}, function(response) {});
}
5. 创建一个后台处理js文件eventPage.js
var flag = false;
var currentTabId;
chrome.browserAction.onClicked.addListener(function(tab) {
counter = 40;
console.log('Turning ' + tab.url);
flag = true;
currentTabId = tab.id;
chrome.tabs.getSelected(null, function(tab) {
sendMsg(tab.id);
});
});
chrome.webNavigation.onCompleted.addListener(function( tab ){
console.log('加载完成***' + tab.tabId );
if( flag ){
sendMsg( tab.tabId );
}
});
chrome.extension.onMessage.addListener(
function(request, sender, sendResponse) {
console.log("*******evenPage.js***chrome.extension.onMessage.addListener");
articleData = request;
$.ajax({
url: "服务器接受数据URL/getOrderinfo.php",
cache: false,
type: "POST",
data: {'orderinfo': request.msg.join("#$#")},
dataType: "json"
}).done(function(msg) {
console.log('*******************json*************' + msg.sql );
chrome.tabs.sendMessage(currentTabId, {"cmd":"end"},
function(response) {
console.log(response);
});
}).fail(function(jqXHR, textStatus) {
articleData.firstAccess = textStatus;
});
cmd = request.cmd;
if('end' == cmd){
flag = false;//确保不会自动运行
}
});
function sendSku2Info(colores){
chrome.tabs.query(
{active: true, currentWindow: true}, function(tabs) {
chrome.tabs.sendMessage(tabs[0].id, {"cmd":"ok", "sku": colores},
function(response) {
console.log(response);
});
});
}
function sendMsg( tabid ){
console.log(tabid + "--sendMsg()----eventPage.js");
chrome.tabs.sendMessage(tabid, {greeting: "start working"}, function(response) {
});
}
4. 创建一个服务器来接收文件getOrderInfo.php(亲爱的,将其放置在服务器上!)
<p>