运行chrome扩展并在页面加载时将数据提交给PHP脚本(自动执行该过程) [英] Run chrome extension and submit data to PHP script on page load (automate the process)
问题描述
我第一次使用Chrome扩展进行网页抓取。我在HTML弹出窗口中获取数据,然后在按钮单击时将其提交给PHP脚本。现在我想在页面加载时执行此功能。因此,页面加载数据将被收集并提交给PHP脚本。我使用的扩展名如下
menifest.json
{
manifest_version:2,
name:Test Extension,
version:1.0,
offline_enabled:true,
background:{
scripts:[background.js]
},
content_scripts:[{
matches:[http: // * / *,https:// * / *],
js:[jquery.min.js,content.js],
run_at: document_end
}],
permissions:[
tabs,
http:// * / *,
file:// / *,
下载
],
page_action:{
default_title:测试扩展,
default_popup :popup.html
}
}
content.js
chrome.runtime.onMessage.addListener(函数(msg,sender,response){
/ * First ,验证消息的结构* /
if (msg.from&& (msg.from ===popup)
&& msg.subject&& (msg.subject ===DOMInfo)){
/ *收集必要的数据
*(根据您的具体要求,document.querySelectorAll(...)`
*应该是等价于jquery的`$(...)`)* /
var domInfo = {
name:$('ul.companyDetails li:nth-child(1) > br')。get(0).nextSibling.nodeValue.trim(),
address:$('ul.companyDetails li:nth-child(2)> br')。get(0)。 (1).nextSibling.nodeValue.trim(),$ b() $ b reg_date:$('ul.companyDetails li:nth-child(3)> br')。get(0).nextSibling.nodeValue.trim(),
legal_form:$('ul.companyDetails li :nth-child(4)> br')。get(0).nextSibling.nodeValue.trim()
};
/ *通过指定的回调* /
响应(domInfo)直接响应发件人(弹出)
*;
}
});
/ *用新数据更新相关字段* /
函数setDOMInfo(info){
document.getElementById(name)。value = info.name;
document.getElementById(address)。value = info.address;
document.getElementById(reg_date)。value = info.reg_date;
document.getElementById(legal_form)。value = info.legal_form;
$ b / *一旦DOM准备就绪... * /
window.addEventListener(DOMContentLoaded,function(){
//console.log (DOMContented ...)
/ * ...查询活动选项卡... * /
chrome.tabs.query({
active:true,
currentWindow:true
},函数(标签){
/ * ...并发送DOM信息的请求... * /
chrome.tabs.sendMessage(
标签[0] .id,
{from:popup,主题:DOMInfo},
/ * ...还指定从接收端调用
*的回调(内容脚本)* /
setDOMInfo);
});
});
document.addEventListener('DOMContentLoaded',function(){
document.getElementById('btn_php_call')
.addEventListener('click',download);
});
函数下载()
{
event.preventDefault();
//将数据发布到
的URL postUrl ='链接到PHP脚本';
//设置异步AJAX POST请求
var xhr = new XMLHttpRequest();
xhr.open('POST',postUrl,true);
//准备要由URLEncoding每个字段的内容发布的数据
//处理请求状态更改事件
xhr。 onreadystatechange = function(){
};
xhr.setRequestHeader('Content-Type','application / x-www-form-urlencoded');
//发送请求并设置状态
xhr.send($('#frm_info')。serialize());
}
popup.html
< html>
< head>
< script type =text / javascriptsrc =jquery.min.js>< / script>
< script type =text / javascriptsrc =popup.js>< / script>
< / head>
< body>
< form id =frm_info>
< h3 style =font-weight:bold; text-align:center;> DOM Info< / h3>
< input type =textname =nameid =namevalue =>
< input type =textname =addressid =addressvalue =>
< input type =textname =reg_dateid =reg_datevalue =>
< input type =textname =legal_formid =legal_formvalue =>
< input type =buttonid =btn_php_callvalue =submit>
< / form>
< / body>
< / html>
目前我需要点击Chrome扩展,然后在popup.html中进行数据渲染,当我点击提交按钮,然后数据发送到PHP。我想在页面加载时做到这一点,所以用户不需要手动进行。
编辑:
当我点击扩展名(T符号)时,我添加了Chrome扩展的图片。那么它会弹出加载信息。当我点击提交数据弹出去PHP脚本
在您的清单中,更改当前的background
键:
background:{page:background.html ,persistent:true}
和您的content_scripts
:
$ b
content_scripts:[{matches:the_URLs_you_want_to_scrape,js:[content.js]run_at :document_idle}]
这将是 background.html :
< html>
< body>
< form id = myForm>
< input type =textname =nameid =name>
< input type =textname =addressid =address>
< input type =textname =reg_dateid =reg_date>
< input type =textname =legal_formid =legal_form>
< / form>
< script src =background.js>< / script>
< / body>
< / html>
在 background.js 文件中包含以下内容:
chrome.runtime.onMessage.addListener(function(message){
if(message.from ==cs){
document.getElementById(name)。value = message.name;
document.getElementById(address)。value = message.address;
document.getElementById(reg_date)。value = message.reg_date;
document.getElementById(legal_form)。value = message.legal_form;
var encodedData = [] .reduce.call(document.getElementById(myForm)) .elements,function(acc,cur){
acc.push(cur.name +=+ encodeURIComponent(cur.value)); return acc},[])。join(&);
var xhr = new XMLHttpRequest();
xhr.onload = function(){
//检查响应
}
xhr.open( POST,your_link_to_PHP_script);
xhr.setRequestHeader('Content-Type','application / x-www-form-urlencoded');
xhr.send(encodedData);
}
});
然后您的 content.js 将直接显示为:
var myMessage = {
from:cs,
name:document.querySelector('ul.companyDetails li:nth -child(1)> br')。nextSibling.nodeValue.trim(),
address:document.querySelector('ul.companyDetails li:nth-child(2)> br')。nextSibling.nodeValue .trim()+
+ document.querySelectorAll('ul.companyDetails li:nth-child(2)> br')[1] .nextSibling.nodeValue.trim(),
reg_date :document.querySelector('ul.companyDetails li:nth-child(3)> br')。nextSibling.nodeValue.trim(),
legal_form:document.querySelector('ul.companyDetails li:nth-child (4)> br')。nextSibling.nodeValue.trim()
};
chrome.runtime.sendMessage(myMessage);
奖励:您不需要JQuery:)
I am first time using chrome extension for web crawling. I get data in HTML popup and then submits it to PHP script on button click. Now I want to do this functionality on page load. So on page load data will be collected and submit it to PHP script. I am using extension as below
menifest.json
{
"manifest_version": 2,
"name": "Test Extension",
"version": "1.0",
"offline_enabled": true,
"background": {
"scripts": ["background.js"]
},
"content_scripts": [{
"matches": [ "http://*/*", "https://*/*"],
"js": ["jquery.min.js","content.js"],
"run_at": "document_end"
}],
"permissions": [
"tabs",
"http://*/*",
"file:///*",
"downloads"
],
"page_action": {
"default_title": "Test Extension",
"default_popup": "popup.html"
}
}
content.js
chrome.runtime.onMessage.addListener(function(msg, sender, response) {
/* First, validate the message's structure */
if (msg.from && (msg.from === "popup")
&& msg.subject && (msg.subject === "DOMInfo")) {
/* Collect the necessary data
* (For your specific requirements `document.querySelectorAll(...)`
* should be equivalent to jquery's `$(...)`)*/
var domInfo = {
name : $('ul.companyDetails li:nth-child(1) > br').get(0).nextSibling.nodeValue.trim(),
address : $('ul.companyDetails li:nth-child(2) > br').get(0).nextSibling.nodeValue.trim() + " "
+ $('ul.companyDetails li:nth-child(2) > br').get(1).nextSibling.nodeValue.trim(),
reg_date : $('ul.companyDetails li:nth-child(3) > br').get(0).nextSibling.nodeValue.trim(),
legal_form : $('ul.companyDetails li:nth-child(4) > br').get(0).nextSibling.nodeValue.trim()
};
/* Directly respond to the sender (popup),
* through the specified callback */
response(domInfo);
}
});
popup.js
/* Update the relevant fields with the new data */
function setDOMInfo(info) {
document.getElementById("name").value = info.name;
document.getElementById("address").value = info.address;
document.getElementById("reg_date").value = info.reg_date;
document.getElementById("legal_form").value = info.legal_form;
}
/* Once the DOM is ready... */
window.addEventListener("DOMContentLoaded", function() {
//console.log("DOMContented...")
/* ...query for the active tab... */
chrome.tabs.query({
active: true,
currentWindow: true
}, function(tabs) {
/* ...and send a request for the DOM info... */
chrome.tabs.sendMessage(
tabs[0].id,
{ from: "popup", subject: "DOMInfo" },
/* ...also specifying a callback to be called
* from the receiving end (content script) */
setDOMInfo);
});
});
document.addEventListener('DOMContentLoaded', function () {
document.getElementById('btn_php_call')
.addEventListener('click', download);
});
function download()
{
event.preventDefault();
// The URL to POST our data to
var postUrl = 'link to PHP script';
// Set up an asynchronous AJAX POST request
var xhr = new XMLHttpRequest();
xhr.open('POST', postUrl, true);
// Prepare the data to be POSTed by URLEncoding each field's contents
// Handle request state change events
xhr.onreadystatechange = function() {
};
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
// Send the request and set status
xhr.send($('#frm_info').serialize());
}
popup.html
<html>
<head>
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="popup.js"></script>
</head>
<body>
<form id="frm_info">
<h3 style="font-weight:bold; text-align:center;"> DOM Info </h3>
<input type="text" name="name" id="name" value="">
<input type="text" name="address" id="address" value="">
<input type="text" name="reg_date" id="reg_date" value="">
<input type="text" name="legal_form" id="legal_form" value="">
<input type="button" id="btn_php_call" value="submit">
</form>
</body>
</html>
Currently I need to click on chrome extension then data renders in popup.html and when I click on submit button then data goes to PHP. I want to do it on page load so user will no need to do it manually.
Edit : I added image of chrome extension when I click on extension (T symbol). then it load information in popup. When I click on submit data in popup goes to PHP script
Use the background page
In your manifest, change your current "background"
key with:
"background": { "page" : "background.html", "persistent": true}
and your "content_scripts"
key with:
"content_scripts": [{"matches":"the_URLs_you_want_to_scrape", "js" : ["content.js"], "run_at": "document_idle"}]
This will be background.html:
<html>
<body>
<form id=myForm>
<input type="text" name="name" id="name">
<input type="text" name="address" id="address">
<input type="text" name="reg_date" id="reg_date">
<input type="text" name="legal_form" id="legal_form">
</form>
<script src="background.js"></script>
</body>
</html>
In your background.js file include this:
chrome.runtime.onMessage.addListener(function(message){
if (message.from == "cs") {
document.getElementById("name").value = message.name;
document.getElementById("address").value = message.address;
document.getElementById("reg_date").value = message.reg_date;
document.getElementById("legal_form").value = message.legal_form;
var encodedData = [].reduce.call(document.getElementById("myForm").elements, function(acc,cur){
acc.push(cur.name+"="+encodeURIComponent(cur.value));return acc},[]).join("&");
var xhr = new XMLHttpRequest();
xhr.onload = function(){
//check the response
}
xhr.open("POST",your_link_to_PHP_script);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xhr.send(encodedData);
}
});
Then your content.js will directly be:
var myMessage = {
from: "cs",
name : document.querySelector('ul.companyDetails li:nth-child(1) > br').nextSibling.nodeValue.trim(),
address : document.querySelector('ul.companyDetails li:nth-child(2) > br').nextSibling.nodeValue.trim() + " "
+ document.querySelectorAll('ul.companyDetails li:nth-child(2) > br')[1].nextSibling.nodeValue.trim(),
reg_date : document.querySelector('ul.companyDetails li:nth-child(3) > br').nextSibling.nodeValue.trim(),
legal_form : document.querySelector('ul.companyDetails li:nth-child(4) > br').nextSibling.nodeValue.trim()
};
chrome.runtime.sendMessage(myMessage);
Bonus: you don't need JQuery :)
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