chrome.webRequest不工作？ [英] chrome.webRequest not working?
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问题描述
我试图在扩展中实现chrome.webRequest API，但由于某种原因，无论我做什么，它都无法正常工作。有人可以发布使用示例吗？或纠正我的错误？基本上我试图做的是拦截从响应收到的头。
这是一个onBeforeSendHeaders的实现，但我也想使用OnHeadersRecieved以及
：
var requestFilter = {
网址：[< all_urls> ]
}，
//'extraInfoSpec'参数修改Chrome调用
//监听器函数的方式。 'requestHeaders'确保'details'
//对象有一个名为'requestHeaders'的关键字，包含头部，
//和'blocking'确保函数返回的对象是
/ /用于覆盖头文件
extraInfoSpec = ['requestHeaders'，'blocking']，
// Chrome将调用您的侦听器函数来响应每个
// HTTP请求
handler = function（details）{
alert（details）;
var headers = details.requestHeaders，
lockResponse = {};
//每个头部参数都存储在一个数组中。由于Chrome
//不能保证这个数组的内容/顺序，所以
//你必须遍历它才能找到
//'User-Agent'元素
for（var i = 0，l = headers.length; i< l; ++ i）{
if（headers [i] .name =='User-Agent'）{
headers [i] .value ='>>>您的新用户代理字符串位于<<<
休息;
}
//如果你想修改其他头文件，这是
//做的地方。删除'break;'语句并添加更多
//条件或在'headers [i] .name'
}
blockingResponse上使用'switch'语句。 requestHeaders =头文件;
返回blockingResponse;
};
chrome.webRequest.onBeforeSendHeaders.addListener（handler，requestFilter，extraInfoSpec）;
这是我的清单文件：
{
background_page：iRBackground.html，
browser_action：{
default_icon：Off.png，
popup：iRMenu.html
}，
content_scripts：[{
js：[Content.js]，
matches： [http：// * / *]，
run_at：document_start
}]，
description：***，
图标：{
128：On128x128.png，
16：On.png，
48：On48x48.png
}，
key：****，
manifest_version：2，
name：***，
permissions：[tabs通知，unlimitedStorage，webRequest，webRequestBlocking，< all_urls>]，
update_url：*** / Chrome / UpdateVersion.xml，
version：1.3
}
我从Chrome获得的错误是： Uncaught TypeError：无法读取属性'onBeforeSendHeaders'o f undefined
任何人都可以看到任何错误？谢谢
解决方案
好的，我可以给你这个工作代码的例子。我是这样写的，因为另一种方式似乎倒退了，但这只是我个人的偏好，它们应该都是相同的。
$ b
Manifest
{
name：Chrome webrequest test，
version：0.1 ，
description：webrequest测试，
manifest_version：2，
permissions：[
< all_urls>，webRequest ，webRequestBlocking
]，
background：{
scripts：[bgp.js]，
persistent：true
}
}
bgp.js
chrome.webRequest.onBeforeSendHeaders.addListener（function（details）{
//console.log(JSON.stringify(details））;
var headers = details.requestHeaders，
blockingResponse = {};
//每个头部参数都存储在一个数组中，因为Chrome
//不保证这个数组的内容/顺序
//你必须迭代e通过它找到
//'User-Agent'元素
（var i = 0，l = headers.length;我<升; ++ i）{
if（headers [i] .name =='User-Agent'）{
headers [i] .value ='>>>您的新用户代理字符串位于<<<
console.log（headers [i] .value）;
休息;
}
//如果你想修改其他头文件，这是
//做的地方。删除'break;'语句并添加更多
//条件或在'headers [i] .name'
}
blockingResponse上使用'switch'语句。 requestHeaders =头文件;
返回blockingResponse;
}，
{url：[< all_urls> ]}，[ requestHeaders’，阻断]）;
I'm trying to implement the chrome.webRequest API in my extension but for some reason it's just not working no matter what I do. Can someone post an example of usage? or correct my mistakes? Basically what I'm trying to do is to intercept the recieved headers from a response.
This is an implementation for onBeforeSendHeaders but I'd like to use OnHeadersRecieved as well :
var requestFilter = {
urls: [ "<all_urls>" ]
},
// The 'extraInfoSpec' parameter modifies how Chrome calls your
// listener function. 'requestHeaders' ensures that the 'details'
// object has a key called 'requestHeaders' containing the headers,
// and 'blocking' ensures that the object your function returns is
// used to overwrite the headers
extraInfoSpec = ['requestHeaders','blocking'],
// Chrome will call your listener function in response to every
// HTTP request
handler = function( details ) {
alert(details);
var headers = details.requestHeaders,
blockingResponse = {};
// Each header parameter is stored in an array. Since Chrome
// makes no guarantee about the contents/order of this array,
// you'll have to iterate through it to find for the
// 'User-Agent' element
for( var i = 0, l = headers.length; i < l; ++i ) {
if( headers[i].name == 'User-Agent' ) {
headers[i].value = '>>> Your new user agent string here <<<';
break;
}
// If you want to modify other headers, this is the place to
// do it. Either remove the 'break;' statement and add in more
// conditionals or use a 'switch' statement on 'headers[i].name'
}
blockingResponse.requestHeaders = headers;
return blockingResponse;
};
chrome.webRequest.onBeforeSendHeaders.addListener( handler, requestFilter, extraInfoSpec );
this is my manifest file:
{
"background_page": "iRBackground.html",
"browser_action": {
"default_icon": "Off.png",
"popup": "iRMenu.html"
},
"content_scripts": [ {
"js": [ "Content.js" ],
"matches": [ "http://*/*" ],
"run_at": "document_start"
} ],
"description": "***",
"icons": {
"128": "On128x128.png",
"16": "On.png",
"48": "On48x48.png"
},
"key": "****",
"manifest_version": 2,
"name": "***",
"permissions": [ "tabs", "notifications", "unlimitedStorage", "webRequest", "webRequestBlocking", "<all_urls>"],
"update_url": "***/Chrome/UpdateVersion.xml",
"version": "1.3"
}
the error I get from Chrome is: Uncaught TypeError: Cannot read property 'onBeforeSendHeaders' of undefined
Anyone see anything wrong??? thanks
解决方案
Well for an example of usage I can give you this working code. I wrote it this way because the other way seems backwards to me but that is just my personal preference, they should both work the same.
Manifest
{
"name": "Chrome webrequest test",
"version": "0.1",
"description": "A test for webrequest",
"manifest_version": 2,
"permissions": [
"<all_urls>","webRequest","webRequestBlocking"
],
"background": {
"scripts": ["bgp.js"],
"persistent": true
}
}
bgp.js
chrome.webRequest.onBeforeSendHeaders.addListener(function(details){
//console.log(JSON.stringify(details));
var headers = details.requestHeaders,
blockingResponse = {};
// Each header parameter is stored in an array. Since Chrome
// makes no guarantee about the contents/order of this array,
// you'll have to iterate through it to find for the
// 'User-Agent' element
for( var i = 0, l = headers.length; i < l; ++i ) {
if( headers[i].name == 'User-Agent' ) {
headers[i].value = '>>> Your new user agent string here <<<';
console.log(headers[i].value);
break;
}
// If you want to modify other headers, this is the place to
// do it. Either remove the 'break;' statement and add in more
// conditionals or use a 'switch' statement on 'headers[i].name'
}
blockingResponse.requestHeaders = headers;
return blockingResponse;
},
{urls: [ "<all_urls>" ]},['requestHeaders','blocking']);
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