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Javascript Ajax获取URL请求失败,但hurl.it获取相同URL的请求有效。有什么好处?_Javascript_Jquery_Ajax_Get_Web Scraping - Fatal编程技术网

Javascript Ajax获取URL请求失败,但hurl.it获取相同URL的请求有效。有什么好处?

Javascript Ajax获取URL请求失败,但hurl.it获取相同URL的请求有效。有什么好处?,javascript,jquery,ajax,get,web-scraping,Javascript,Jquery,Ajax,Get,Web Scraping,我正在尝试访问网页的内容,这是我正在创建的javascript Chrome扩展功能的一部分,我遇到了一些难题 在扩展脚本中,当作为Ajax GET请求的一部分访问资源时,资源无法正确加载。当我尝试通过相同的GET请求时(打开follow重定向且不修改报头),数据将加载。如果我只是在浏览器中输入URL,它也可以工作 我不知道Hull是什么,它的请求和我自己的请求有什么不同 我试图查询的URL的形式为(以“Hello”作为示例搜索): 这将出现在我的脚本中,如: var get_url = "h

我正在尝试访问网页的内容,这是我正在创建的javascript Chrome扩展功能的一部分,我遇到了一些难题

在扩展脚本中,当作为Ajax GET请求的一部分访问资源时,资源无法正确加载。当我尝试通过相同的GET请求时(打开follow重定向且不修改报头),数据将加载。如果我只是在浏览器中输入URL,它也可以工作

我不知道Hull是什么,它的请求和我自己的请求有什么不同

我试图查询的URL的形式为(以“Hello”作为示例搜索):

这将出现在我的脚本中,如:

var get_url = "http://overdrive.dclibrary.org/BANGSearch.dll?Type=FullText&PerPage=24&URL=SearchResults.htm&Sort=SortBy%3DRelevancy&FullTextField=All&FullTextCriteria=Hello&x=0&y=0"

$.get(get_url,function(data){
    console.log(data);
});
为了清楚起见,上面的代码将向控制台输出HTML。它只是不包含搜索查询的任何结果

提前谢谢


编辑:我的扩展名已被授予访问dclibrary.org域中任何内容的权限。

响应中有重定向,这可能会破坏浏览器。HTTP/1.1 302暂时在chrome中运行。为什么它返回302响应?使用ASP.net/IIS时,有时会使用302响应重定向未经授权(未登录)的用户。这是不好的行为,如果需要登录,它应该发出403,但显然这不是目的

使用Fiddler调试完整的标题(或chrome开发工具)

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a=t("handle"),s=t(1),c=(t(2),window),f=c.document,u="addEventListener",d="attachEvent",p=(""+location).split("?")[0],h={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net",agent:"js-agent.newrelic.com/nr-593.min.js"},l=e.exports={offset:i(),origin:p,features:{}};f[u]?(f[u]("DOMContentLoaded",o,!1),c[u]("load",n,!1)):(f[d]("onreadystatechange",r),c[d]("onload",n)),a("mark",["firstbyte",i()])},{1:20,2:11,handle:"D5DuLP"}],20:[function(t,e){function n(t,e){var n=[],o="",i=0;for(o in t)r.call(t,o)&&(n[i]=e(o,t[o]),i+=1);return n}var r=Object.prototype.hasOwnProperty;e.exports=n},{}],21:[function(t,e){function n(t,e,n){e||(e=0),"undefined"==typeof n&&(n=t?t.length:0);for(var r=-1,o=n-e||0,i=Array(0>o?0:o);++r<o;)i[r]=t[e+r];return i}e.exports=n},{}],22:[function(t,e){function n(t){return!(t&&"function"==typeof t&&t.apply&&!t[i])}var r=t("ee"),o=t(1),i="nr@wrapper",a=Object.prototype.hasOwnProperty;e.exports=function(t){function e(t,e,r,a){function nrWrapper(){var n,i,s,f;try{i=this,n=o(arguments),s=r&&r(n,i)||{}}catch(d){u([d,"",[n,i,a],s])}c(e+"start",[n,i,a],s);try{return f=t.apply(i,n)}catch(p){throw c(e+"err",[n,i,p],s),p}finally{c(e+"end",[n,i,f],s)}}return n(t)?t:(e||(e=""),nrWrapper[i]=!0,f(t,nrWrapper),nrWrapper)}function s(t,r,o,i){o||(o="");var a,s,c,f="-"===o.charAt(0);for(c=0;c<r.length;c++)s=r[c],a=t[s],n(a)||(t[s]=e(a,f?s+o:o,i,s,t))}function c(e,n,r){try{t.emit(e,n,r)}catch(o){u([o,e,n,r])}}function f(t,e){if(Object.defineProperty&&Object.keys)try{var n=Object.keys(t);return n.forEach(function(n){Object.defineProperty(e,n,{get:function(){return t[n]},set:function(e){return t[n]=e,e}})}),e}catch(r){u([r])}for(var o in t)a.call(t,o)&&(e[o]=t[o]);return e}function u(e){try{t.emit("internal-error",e)}catch(n){}}return t||(t=r),e.inPlace=s,e.flag=i,e}},{1:21,ee:"QJf3ax"}]},{},["G9z0Bl",4,9]);</script><title>Object moved</title></head><body>
<h2>Object moved to <a href="http://overdrive.dclibrary.org/4F2C56FC-9659-4640-9E00-9433B3CC9A7F/10/50/en/SearchResults.htm?searchid=38432201s&amp;sortby=Relevancy">here</a>.</h2>
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