如何使用javas内置的javascript引擎在网页上运行脚本？

发布于 2024-09-14 05:21:13 字数 1289 浏览 4 评论 0原文

我想在我的播放器中显示歌曲的歌词。我曾经使用lyricsplugin.com，因为它有很多英语和俄语歌词，但最近他们将网站从静态页面更改为ajax 驱动的页面。搜索歌词遵循以下模式：

http://www.lyricsplugin .com/winamp03/plugin/?artist=Linkin%20Park&title=Numb

它显示一个空页面，并且在正文 onload 中：

javascript:getContent('Linkin%20Park', 'Numb', '1281528101', '5e22e4e3979026a9af59ee16ff82fe1f')

而 getContent 看起来像这样：

function getContent(artist, title, time, check) { 
xmlHttp = GetXmlHttpObject();
if(xmlHttp == null)
{
    return;
}
var url = "content.php?artist=" + artist + "&title=" + title + "&time=" + time + "&check=" + check;
xmlHttp.onreadystatechange = stateChanged;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}

stateChanged( ) 然后将响应放入页面中相应的div中。

所以我想我可以下载该页面并构建一个 DOM 树，因为它是 XHTML。如何使用内置的 rhino 引擎执行 JavaScript 并最好覆盖 stateChanged() 函数？我似乎无法直接调用 content.php 脚本。

除了lyrics.wikia.com 之外，没有其他资源有那么多歌词（尤其是俄语），但它们不允许屏幕抓取。

更新：

歌词插件似乎正在使用justsomelyrics.com并且有一个谷歌自定义搜索框。我怎样才能从java访问它？

原文

I want to show lyrics for songs in my player. I used to use lyricsplugin.com because it had a lot of English and Russian lyrics, but recently they've changed their web-site from being a static page to an ajax-powered page. Searching lyrics follows this pattern:

http://www.lyricsplugin.com/winamp03/plugin/?artist=Linkin%20Park&title=Numb

It shows an empty page and this in body onload:

javascript:getContent('Linkin%20Park', 'Numb', '1281528101', '5e22e4e3979026a9af59ee16ff82fe1f')

while getContent looks like this:

function getContent(artist, title, time, check) { 
xmlHttp = GetXmlHttpObject();
if(xmlHttp == null)
{
    return;
}
var url = "content.php?artist=" + artist + "&title=" + title + "&time=" + time + "&check=" + check;
xmlHttp.onreadystatechange = stateChanged;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}

stateChanged() then puts response into corresponding div in the page.

So I guess I can download the page and build a DOM tree since it is XHTML. How do I use the built in rhino engine to execute the javascript and preferably override the stateChanged() function? I don't seem to be able to call that content.php script directly.

No other resource has that many lyrics (especially Russian) except for lyrics.wikia.com, but they don't allow screen scraping.

UPDATE:

lyricsplugin seems to be using justsomelyrics.com and there is a google custom search box. How can I access it from java?

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