我有一个代码从页面获取HTML内容，然后获取特定字符串的索引，然后将其拆分。
我的问题是，它没有正确分裂，而且还有不受欢迎的字符串。
代码：
URL = "https://drive.google.com/file/d/0B7--EhvK76QDRktKZm04MXVjVTQ/view";
html = Jsoup.connect(URL).get().html();
FirstDecoded = URLDecoder.decode(html, "UTF-8");
int Start = FirstDecoded.indexOf("[\"fmt_stream_map\"");
int End = FirstDecoded.indexOf("\"fmt_list\"");
String FirstSplit = FirstDecoded.substring(Start + 22, -5 + End);
String[] DummyTexts = {"<html>","<head>","</head>","<body>","</body>","</html"};
if(FirstSplit.contains(DummyTexts[0]))
FirstSplit.replace(DummyTexts[0],"");
if(FirstSplit.contains(DummyTexts[1]))
FirstSplit.replace(DummyTexts[1],"");
if(FirstSplit.contains(DummyTexts[2]))
FirstSplit.replace(DummyTexts[2],"");
if(FirstSplit.contains(DummyTexts[3]))
FirstSplit.replace(DummyTexts[3],"");
if(FirstSplit.contains(DummyTexts[4]))
FirstSplit.replace(DummyTexts[4],"");
FirstSplit.trim();
String[] Splitted = FirstSplit.split("|");
我想要的是什么：
拆分前
地址| URL | URL | URL
分裂后
[0] =网址 [1] =第二个网址
结果（我不想要的）：
<!html>*a new line*<head></head>*a new line*<body>*a new line**white space*URL|URL|URL*a new line**2 White Space*</body></html>
如果我尝试拆分它，[0]为空，[1]为<!。
HTML是：
<!doctype html>
<html>
<head>
<meta name="google" content="notranslate">
<meta http-equiv="X-UA-Compatible" content="IE=edge;">
<meta name="fragment" content="!">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">
<title>OnClick.mp4 - Google Drive</title>
<meta property="og:title" content="OnClick.mp4">
<meta property="og:type" content="article">
<meta property="og:site_name" content="Google Docs">
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<meta itemprop="faviconUrl" content="https://ssl.gstatic.com/docs/doclist/images/icon_14_video_favicon.ico">
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答案 0 :(得分：1)
不花太多时间看你的逻辑，我可以看到你认为
FirstSplit.replace(DummyTexts[0],"");
实际上更改了String FirstSplit，但它并没有。在Java中，字符串是不可变的，因此它们无法改变。
用这样的东西替换所有这些行（显然在DummyTexts中使用不同的索引）：
FirstSplit = FirstSplit.replace(DummyTexts[0], "");
请注意，这并不是更改 FirstSplit，它只是更改String FirstSplit引用的内容，将其设置为replace方法返回的新String。这可能会让你得到你想要的东西，假设剩下的东西都有效。
好的，你说你改成了这个，它仍然没有用。这可能是因为您正在创建的FirstDecoded字符串基本上是您列出的HTML中的fmt_stream_map行（减去正面和背面的几个字符）：
"fmt_stream_map","37|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d37&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d3DC24BBB45AB0C09B1633ABC215282DAD3275086.1E524A3C98B38084443AF227B4676FA122CB7191&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,22|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d22&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d92CE58A6991267C1E6F28C23DC9C03F5CF7E0C7A.77E9DBA8D81F681587D68E2C9EF942DAA37D8461&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,35|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d35&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d92E5A471515BC4145F258D67C6E52F7CA0FA2530.73516C4866808CD98769225F3623A93613B65F1E&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,59|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d59&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d66DCB19D441D9742A4D21F1A08CDF488C81F728D.1864D7646337ED87C9A82951A0D524B6B3CEF451&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,34|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d34&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d1837C0B9C77AF259371C0239C7B56C68C43B86A0.68E22AF960C1C023033FD24D1138AFBE91CD02D3&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,18|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d18&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d9208D71BE0BCBE4B3DF1E7B922159C3BE921FA05.2A991F268E18F480929B6A98B107468601A55535&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18,43|https://r13---sn-hpa7ln7k.c.docs.google.com/videoplayback?requiressl\u003dyes&id\u003d1089c9d5a380c541&itag\u003d43&source\u003dwebdrive&app\u003dtexmex&ip\u003d5.0.148.212&ipbits\u003d8&expire\u003d1455596566&sparams\u003drequiressl,id,itag,source,ip,ipbits,expire&signature\u003d5720BE679324A8AE30BA464F81AE61CB6A551C1.69D6E187577E285BF9C2BF0415AD929EFA212D45&key\u003dck2&mm\u003d30&mn\u003dsn-hpa7ln7k&ms\u003dnxu&mt\u003d1455582034&mv\u003dm&pl\u003d18"] ,[
这并没有你在其中寻找的任何字符串......
好的，现在你想知道为什么拆分整个页面会给你带来疯狂的结果，而且因为split（）需要一个 regex 参数，而不仅仅是一个String。一根管子＆＃39; |＆＃39;是无效的正则表达式，使用＆＃34; \ |＆＃34;相反（转义特殊字符）。 https://docs.oracle.com/javase/7/docs/api/java/lang/String.html#split(java.lang.String)