如何从 java 中的字符串中删除一些单词
[英]how to remove some words from a string in java
问题描述
我在 android 平台上工作，我使用字符串变量来填充 html 内容，之后我想删除一些单词（具体来说 - 删除<head>..</head>标签之间的任何单词。有什么解决方案吗？
3 个解决方案
解决方案1
4 已采纳 2011-05-31 10:20:07
String newHtml = oldHtml.replaceFirst("(?s)(<head>)(.*?)(</head>)","$1$3");
解释：
oldHtml.replaceFirst(" // we want to match only one occurrance
(?s) // we need to turn Pattern.DOTALL mode on
// (. matches everything, including line breaks)
(<head>) // match the start tag and store it in group $1
(.*?) // put contents in group $2, .*? will match non-greedy,
// i.e. select the shortest possible match
(</head>) // match the end tag and store it in group $3
","$1$3"); // replace with contents of group $1 and $3
解决方案2
3 2011-05-31 10:24:44
另一个解决方案:)
String s = "Start page <head> test </head>End Page";
StringBuilder builder = new StringBuilder(s);
builder.delete(s.indexOf("<head>") + 6, s.indexOf("</head>"));
System.out.println(builder.toString());
解决方案3
0 2011-05-31 10:19:57
尝试：
String input = "...<head>..</head>...";
String result = input.replaceAll("(?si)(.*<head>).*(</head>.*)","$1$2");
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