Question

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 - 删除<head>..</head>标记之间的任何单词。任何解决方案？

Answer 1

String newHtml = oldHtml.replaceFirst("(?s)(<head>)(.*?)(</head>)","$1$3");

说明：

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

Answer 2

另一种解决方案：）

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());

Answer 3

尝试：

String input = "...<head>..</head>...";
String result = input.replaceAll("(?si)(.*<head>).*(</head>.*)","$1$2");

如何从java中的字符串中删除一些单词

3 个答案: