检查String是否与Java中的特定MessageFormat匹配？

我有像这样的MessageFormat;

final MessageFormat messageFormat = new MessageFormat("This is token one {0}, and token two {1}");

我只是想知道我是否有类似的字符串;

String shouldMatch = "This is token one bla, and token two bla";
String wontMatch = "This wont match the above MessageFormat";

如何检查上述字符串是否是使用messageFormat创建的？即他们匹配messageFormat？

非常感谢！

解决方法:

您可以使用Regular Expressions和Pattern和Matcher课程来完成此操作.
一个简单的例子：

Pattern pat = Pattern.compile("^This is token one \\w+, and token two \\w+$");
Matcher mat = pat.matcher(shouldMatch);
if(mat.matches()) {
   ...
}

正则表达式的解释：

^ = beginning of line
\w = a word character. I put \\w because it is inside a Java String so \\ is actually a \
+ = the previous character can occur one ore more times, so at least one character should be there
$= end of line

如果要捕获标记,请使用以下大括号：

Pattern pat = Pattern.compile("^This is token one (\\w+), and token two (\\w+)$");

您可以使用mat.group(1)和mat.group(2)检索组.

标签：java,messageformat
来源： https://codeday.me/bug/20190825/1720550.html