如何使用Java分隔符模式?

I'm trying to figure out how to use delimiter patterns in Java. I have tried googling and searching stack overflow but I can't find anything that answers my questions. How do you set patterns for useDelimiter? I'm trying to set a delimiter that separates text once it finds < and delimits to >. So in a string of text "this is <my> text" it will separate "this is ", "<my>", "text". I tried:

我想弄明白如何在Java中使用分隔符模式。我尝试过搜索和搜索stack overflow，但是我找不到任何能回答我的问题的东西。如何为useDelimiter设置模式?我试图设置一个分隔符，它在发现 <并将其递归到> 时分隔文本。在一个文本字符串中"this is text"它会将"this is " " " "和"text"分开。我试着:

src.useDelimiter("<->");

and many other combinations. I see people using [] and ^, but I don't know what this means. Is there some guide for making these patterns?

和许多其他的组合。我看到人们使用[]和^,但是我不知道这意味着什么。制作这些图案有什么指导吗?

1 个解决方案

#1

src.useDelimiter(" (?=<)|(?<=>) ")

Pattern A(?=B) matches A followed by B, but matches only A.

模式A(?=B)匹配后面的B，但只匹配A。

Pattern (?<=A)B matches A followd by B, but matches only B.

模式(?<=A)B与B匹配，但只匹配B。

See Special constructs (named-capturing and non-capturing) in https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html

参见https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html中的特殊构造(命名捕获和非捕获)

#1

src.useDelimiter(" (?=<)|(?<=>) ")