如何在Java中的.(点)之前和/(最后一个)后获取字符串? [英] How to get string before .(dot) and after /(last) slash in Java?

问题描述

我有一个像这样的字符串:

I have a string like this:

"core/pages/viewemployee.jsff"

从此代码中，我需要获取"viewemployee".如何使用Java获得此信息?

From this code, I need to get "viewemployee". How do I get this using Java?

推荐答案

假设您已将该字符串保存在名为 myString 的变量中.

Suppose that you have that string saved in a variable named myString.

String myString = "core/pages/viewemployee.jsff";
String newString = myString.substring(myString.lastIndexOf("/")+1, myString.indexOf("."));      

但是在此操作中，您需要先进行相同的控制，然后再执行 substring ，因为如果没有这些字符，您将从 lastIndexOf()或 indexOf()一个"-1"，它将中断您的 substring 调用.

But you need to make same control before doing substring in this one because, if there aren't those characters you will get from lastIndexOf(), or indexOf() a "-1" that will break your substring invocation.

我建议您寻找 Javadoc文档.

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