在 JAVA 中删除最后一个斜杠后的字符串
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Remove string after last slash in JAVA
提问by Aybek Kokanbekov
I have a problem with removing everything after the last slash of URL in JAVA For instance, I have URL:
我在 JAVA 中删除 URL 的最后一个斜杠后的所有内容时遇到问题例如，我有 URL：
http://stackoverflow.com/questions/ask
n' I wanna change it to:
n' 我想把它改成：
http://stackoverflow.com/questions/
How can I do it.
我该怎么做。
采纳答案by Ruchira Gayan Ranaweera
You can try this
你可以试试这个
String str="http://stackoverflow.com/questions/ask";
int index=str.lastIndexOf('/');
System.out.println(str.substring(0,index));
回答by Suresh Atta
Try using String#lastIndexOf()
Returns the index within this string of the last occurrence of the specified character.
返回此字符串中最后一次出现的指定字符的索引。
String result = yourString.subString(0,yourString.lastIndexOf("/"));
回答by Sai Aditya
if (null != str && str.length > 0 )
{
int endIndex = str.lastIndexOf("/");
if (endIndex != -1)
{
String newstr = str.subString(0, endIndex); // not forgot to put check if(endIndex != -1)
}
}
回答by RCR
IF you want to get the last value from the uRL
如果您想从 uRL 中获取最后一个值
String str="http://stackoverflow.com/questions/ask";
System.out.println(str.substring(str.lastIndexOf("/")));
Result will be "/ask"
结果将是“/询问”
If you want value after last forward slash
如果你想要最后一个正斜杠后的值
String str="http://stackoverflow.com/questions/ask";
System.out.println(str.substring(str.lastIndexOf("/") + 1));
Result will be "ask"
结果将是“询问”
