java - Split a String In Java against the split rule?

Question

I have a string like this:

String str="\"myValue\".\"Folder\".\"FolderCentury\"";

Is it possible to split the above string by . but instead of getting three resulting strings only two like:

columnArray[0]= "myValue"."Folder";
columnArray[1]= "FolderCentury";

Or do I have to use an other java method to get it done?

Answer 1

尝试这个。

     String s = "myValue.Folder.FolderCentury";
     String[] a = s.split(java.util.regex.Pattern.quote("."));

嗨程序员/ Yannish，

首先 split(".") 将不起作用，这不会返回任何结果。我认为 java 字符串拆分方法不适用于 . 分隔符，所以请尝试 java.util.regex.Pattern.quote(".") 而不是 split(".")

Answer 2

如果您要解决的问题确实非常具体，您甚至可以完全不使用正则表达式匹配：

int lastDot = str.lastIndexOf(".");
columnArray[0] = str.substring(0, lastDot);
columnArray[1] = str.substring(lastDot + 1);

Answer 3

正如我在原始帖子（此处）上发布的那样，下一个代码：

   String input = "myValue.Folder.FolderCentury";
   String regex = "(?!(.+\\.))\\.";
   String[] result=input.split(regex);
   System.out.println("result: "+Arrays.toString(result));

产生所需的输出（具有两个值的数组）：

result: [myValue.Folder, FolderCentury]