如何在Java中第三次出现“/”之前拆分字符串

我有：

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

但我只需要：

/xxx/yyy/aaa/bbb/abc.xml (or)
/xxx/yyy/aaa/abc.xml (or)
/xxx/yyy/aaa/bbb/ccc/abc.xml

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

如何在Java中实现这一点？

---

提前谢谢

您可以使用String.split/来拆分和合并前2个元素：

/xxx/yyyy

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

您可以使用这个类

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

您的问题的示例代码段

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

或者可以迭代使用indexOf方法

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}

    String str = "/xxx/yyy/aaa/bbb/abc.xml";

    int index = StringUtils.ordinalIndexOf(str , "/" , 3);

    String result = str.substring(0,index);

---

我用了这个，它对我很管用。

提前谢谢不行；让我们看看你尝试了什么，失败了什么。所以这不是一个代码编写服务。欢迎使用Stackoverflow！请访问并查看。有了这两个，你可以简单地完成它，我会让你做的。试试str.replaceAll/[^/]*{2}.*$1。

for(String string: input){
  String[] splitedStrings = string.split("/");
  StringBuilder result = new StringBuilder("/");
  for(int i = 1; i < 3 && i < splitedStrings.length; i++){
    result.append(splitedStrings[i]).append("/");
  }
  System.out.println("Result: " + result.toString());
}