在 Java 中将字符串拆分为 n 长度的块
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Splitting a string into n-length chunks in Java
提问by Jonik
Possible Duplicate:
Split string to equal length substrings in Java
可能的重复：
在 Java 中将字符串拆分为等长的子字符串
Given the following utility method I have:
鉴于我有以下实用方法：
/**
* Splits string <tt>s</tt> into chunks of size <tt>chunkSize</tt>
*
* @param s the string to split; must not be null
* @param chunkSize number of chars in each chuck; must be greater than 0
* @return The original string in chunks
*/
public static List<String> splitInChunks(String s, int chunkSize) {
Preconditions.checkArgument(chunkSize > 0);
List<String> result = Lists.newArrayList();
int length = s.length();
for (int i = 0; i < length; i += chunkSize) {
result.add(s.substring(i, Math.min(length, i + chunkSize)));
}
return result;
}
1) Is there an equivalent method in any common Java library(such as Apache Commons, Google Guava) so I could throw it away from my codebase? Couldn't find with a quick look. Whether it returns an array or a List of Strings doesn't really matter.
1)在任何常见的 Java 库（例如 Apache Commons、Google Guava ）中是否有等效的方法，以便我可以将它从我的代码库中扔掉？快速浏览找不到。它是返回数组还是字符串列表并不重要。
(Obviously I wouldn't add dependency to some huge framework just for this, but feel free to mention any common lib; maybe I use it already.)
（显然，我不会为此添加对某些大型框架的依赖，但可以随意提及任何常见的库；也许我已经使用了它。）
2) If not, is there some simpler and cleaner way to do this in Java?Or a way that is strikingly more performant? (If you suggest a regex-based solution, please also consider cleanness in the sense of readability for non regex experts... :-)
2）如果没有，在Java中是否有一些更简单，更干净的方法来做到这一点？还是一种性能明显更高的方式？（如果您建议基于正则表达式的解决方案，还请考虑非正则表达式专家在可读性方面的清洁度...... :-)
Edit: this qualifies as a duplicate of the question "Split string to equal length substrings in Java" because of this Guava solutionwhich perfectly answers my question!
编辑：这符合问题“在 Java 中将字符串拆分为相等长度的子字符串”的重复项，因为此番石榴解决方案完美地回答了我的问题！
采纳答案by Sean Patrick Floyd
You can do this with Guava's Splitter:
你可以用 Guava 的Splitter做到这一点：
Splitter.fixedLength(chunkSize).split(s)
...which returns an Iterable<String>.
...返回一个Iterable<String>.
Some more examples in this answer.
此答案中的更多示例。
回答by The Archetypal Paul
Mostly a duplicate of Split Java String in chunks of 1024 byteswhere the idea of turning it into a stream and reading N bytes at a time would seem to meet your need?
大多数情况下，Split Java String的副本以1024 字节的块为单位，其中将其转换为流并一次读取 N 个字节的想法似乎可以满足您的需要？
Here is a way of doing it with regex(which seems a bit of a sledgehammer for this particular nut)
这是使用正则表达式的一种方法（对于这个特定的坚果似乎有点大锤）
