java 反转（解析输出）的 Arrays.toString(int[])
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/456367/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Reverse (parse the output) of Arrays.toString(int[])
提问by Thilo
Is there in the JDK or Jakarta Commons (or anywhere else) a method that can parse the output of Arrays.toString, at least for integer arrays?
JDK 或 Jakarta Commons（或其他任何地方）中是否有一种方法可以解析 Arrays.toString 的输出，至少对于整数数组？
int[] i = fromString(Arrays.toString(new int[] { 1, 2, 3} );
回答by Sam
Pretty easy to just do it yourself:
自己做很容易：
public class Test {
public static void main(String args[]){
int[] i = fromString(Arrays.toString(new int[] { 1, 2, 3} ));
}
private static int[] fromString(String string) {
String[] strings = string.replace("[", "").replace("]", "").split(", ");
int result[] = new int[strings.length];
for (int i = 0; i < result.length; i++) {
result[i] = Integer.parseInt(strings[i]);
}
return result;
}
}
回答by Anderson
A sample with fastjson, a JSON library:
一个带有 fastjson 的示例，一个 JSON 库：
String s = Arrays.toString(new int[] { 1, 2, 3 });
Integer[] result = ((JSONArray) JSONArray.parse(s)).toArray(new Integer[] {});
Another sample with guava:
番石榴的另一个样本：
String s = Arrays.toString(new int[] { 1, 2, 3 });
Iterable<String> i = Splitter.on(",")
.trimResults(CharMatcher.WHITESPACE.or(CharMatcher.anyOf("[]"))).split(s);
Integer[] result = FluentIterable.from(i).transform(Ints.stringConverter())
.toArray(Integer.class);
回答by André
You can also use split/join from Apache Commons' StringUtils
您还可以使用 Apache Commons 的StringUtils 中的split/join
