java - 在java中将String转换为int数组

Question

我有一个字符串:

String arr = "[1,2]";

ie "[1,2]" 就像一个单一的字符串。

如何在 java 中将此 arr 转换为 int 数组？

Answer 1

String arr = "[1,2]";
String[] items = arr.replaceAll("\\[", "").replaceAll("\\]", "").replaceAll("\\s", "").split(",");

int[] results = new int[items.length];

for (int i = 0; i < items.length; i++) {
    try {
        results[i] = Integer.parseInt(items[i]);
    } catch (NumberFormatException nfe) {
        //NOTE: write something here if you need to recover from formatting errors
    };
}