Java 无法按我想要的方式拆分字符串

在我的Java应用程序中，我有一个很长的JSON字符串，其中包含我想要提取的数据

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我想提取的是字符串的对象部分（括号之间），在这种形式下，

“56”：[“81”，3，“0”，“0”，“0”，“0”，“4754”，“M”，“1]

，并从中获取所有这些数据：

“81”，3，“0”，“0”，“0”，“4754”，“M”，“1”，并能够访问它们的号码

为此，我尝试了以下方法：

for(int i = 1; i > 0; i++) {
    String d;
    try {
        d = data.split("\"" + i + "\"\\:\\[")[1];
        d = d.split("\\]")[0];
    } catch(Exception e) {
        e.printStackTrace();
        System.out.println("quit");
        break;
    }
}

问题是我得到了一个数组越界异常，一个insta从这个
数据中退出。split（“\”+I+“\”\“\ \ \ \ \：\ \[”[1]
。我猜我把正则表达式搞砸了，但我真的不知道在哪里。谢谢你的帮助。
JSON数据应该用一个，而不是正则表达式或任何其他类型的低级字符串处理代码来提取。
JSON数据应该用一个，而不是正则表达式或任何其他类型的低级字符串处理代码来提取。
你永远不会退出FOR语句，因为它没有上限

对于（int i=1；i>0；i++）

只要“i>0”，FOR语句将继续运行，并且您将i从1开始，并不断递增，因此它永远不会小于或等于零

如果可以使用array.length或其他方法获取数组大小，并将FOR语句更改为：

对于（int i=1；i>array.length；i++）

这可能会解决问题。
看起来您永远不会退出FOR语句，因为它缺少上限

对于（int i=1；i>0；i++）

只要“i>0”，FOR语句将继续运行，并且您将i从1开始，并不断递增，因此它永远不会小于或等于零

如果可以使用array.length或其他方法获取数组大小，并将FOR语句更改为：

对于（int i=1；i>array.length；i++）

这可能会解决问题。
最好使用JSON Java库。它会为您简化解析过程。下面是一个示例，说明如何提取所需的最后一个数组并将其所有值打印到控制台

final JSONArray root = new JSONArray(YOUR_JSON_STRING);

final JSONObject numData = root.getJSONObject(1);
final JSONArray numArray = numData.getJSONArray("56");

for (int i = 0; i < numArray.length(); ++i) {
  if (i == 1 || i == 11)
      System.out.print(numArray.getInt(i)+",");
  else
      System.out.print(numArray.getString(i)+",");
}
// prints: "81",3,"0","","","","","0","","4754","M",1,

final JSONArray root=新的JSONArray（您的_JSON_字符串）；
最终JSONObject numData=root.getJSONObject（1）；
final JSONArray numArray=numData.getJSONArray（“56”）；
对于（int i=0；i

参考：

最好使用JSON Java库。它将为您简化解析过程。下面是一个示例，说明如何提取所需的最后一个数组并将其所有值打印到控制台

final JSONArray root = new JSONArray(YOUR_JSON_STRING);

final JSONObject numData = root.getJSONObject(1);
final JSONArray numArray = numData.getJSONArray("56");

for (int i = 0; i < numArray.length(); ++i) {
  if (i == 1 || i == 11)
      System.out.print(numArray.getInt(i)+",");
  else
      System.out.print(numArray.getString(i)+",");
}
// prints: "81",3,"0","","","","","0","","4754","M",1,

final JSONArray root=新的JSONArray（您的_JSON_字符串）；
最终JSONObject numData=root.getJSONObject（1）；
final JSONArray numArray=numData.getJSONArray（“56”）；
对于（int i=0；i

参考：

看起来他也从来没有退出过FOR循环，这可能会导致OOB异常。是的，你诊断OP的实际问题时得到+1。看起来他也从来没有退出过FOR循环，这可能会导致OOB异常。是的，你诊断OP的实际问题时得到+1。谢谢老兄。帮了我很多忙。谢谢老兄。帮助了我经常出去。