如何使用嵌套组在Java中用正则表达式替换字符串

gstackoverflow 发表于 Dev

gstackoverflow

我有格式行

"123","45","{"VFO":[B501], "AGN":[605,B501], "AXP":[665], "QAV":[720,223R,251Q,496M,548A,799M]}","4"

它可以更长，但始终包含

"number","number","someValues","digit"

我需要将值包裹在someValues内并用引号引起来

用于测试字符串的预期结果应该是。

"123","45","{"VFO":["B501"], "AGN":["605","B501"], "AXP":["665"], "QAV":["720","223R","251Q","496M","548A","799M"]}","4"

请提出Java中最简单的解决方案。

聚苯乙烯

我的变体：

                        String valuePattern = "\\[(.*?)\\]";
                        Pattern valueR = Pattern.compile(valuePattern);
                        Matcher valueM = valueR.matcher(line);
                        List<String> list = new ArrayList<String>();
                        while (valueM.find()) {
                            list.add(valueM.group(0));
                        }
                        String value = "";
                        for (String element : list) {
                            element = element.substring(1, element.length() - 1);
                            String[] strings = element.split(",");
                            String singleGroup = "[";
                            for (String el : strings) {
                                singleGroup += "\"" + el + "\",";
                            }
                            singleGroup = singleGroup.substring(0, singleGroup.length() - 1);
                            singleGroup = singleGroup + "]";
                            value += singleGroup;
                        }
                        System.out.println(value);

法尔塔加因特克斯多

已编辑

好的，这是我找到的最短的方法，我认为它非常好用，除了逗号和括号（我必须手动添加...）之外，也许有人可以立即完成此操作，但我发现处理起来很棘手嵌套组的替换。

import java.util.*;
import java.lang.*;
import java.io.*;

Pattern p = Pattern.compile("(\\[(\\w+))|(,(\\w+))");
Matcher m = p.matcher("\"123\",\"45\",\"{\"VFO\":[B501], \"AGN\":[605,B501], \"AXP\":[665], \"QAV\":[720,223R,251Q,496M,548A,799M]}\",\"4\"");
StringBuffer s = new StringBuffer();
while (m.find()){
  if(m.group(2)!=null){
    m.appendReplacement(s, "[\""+m.group(2)+"\"");
  }else if(m.group(4)!=null){
    m.appendReplacement(s, ",\""+m.group(4)+"\"");
  }
}
m.appendTail(s);
print(s);