Java字符串高效转换为Map：处理含逗号值的健壮方案

import java.util.Arrays;
import java.util.Map;
import java.util.stream.Collectors;

public class StringToMapConverter {

    /**
     * 将特定格式的字符串转换为Map<String, String>。
     * 该字符串格式为："\"Key\":\"Value\",\"Key2\":\"Value with, comma\""
     * 能够处理值中包含逗号的情况。
     *
     * @param mapAsString 待转换的字符串
     * @return 转换后的Map<String, String>
     */
    public static Map<String, String> toMap(String mapAsString) {
        // 1. 移除字符串最外层的双引号（如果存在）
        // 例如："\"Id\":\"1\",\"Name\":\"Bob\"" -> "Id\":\"1\",\"Name\":\"Bob"
        String innerString = mapAsString.substring(1, mapAsString.length() - 1);

        // 2. 使用"\","作为分隔符，将字符串分割成独立的键值对字符串数组
        // 例如："Id\":\"1\",\"Name\":\"Bob" -> ["Id\":\"1", "Name\":\"Bob"]
        return Arrays.stream(innerString.split("\",\""))
                     // 3. 对每个键值对字符串，使用"\":\""作为分隔符，分割出键和值
                     // 例如："Id\":\"1" -> ["Id", "1"]
                     .map(entryAsString -> entryAsString.split("\":\""))
                     // 4. 将分割后的键值对数组转换为Map的Entry，并收集到Map中
                     // entryAsArray[0] 是键，entryAsArray[1] 是值
                     .collect(Collectors.toMap(
                             entryAsArray -> entryAsArray[0], // 键
                             entryAsArray -> entryAsArray[1]  // 值
                     ));
    }

    public static void main(String[] args) {
        // 示例1：值不含逗号
        var string0 = "\"Id\":\"1\",\"Name\":\"Bob\",\"Notes\":\"Likes watching movies\"";
        // 示例2：值含逗号
        var string1 = "\"Id\":\"1\",\"Name\":\"Bob\",\"Notes\":\"Likes watching movies, playing video games\"";
        // 示例3：更复杂的值，包含多个逗号
        var string2 = "\"Item\":\"Laptop\",\"Spec\":\"CPU: i7, RAM: 16GB, SSD: 512GB\",\"Price\":\"1200.50\"";

        System.out.println("--- 示例1 ---");
        System.out.println("原始字符串: " + string0);
        System.out.println("转换结果: " + toMap(string0)); // 输出: {Id=1, Notes=Likes watching movies, Name=Bob}

        System.out.println("\n--- 示例2 ---");
        System.out.println("原始字符串: " + string1);
        System.out.println("转换结果: " + toMap(string1)); // 输出: {Id=1, Notes=Likes watching movies, playing video games, Name=Bob}

        System.out.println("\n--- 示例3 ---");
        System.out.println("原始字符串: " + string2);
        System.out.println("转换结果: " + toMap(string2)); // 输出: {Item=Laptop, Spec=CPU: i7, RAM: 16GB, SSD: 512GB, Price=1200.50}
    }
}

--- 示例1 ---
原始字符串: "Id":"1","Name":"Bob","Notes":"Likes watching movies"
转换结果: {Id=1, Notes=Likes watching movies, Name=Bob}

--- 示例2 ---
原始字符串: "Id":"1","Name":"Bob","Notes":"Likes watching movies, playing video games"
转换结果: {Id=1, Notes=Likes watching movies, playing video games, Name=Bob}

--- 示例3 ---
原始字符串: "Item":"Laptop","Spec":"CPU: i7, RAM: 16GB, SSD: 512GB","Price":"1200.50"
转换结果: {Item=Laptop, Spec=CPU: i7, RAM: 16GB, SSD: 512GB, Price=1200.50}