java在字符串中插入附加值

Question

我有这个

var message = "You purchased $name on $date"

还有这样一种方法，它可以用紧靠着$date的单词替换$sign的每个实例，例如$date将是querySnapshot.get(date)

public static void main(String[] args) {
    String message  = "You purchased $name on $date";
    String[] arr = message.split(" ");

    for (int i = 0; i < arr.length; i++) {
        String s = arr[i];
        if (s.contains("$")) {
            arr[i] = "+ querySnapshot.get(" + "\"" + s.substring(1) + "\"" + ")";
        }
    }

    System.out.println(String.join(" ", arr));

}

这将打印：“您在+querySnapshot.get（“日期”）上购买了+querySnapshot.get（“名称”）”

现在为了使Kotlin能够向其中添加动态数据，我需要添加${}，因为它应该成为${querySnapshot.get（date）}

有人能帮我修改代码吗

我需要的是这样的：

"   You purchased + ${ querySnapshot.get("name") }  on + ${querySnapshot.get("date") } "

Answer 1

按如下方式操作：

public class Main {
    public static void main(String[] args) {
        String message = "You purchased $name on $date";
        String[] arr = message.split(" ");

        for (int i = 0; i < arr.length; i++) {
            String s = arr[i];
            if (s.contains("$")) {
                arr[i] = "+ ${querySnapshot.get(" + "\"" + s.substring(1) + "\"" + ")}";
            }
        }

        System.out.println(String.join(" ", arr));
    }
}

输出：

You purchased + ${querySnapshot.get("name")} on + ${querySnapshot.get("date")}