如何使用 scala 以有效的方式拆分键和值之类的字符串：

Question

如何使用 Scala 以高效的方式拆分键和值等字符串：

我想将下面的 emp 字符串拆分成键值对。

var emp = "Map(employees -> [{"id":"100","name":"Alex","state":"MA"},{"id":"101","name":"Agni","state":"CA"},{"id":"102","name":"Sharo","state":"TX"}])"

需要像下面这样解析:

key: employees 
value : [{"id":"100","name":"Alex","state":"MA"},{"id":"101","name":"Agni","state":"CA"},{"id":"102","name":"Sharo","state":"TX"}]

Answer 1

此代码将字符串解析为另外 2 个（键和值）：

object Parser extends App {
  
    val emp = "Map(employees -> {\"id\":\"100\",\"name\":\"Alex\",\"state\":\"MA\"},{\"id\":\"101\",\"name\":\"Agni\",\"state\":\"CA\"},{\"id\":\"102\",\"name\":\"Sharo\",\"state\":\"TX\"}])"
    
    val key = emp.substring(emp.indexOf("(") + 1, emp.indexOf(" -> "))
    val value = emp.substring(emp.indexOf(" -> ") + 4, emp.indexOf(")"))

    println(s"key: $key");
    println(s"value: $value")
}

如何使用 scala 以有效的方式拆分键和值之类的字符串：

How can I split string like key and value using scala in efficient way:

scala