在Spark中用作HashMap键时，Scala case类对象“key not found”

case class Person(name: String, age: Int)

val person1 = Person("Alice", 25)
val person2 = Person("Bob", 30)

val hashMap = new HashMap[Person, String]()
hashMap.put(person1, "Person 1")
hashMap.put(person2, "Person 2")

val result = hashMap.get(Person("Alice", 25))
println(result)  // 输出：Some(Person 1)

// 重写hashCode和equals方法
case class Person(name: String, age: Int) {
  override def hashCode(): Int = {
    val prime = 31
    var result = 1
    result = prime * result + name.hashCode()
    result = prime * result + age
    result
  }

  override def equals(obj: Any): Boolean = {
    if (this == obj) return true
    if (obj == null || getClass != obj.getClass) return false
    val other = obj.asInstanceOf[Person]
    name == other.name && age == other.age
  }
}