Scala反射错误java

Question

I'm trying to use scala.reflect to get the class attributes and to write them XML. However I'm getting a strange error

 def toXml(): xml.Elem = {
<node>{
  for(field: scala.reflect.Field <- getClass().getDeclaredFields()) {
    val tmpString = "<" + field.name + ">" + this.getClass().getMethods.find(_.getName == field.name).get.invoke(this) + "</" + field.name + ">"
    print(tmpString)
  }
 }</node>
}

The error:

error: type mismatch;
found   : scala.reflect.Field => Unit
required: java.lang.reflect.Field => ?
for(field: scala.reflect.Field <- getClass().getDeclaredFields()) {

So even if I explicitly use scala.reflect.Field, it still is viewed as java.lang.reflect.Field?

Answer 1

getClass().getDeclaredFields() returns java.lang.reflect.Field objects. Unless you find a way to convert between these two classes, you cannot declare them as scala.reflect.Field and expect them to work.

EDIT: fix for your code:

for(field: java.lang.reflect.Field <- getClass().getDeclaredFields()) {