曖昧參照重載定義當在Java庫調用方法

Question

import com.alibaba.fastjson.JSON 

object test { 
    def main(args: Array[String]) = { 
    val map = new util.HashMap[CharSequence, CharSequence]() 
    map.put("123", "22333") 
    map.put("test", null) 
    val ret = JSON.toJSONString(map) 
    println(ret) 
    } 
} 

的toJSONString functiones：

錯誤：

Error:ambiguous reference to overloaded definition,both method toJSONString in object JSON of 
type (x$1: Any, x$2: com.alibaba.fastjson.serializer.SerializerFeature*)String 
and method toJSONString in object JSON of 
type (x$1: Any)String 
match argument types (java.util.HashMap[CharSequence,CharSequence]) 
val ret = JSON.toJSONString(map) 

Answer 1

出於某種原因，Scala的超載邏輯不匹配的Java邏輯。你必須這樣稱呼它：

JSON.toJSONString(map, SerializerFeature.PrettyFormat) 

祝你有愉快的一天！