स्कैला प्ले जेसन पढ़ता है

Question

मेरे पास नीचे नमूना कोड है।

import play.api.libs.json._ 
import play.api.libs.functional.syntax._ 
import play.api.data.validation.ValidationError 
import play.api.libs.json.Reads._ 

case class Retailer(firstName:String,lastName:String,email:String,mobileNo:String,password:String) 
case class Business(name:String,preferredUrl:String,businessPhone:String,retailer:Retailer) 

object JsonTest { 
    val jsonValue = """ 
    { 
    "business": 
    { 
     "name":"Some Business Name", 
     "preferredUrl":"someurl", 
     "businessPhone":"somenumber", 
     "retailer": 
     { 
     "firstName":"Some", 
     "lastName":"One", 
     "email":"someone@somewhere.com", 
     "mobileNo":"someothernumber", 
     "password":"$^^HFKH*" 
     } 
    } 

    } 
    """ 
    def printJson ={ 

    implicit val rltRds = (
     (__ \ "firstName").read[String] ~ 
     (__ \ "lastName").read[String] ~ 
     (__ \ "email").read[String] ~ 
     (__ \ "mobileNo").read[String] ~ 
     (__ \ "password").read[String] 
    )(Retailer)  

    implicit val bsnsRds = (
     (__ \ "name").read[String] ~ 
     (__ \ "preferredUrl").read[String] ~ 
     (__ \ "businessPhone").read[String] ~ 
     (__ \ "retailer").read[Retailer](rltRds) 
    )(Business)  


    val buisness = Json.parse(jsonValue).validate[Business](bsnsRds) 
    val bus = new Business("Some Business","somebusinessurl","somenumber", new Retailer("Some","One","someone@somewhere.com","someothernumber","$^^HFKH*")) 
    //val json = Json.toJson(bus) 

    println(buisness) 
    } 




    def main(args: Array[String]): Unit = { 
    printJson 
    } 

} 

मैं Json प्रमाणीकरण त्रुटि मिलती है, जब मैं स्काला वस्तु में json (इस मामले में बिजनेस क्लास) पार्स करने के लिए प्रयास करें। कुंजी निकाल दिए जाते हैं: यदि मेरी json तरह

val jsonValue = """ 
    { 
     "name":"Some Business Name", 
     "preferredUrl":"someurl", 
     "businessPhone":"somenumber", 
     "retailer": 
     { 
     "firstName":"Some", 
     "lastName":"One", 
     "email":"someone@somewhere.com", 
     "mobileNo":"someothernumber", 
     "password":"$^^HFKH*" 
     } 
    } 
    """ 

ध्यान दें कि बाहरी ब्रैकेट "{" और "व्यापार" है त्रुटि है

हालांकि। मुझे एक जेएसयूसेफ मिलता है। मैं जेसन के लिए पहले मामले में रीड कैसे लिखूं? इसके अलावा, मैं इसे सामान्य तरीके से कैसे कर सकता हूं?

कृपया मदद करें। इसके बाद के संस्करण के लिए

implicit val bsnsRds = (
     (__ \ "business" \ "name").read[String] ~ 
     (__ \ "business" \ "preferredUrl").read[String] ~ 
     (__ \ "business" \ "businessPhone").read[String] ~ 
     (__ \ "business" \ "retailer").read[Retailer](rltRds) 
    )(Business) 

Answer 1

बस रास्ते में business कुंजी जोड़ने

implicit val bsnsRds = ({ 
    val business = (__ \ "business") 
    (business \ "name").read[String] ~ 
    (business \ "preferredUrl").read[String] ~ 
    (business \ "businessPhone").read[String] ~ 
    (business \ "retailer").read[Retailer](rltRds) 
})(Business) 

Answer 2

मामूली बदलाव: