java - Returning error list in jersey rest service -

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in our project using rest service(jersey). in 1 of requirement return list of missing mandatory parameters client. right using exception mapper can return single error message,

public class mandatoryparametermissingexception extends runtimeexception {      private static final long serialversionuid = 1l;       public mandatoryparametermissingexception(string message) {         super(message);     }   public class mandatoryparammissingexceptionmapper implements exceptionmapper<mandatoryparametermissingexception> {      @override     public response toresponse(mandatoryparametermissingexception ex) {         errormessage errormessage = new errormessage(ex.getmessage(), 404, "document source:todo");         return response.status(status.not_found)                 .entity(errormessage)                 .build();     }  private string errormessage;     private int errorcode;     private string documentation;      public errormessage() {      }      public errormessage(string errormessage, int errorcode, string documentation) {         super();         this.errormessage = errormessage;         this.errorcode = errorcode;         this.documentation = documentation;     }

..getter setters

if find missing mandatory params, right doing like, 

if (emailid == null) {             throw new mandatoryparametermissingexception("email id missing");         }

could 1 please suggest best way enhance take list of error messages , pass client?

for issue created class called validationexception. validationexception contains list of validationerror.

there different kind of validationerror, example outofrangeerror, mandatoryparametererror , whatever need. validationerror contains specific attributes (all client needs create meaningful messagetext user) => mandatoryparametererror name of field, outofrangeerror name of field , allowed range.

on serverside there validators (in common package, client validation itself)... validators creating validationerrors during validation of data. if there validation errors, validationexception thrown. that's it. can give codesnippets...


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