Errors binding onto object 'command'; nested exception is org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors Field error in object 'command' on field 'id': rejected value [$art.id]; codes [typeMismatch.command.id,typeMismatch.id,typeMismatch.java.lang.Integer,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [command.id,id]; arguments []; default message [id]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.lang.Integer' for property 'id'; nested exception is java.lang.NumberFormatException: For input string: "$art.id"]