I try to handle request
{
"city": "city",
"date": "2020-08-26T12:15:54.428Z",
"time": {
"sum":"123"
}
}
My goal is to process this request. The trick is that I try to use Builder pattern with optional parameter(according to Effective Java. Joshua Bloch). As I understand I dont have to send all time values. Only sum is required. I try to send Sport object in my RequestBody to my controller by Postman.
So I created POJO class for my Sport:
@Entity
@Table(name = "sport")
@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class Sport {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "date")
private Date date;
@Column(name = "city")
private City city;
@Type(type = "time")
private Time time;
}
and Time builder:
package pl.project.model;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
@JsonDeserialize(builder = Time.Builder.class)
public class Time {
private final String bike;
private final String run;
private final String sum;
private Time(Builder builder) {
bike = builder.bike;
run = builder.run;
sum = builder.sum;
}
@JsonPOJOBuilder(withPrefix = "")
public static class Builder {
String bike = "-";
String run = "-";
final String sum;
Builder(String sum) {
this.sum = sum;
}
Builder bike(String bike) {
this.bike = bike;
return this;
}
Builder run(String run) {
this.run = run;
return this;
}
Time build() {
return new Time(this);
}
}
}
And still getting error:
JSON parse error: Cannot construct instance of `pl.project.model.Time$Builder` (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `pl.project.model.Time$Builder` (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator)\n at [Source: (PushbackInputStream); line: 14, column: 7] (through reference chain: pl.project.model.Sport[\"time\"])"
I tried many stackoverflow solutions but nothing works for me.
Does anybody could help me?
Aucun commentaire:
Enregistrer un commentaire