Consider the following Java class where the setter for the author property accepts the values as varargs.
java
class Book {
private String[] author;
public String[] getAuthor() {
return this.author;
}
public void setAuthor(String... author) {
this.author = author;
}
}If you pass a single value of the author as follows, Jackson will throw an error.
json
{
"author": "Jenny McLachlan"
}To enable Jackson accept a single value as an array, you can use @JsonFormat annotation as follows.
java
class Book {
@JsonFormat(with = Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY)
private String[] author;
// getters, setters, etc.
}