Spring boot Postmapping not working for request body with List

Question

I am trying to send array list JSON as request body in spring boot project but it gives me error. It it working fine if i just use json object.

I need to send request something like below.

[
    {
        "name":"abc"
.....
    }
]

Controller:

@PostMapping("/addr")
public List<String> getAddr(@RequestBody List<Address> addr)

Address.java

@Data
@Builder
@AllArgsConstructor
@NoArgConstructor
public class Address {
private String name;
....
}

when i hit this API it gives me following error Error:

No primary or default constructor found for interface java.util.List] 

Please suggest how to fix?

Answer 1

This message implies that you are trying to use a default constructor for java.util.List.

Something like

new List();

If that's the case, try using ArrayList for example, because List is the interface, so you can only instanciate the implementation classes of List.