spring boot - how to avoid “Failed to instantiate [java.util.List]: Specified class is an interface” in HTTP controller handler?

Question

In my spring boot REST API application, I need to handle HTTP POST by accepting a strongly-typed list as my input:

@RestController
public class CusttableControll         


        

Answer 1

Try to add RequestBody annotation to your method definition

@RequestMapping(value="/custtable/update", method=RequestMethod.POST)
@ResponseBody
public String updateCusttableRecords(@RequestBody List customers) {
    //Method body 
}