您可以使用Jackson Mr Bean模块,该模块正是您想要的。
要使用它,只需下载特定的依赖项并将其设置为基础
ObjectMapper实例的模块即可:
import java.io.IOException;import java.util.List;import com.fasterxml.jackson.core.type.TypeReference;import com.fasterxml.jackson.databind.ObjectMapper;import com.fasterxml.jackson.module.mrbean.MrBeanModule;public class AbstractPojosExample { public interface Person { String getName(); int getAge(); Address getAddress(); default String asString() { return String.format("%s, %d, %s", this.getName(), this.getAge(), this.getAddress().asString()); } } public interface Address { String getStreet(); String getCity(); default String asString() { return String.format("%s, %s", this.getStreet(), this.getCity()); } } private void run() throws IOException { ObjectMapper mapper = new ObjectMapper(); mapper.registerModule(new MrBeanModule()); String json = "[ { "name": "John", "age": 23, " + ""address": { "street": "1001 5th Ave", "city": "New York" } }, " + "{ "name": "Jean Jacques", "age": 26 , " + ""address": { "street": "1001 Champs Elysees Blvd", "city": "Paris" } }, " + "{ "name": "Oscar Ruben", "age": 54, " + ""address": { "street": "1001 9th July Ave", "city": "Buenos Aires" } } ]"; System.out.println(json); List<Person> people = mapper.readValue(json, new TypeReference<List<Person>>() {}); people.stream().map(Person::asString).forEach(System.out::println); } public static void main(String[] args) throws IOException { AbstractPojosExample example = new AbstractPojosExample(); example.run(); }}对于给定的json:
[ { "name": "John", "age": 23, "address": { "street": "1001 5th Ave", "city": "New York" } }, { "name": "Jean Jacques", "age": 26, "address": { "street": "1001 Champs Elysees Blvd", "city": "Paris" } }, { "name": "Oscar Ruben", "age": 54, "address": { "street": "1001 9th July Ave", "city": "Buenos Aires" } }]上面的小程序产生以下输出:
John, 23, 1001 5th Ave, New YorkJean Jacques, 26, 1001 Champs Elysees Blvd, ParisOscar Ruben, 54, 1001 9th July Ave, Buenos Aires



