пробовал выводить результаты и промежуточные результаты, всё круто, но валидатор не хочет,
package com.javarush.task.task33.task3304;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.io.StringWriter;
/*
Конвертация из одного класса в другой используя JSON
*/
public class Solution {
public static void main(String[] args) throws IOException {
Second s = (Second) convertOneToAnother(new First(), Second.class);
First f = (First) convertOneToAnother(new Second(), First.class);
// System.out.println("second " + s.getClass().getSimpleName());
// System.out.println("first " + f.getClass().getSimpleName());
}
public static Object convertOneToAnother(Object one, Class resultClassObject) throws IOException {
ObjectMapper mapper = new ObjectMapper();
StringWriter writer = new StringWriter();
mapper.writeValue(writer, one);
String oldName = one.getClass().getSimpleName().toLowerCase();
String newName = resultClassObject.getSimpleName().toLowerCase();
return mapper.readValue(writer.toString().replace(oldName, newName), resultClassObject);
}
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "className")
@JsonSubTypes(@JsonSubTypes.Type(value = First.class, name = "first"))
@JsonAutoDetect
public static class First {
public int i;
public String name;
}
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "className")
@JsonSubTypes(@JsonSubTypes.Type(value = Second.class, name = "second"))
@JsonAutoDetect
public static class Second {
public int i;
public String name;
}
}