Maven:
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-avro</artifactId>
<version>2.12.4</version>
</dependency>
Gradle:
implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-avro:2.12.4'
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.avro.AvroMapper;
import com.fasterxml.jackson.dataformat.avro.schema.AvroSchemaGenerator;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class AvroDataConverter {
public static void main(String[] args) {
List<Person> personList = new ArrayList<>();
ObjectMapper objectMapper = new ObjectMapper();
AvroMapper avroMapper = new AvroMapper();
try {
AvroSchemaGenerator gen = new AvroSchemaGenerator();
objectMapper.acceptJsonFormatVisitor(objectMapper.constructType(Person.class), gen);
org.apache.avro.Schema avroSchema = gen.getGeneratedSchema();
byte[] avroData = avroMapper.writer(avroSchema).writeValueAsBytes(personList);
List<Person> convertedPersonList = avroMapper.readerFor(Person.class).with(avroSchema).readValue(avroData);
for (Person person : convertedPersonList) {
System.out.println(person.getName() + " - " + person.getAge());
}
avroMapper.writer().writeValue(new File("person.avsc"), avroSchema);
} catch (IOException e) {
e.printStackTrace();
}
}
}
class Person {
private String name;
private int age;
public Person() {}
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
