@StaxManの回答の例
基本的に、モジュール(SimpleModule
)を作成し、デシリアライザーを追加して、このモジュールを登録する必要があります
final SimpleModule sm = new SimpleModule();
sm.addDeserializer(Date.class, new JsonDeserializer<Date>(){
@Override
public Date deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException {
try {
System.out.println("from my custom deserializer!!!!!!");
return new SimpleDateFormat("yyyy-MM-dd").parse(p.getValueAsString());
} catch (ParseException e) {
System.err.println("aw, it fails: " + e.getMessage());
throw new IOException(e.getMessage());
}
}
});
final CreationBean bean = JsonUtils.getMapper()
.registerModule(sm)
// .setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"))
.readValue("{\"dateCreation\": \"1995-07-19\"}", CreationBean.class);
ここに完全な例があります
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.module.SimpleModule;
/**
* @author elvis
* @version $Revision: $<br/>
* $Id: $
* @since 8/22/16 8:38 PM
*/
public class JackCustomDeserializer {
public static void main(String[] args) throws IOException {
final SimpleModule sm = new SimpleModule();
sm.addDeserializer(Date.class, new JsonDeserializer<Date>(){
@Override
public Date deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException {
try {
System.out.println("from my custom deserializer!!!!!!");
return new SimpleDateFormat("yyyy-MM-dd").parse(p.getValueAsString());
} catch (ParseException e) {
System.err.println("aw, it fails: " + e.getMessage());
throw new IOException(e.getMessage());
}
}
});
final CreationBean bean = JsonUtils.getMapper()
.registerModule(sm)
// .setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"))
.readValue("{\"dateCreation\": \"1995-07-19\"}", CreationBean.class);
System.out.println("parsed bean: " + bean.dateCreation);
}
static class CreationBean {
public Date dateCreation;
}
}