在Jackson序列化后,System.out搞砸了

Question

我一直在尝试将一些对象序列化为System.out(用于调试).我打电话的时候

final JsonSerializer serializer = new JsonSerializer();
serializer.serialize( System.out, myObj );
System.out.println("done");

它打印出json,但"完成"永远不会被打印出来.调试这些行,清楚地显示第3行被执行,但输出从未显示.

这是杰克森的错误,还是我做错了什么？

编辑:

public class JsonSerializer
{

private ObjectMapper getConfiguredObjectMapper()
{
  final ObjectMapper mapper = new ObjectMapper();
  mapper.enable( SerializationConfig.Feature.INDENT_OUTPUT );
  mapper.setVisibility( JsonMethod.FIELD, Visibility.ANY );
  mapper.setVisibility( JsonMethod.GETTER, Visibility.NONE );
  mapper.configure( SerializationConfig.Feature.AUTO_DETECT_GETTERS, false );
  mapper.configure( SerializationConfig.Feature.AUTO_DETECT_IS_GETTERS, false );
  mapper.configure( SerializationConfig.Feature.AUTO_DETECT_FIELDS, false );



  final SimpleModule module = new SimpleModule( "ConnectorSerialization", new Version( 0, 1, 0, null ) );
  module.addSerializer( new InputConnectorSerializer() );
  module.addSerializer( new OutputConnectorSerializer() );
  module.addSerializer( new StateSerializer() );
  mapper.registerModule( module );

  return mapper;
  }


public void serialize( final OutputStream outputStream, final Object root )
{


  final ObjectMapper mapper = getConfiguredObjectMapper();


  try
  {
     mapper.writeValue( outputStream, root );

  }
  catch (final JsonGenerationException e)
  {
     // TODO Auto-generated catch block
     e.printStackTrace();
  }
  catch (final JsonMappingException e)
  {
     // TODO Auto-generated catch block
     e.printStackTrace();
  }
  catch (final IOException e)
  {
     // TODO Auto-generated catch block
     e.printStackTrace();
  }

}
}

Answer 1

由于其他用户的所有答案都被删除了,我将回答我自己的问题.感谢用户声明这是jackson自动关闭输入流的问题.

解决方案是添加JsonGenerator.Feature.AUTO_CLOSE_TARGET到配置中,并将其设置为false:

mapper.configure(JsonGenerator.Feature.AUTO_CLOSE_TARGET, false);