如何解析可以是对象或字符串的值-Java-Jackson

Question

I am using Jackson to deserialize some xml . My xml has a value that can be an object or a string. Here is my xml

<FormFieldHidden name="RequestTime">
  <DefaultValue>
    <DataSourceName>DataSourceCurrentTime</DataSourceName>
  </DefaultValue>
</FormFieldHidden>
<FormFieldHidden name="TradPtnrID">
  <DefaultValue>043355932</DefaultValue>
</FormFieldHidden>

Here is my java:

@JsonIgnoreProperties(ignoreUnknown = true)
public class Forms {

    public Form form;

    public Forms() {
      form = new Form();
    }

    public static class Form extends Asset {
      public String version;
      public String description;

    public List<Section> sections;

    }

    public static class Section {
      public String label;
      public int totalColumns;
    public List<FormFieldHidden> formFields;
    }

    public static class FormFieldHidden {
      public String defaultValue;
    }
}

How can I pull out the defaultValue whether it is an object or string?

Answer 1

I havent work with Jackson but maybe instanceof will help, in pseudocode

if (value instanceof Class){Class c=value;}
else{String s=value;}