Jackson JSON + Java Generics get LinkedHashMap

The following works and as per StaxMan’s advice no longer uses the deprecated static collectionType() method.

public class SoApp
{

   /**
    * @param args
    * @throws Exception
    */
   public static void main(String[] args) throws Exception
   {
      System.out.println("Hello World!");

      String s = "[{\"user\":\"TestCity\",\"role\":\"TestCountry\"},{\"user\":\"TestCity\",\"role\":\"TestCountry\"}]";
      StringReader sr = new StringReader("{\"user\":\"TestCity\",\"role\":\"TestCountry\"}");
      //UserRole user = mapper.readValue(sr, UserRole.class);

      mapJsonToObjectList(s,UserRole.class);

   }

   protected static <T> List<T> mapJsonToObjectList(String json, Class<T> clazz) throws Exception
   {
      List<T> list;
      ObjectMapper mapper = new ObjectMapper();
      System.out.println(json);
      TypeFactory t = TypeFactory.defaultInstance();
      list = mapper.readValue(json, t.constructCollectionType(ArrayList.class,clazz));

      System.out.println(list);
      System.out.println(list.get(0).getClass());
      return list;
   }
}

…

public class UserRole{

   private String user;
   private String role;

   public void setUser(String user) {
       this.user = user;
   }

   public void setRole(String role) {
       this.role = role;
   }

   public String getUser() {
       return user;
   }

   public String getRole() {
       return role;
   }

   @Override
   public String toString()
   {
      return "UserRole [user=" + user + ", role=" + role + "]";
   }
   
}

output…

 Hello World!
[{"user":"TestCity","role":"TestCountry"},{"user":"TestCity","role":"TestCountry"}]
[UserRole [user=TestCity, role=TestCountry], UserRole [user=TestCity, role=TestCountry]]
class com.test.so.fix.UserRole