Use 'Public' view by default for API serialization

src/main/java/de/thm/arsnova/config/AppConfig.java

@@ -18,11 +18,14 @@
 package de.thm.arsnova.config;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import de.thm.arsnova.ImageUtils;
 import de.thm.arsnova.connector.client.ConnectorClient;
 import de.thm.arsnova.connector.client.ConnectorClientImpl;
+import de.thm.arsnova.entities.serialization.CouchDbDocumentModule;
 import de.thm.arsnova.entities.serialization.CouchDbObjectMapperFactory;
+import de.thm.arsnova.entities.serialization.View;
 import de.thm.arsnova.socket.ARSnovaSocket;
 import de.thm.arsnova.socket.ARSnovaSocketIOServer;
 import de.thm.arsnova.web.CacheControlInterceptorHandler;
@@ -186,7 +189,9 @@ public class AppConfig extends WebMvcConfigurerAdapter {
 				.defaultViewInclusion(false)
 				.indentOutput(apiIndent)
 				.simpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
-		MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(builder.build());
+		ObjectMapper mapper = builder.build();
+		mapper.setConfig(mapper.getSerializationConfig().withView(View.Public.class));
+		MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(mapper);
 		List<MediaType> mediaTypes = new ArrayList<>();
 		mediaTypes.add(API_V3_MEDIA_TYPE);
 		mediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
@@ -203,8 +208,11 @@ public class AppConfig extends WebMvcConfigurerAdapter {
 				.defaultViewInclusion(false)
 				.indentOutput(apiIndent)
 				.featuresToEnable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
-				.featuresToEnable(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS);
-		MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(builder.build());
+				.featuresToEnable(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS)
+				.modules(new CouchDbDocumentModule());
+		ObjectMapper mapper = builder.build();
+		mapper.setConfig(mapper.getSerializationConfig().withView(View.Public.class));
+		MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(mapper);
 		List<MediaType> mediaTypes = new ArrayList<>();
 		mediaTypes.add(API_V2_MEDIA_TYPE);
 		mediaTypes.add(MediaType.APPLICATION_JSON_UTF8);