Just ran across this in a video about Spring Boot by Frank Moley and I thought it deserved a callout.<\/p>\n\n\n\n
When creating your Beans (e.g. Controller), you can either:<\/p>\n\n\n\n
\n@RestController()\npublic class ItemController {\n @Autowired;\n private ItemService itemService;\n<\/code>\n<\/div>\n<\/div>\n\n\n\nOr you can do this:<\/p>\n\n\n\n
\n\n\n@RestController()\npublic class ItemController {\n private final ItemService itemService;\n\n @Autowired;\n public ItemController(ItemService itemService) {\n this.itemService = itemService\n }\n<\/code>\n<\/div>\n<\/div>\n\n\n\n<\/p>\n\n\n\n
Both work, but the second one makes JUnit testing way easier. The first one @Autowires the actual field, and is really hard to isolate for test. The second one lets the field stay POJO, and @Autowires the constructor. Both are Spring friendly, but only the second one is JUnit friendly.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Just ran across this in a video about Spring Boot by Frank Moley and I thought it deserved a callout. When creating your Beans (e.g. Controller), you can either: @RestController() public class ItemController { @Autowired; private ItemService itemService; Or you … Continue reading