asmhatre/spring-boot-demo
1
0
Fork 0
Code Activity

Add core-di: constructor vs setter vs field injection and @Autowired candidate resolution on Boot 4.1

Browse Source 
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01JoVmf2fWvcpoXndcDSwRf7
This commit is contained in:
Claude
2026-09-24 04:59:40 +00:00
parent b0c39a8d4c
commit 9825efa081
87 changed files with 1945 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
core-di/output/13-optional-and-objectprovider.txt
+19
View File
@@ -0,0 +1,19 @@
# Five ways to say 'this may not exist', with zero and with two Notifier beans (Email registered before Sms)
--- zero Notifier beans ---
plain constructor param : FAILED NoSuchBeanDefinitionException
Optional<Notifier> : isPresent=false
@Nullable Notifier : value=null
ObjectProvider.getIfAvailable() : null
ObjectProvider.getIfUnique() : null
ObjectProvider.getObject() : NoSuchBeanDefinitionException: No qualifying bean of type 'com.ankurm.coredi.injection.Notifier' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
@Autowired(required=false) setter: value=null
--- two Notifier beans (Sms, Email), no @Primary ---
ObjectProvider.getIfAvailable() : NoUniqueBeanDefinitionException: No qualifying bean of type 'com.ankurm.coredi.injection.Notifier' available: expected single matching bean but found 2: emailNotifier,smsNotifier
ObjectProvider.getIfUnique() : null
ObjectProvider.stream() classes : [EmailNotifier, SmsNotifier]
ObjectProvider.orderedStream() : [SmsNotifier, EmailNotifier]
Optional<Notifier> with two beans: FAILED NoUniqueBeanDefinitionException
No qualifying bean of type 'com.ankurm.coredi.injection.Notifier' available: expected single matching bean but found 2: emailNotifier,smsNotifier