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

Add custom-starter module: a Boot 4 auto-configuration starter with conditions, metadata and runner tests

Browse Source 
Two-jar starter (autoconfigure + starter), a demo app, and 17 captured transcripts
covering AutoConfiguration.imports, @ConditionalOn*, ordering, optional Jackson 3
integration, configuration metadata and the Boot 4 module split.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Uu7q8vPeREyT4218EJPzz1
This commit is contained in:
Claude
2026-09-24 06:53:07 +00:00
parent d6a2e1a5f2
commit c418589251
57 changed files with 1590 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
custom-starter/output/14-boot4-autoconfiguration-locations.txt
+30
View File
@@ -0,0 +1,30 @@
# Boot 4.1.1: where the auto-configuration classes a starter refers to now live
--- entries in spring-boot-autoconfigure's own AutoConfiguration.imports ---
12
--- JacksonAutoConfiguration: which jar, which package ---
spring-boot-autoconfigure-4.1.1.jar, classes named JacksonAutoConfiguration: 0
spring-boot-jackson-4.1.1.jar: org/springframework/boot/jackson/autoconfigure/JacksonAutoConfiguration.class
--- what @AutoConfiguration is made of (javap -v, class-level annotations) ---
org.springframework.context.annotation.Configuration(
proxyBeanMethods=false
org.springframework.boot.autoconfigure.AutoConfigureBefore
org.springframework.boot.autoconfigure.AutoConfigureAfter
--- AutoConfigurationExcludeFilter, the filter @SpringBootApplication's scan applies: the classes it tests for (javap -c) ---
ldc #26 // class org/springframework/context/annotation/Configuration
ldc #40 // class org/springframework/boot/autoconfigure/AutoConfiguration
ldc #40 // class org/springframework/boot/autoconfigure/AutoConfiguration
invokestatic #65 // Method org/springframework/boot/context/annotation/ImportCandidates.load:(Ljava/lang/Class;Ljava/lang/ClassLoader;)Lorg/springframework/boot/context/annotation/ImportCandidates;
--- the Boot 3 import, compiled against the 4.1.1 jars ---
masker-spring-boot-autoconfigure/src/broken/OldJacksonImport.java:4: error: package org.springframework.boot.autoconfigure.jackson does not exist
import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
^
masker-spring-boot-autoconfigure/src/broken/OldJacksonImport.java:7: error: cannot find symbol
@AutoConfiguration(after = JacksonAutoConfiguration.class)
^
symbol: class JacksonAutoConfiguration
2 errors