Claude
c418589251
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
31 lines
1.8 KiB
Plaintext
31 lines
1.8 KiB
Plaintext
# Boot 4.1.1: where the auto-configuration classes a starter refers to now live
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--- entries in spring-boot-autoconfigure's own AutoConfiguration.imports ---
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12
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--- JacksonAutoConfiguration: which jar, which package ---
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spring-boot-autoconfigure-4.1.1.jar, classes named JacksonAutoConfiguration: 0
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spring-boot-jackson-4.1.1.jar: org/springframework/boot/jackson/autoconfigure/JacksonAutoConfiguration.class
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--- what @AutoConfiguration is made of (javap -v, class-level annotations) ---
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org.springframework.context.annotation.Configuration(
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proxyBeanMethods=false
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org.springframework.boot.autoconfigure.AutoConfigureBefore
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org.springframework.boot.autoconfigure.AutoConfigureAfter
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--- AutoConfigurationExcludeFilter, the filter @SpringBootApplication's scan applies: the classes it tests for (javap -c) ---
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ldc #26 // class org/springframework/context/annotation/Configuration
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ldc #40 // class org/springframework/boot/autoconfigure/AutoConfiguration
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ldc #40 // class org/springframework/boot/autoconfigure/AutoConfiguration
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invokestatic #65 // Method org/springframework/boot/context/annotation/ImportCandidates.load:(Ljava/lang/Class;Ljava/lang/ClassLoader;)Lorg/springframework/boot/context/annotation/ImportCandidates;
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--- the Boot 3 import, compiled against the 4.1.1 jars ---
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masker-spring-boot-autoconfigure/src/broken/OldJacksonImport.java:4: error: package org.springframework.boot.autoconfigure.jackson does not exist
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import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
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^
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masker-spring-boot-autoconfigure/src/broken/OldJacksonImport.java:7: error: cannot find symbol
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@AutoConfiguration(after = JacksonAutoConfiguration.class)
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^
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symbol: class JacksonAutoConfiguration
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2 errors
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