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feat: improve error message when Jackson is missing from classpath #473

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Merged
edeandrea merged 3 commits into from
Apr 28, 2026
+14 −2
Merged

feat: improve error message when Jackson is missing from classpath #473

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25c51d1
feat: improve error message when Jackson is missing from classpath
edeandrea Apr 28, 2026
1418ffa
fix: remove trailing backslash from text block in error message
edeandrea Apr 28, 2026
6c5c7fb
fix: use <version> placeholder instead of $version in error message
edeandrea Apr 28, 2026
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12 changes: 11 additions & 1 deletion ...-serve-client/src/main/java/ai/docling/serve/client/DoclingServeClientBuilderFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,17 @@ else if (JacksonVersion.JACKSON_2.isOnClasspath(classLoader)) {
return (B) DoclingServeJackson2Client.builder();
}

throw new IllegalStateException("Neither Jackson 2 or 3 is on the classpath");
throw new IllegalStateException("""
Neither Jackson 2 nor Jackson 3 is on the classpath. You must add one of the following dependencies:

For Jackson 2:
Maven: com.fasterxml.jackson.core:jackson-databind
Gradle: implementation("com.fasterxml.jackson.core:jackson-databind:<version>")

For Jackson 3:
Maven: tools.jackson.core:jackson-databind
Gradle: implementation("tools.jackson.core:jackson-databind:<version>")
""");
}

/**
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4 changes: 3 additions & 1 deletion ...e-client/src/test/java/ai/docling/serve/client/DoclingServeClientBuilderFactoryTests.java
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Expand Up @@ -28,7 +28,9 @@ void noBuilderWhenNeitherArePresent() {

assertThatExceptionOfType(IllegalStateException.class)
.isThrownBy(() -> DoclingServeClientBuilderFactory.<DoclingServeClient, DoclingServeClientBuilder>newBuilder(classLoader))
.withMessage("Neither Jackson 2 or 3 is on the classpath");
.withMessageContaining("Neither Jackson 2 nor Jackson 3 is on the classpath")
.withMessageContaining("com.fasterxml.jackson.core:jackson-databind")
.withMessageContaining("tools.jackson.core:jackson-databind");
}

@ParameterizedTest
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