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Allow target type of a cglib proxy to be visible

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This commit updates the hints of a Cglib proxy's target type so that
methods can be invoked and constructors can be introspected. The former
is needed as a cglib proxy invokes the target type via reflection. As
for that latter, this is required at least by
Enhancer#filterConstructors.

See gh-28954
This commit is contained in:
Stephane Nicoll
2022-08-16 07:32:42 +02:00
parent c58c827291
commit 9a1b7c5e47
2 changed files with 36 additions and 5 deletions
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15
spring-context/src/main/java/org/springframework/context/aot/GeneratedClassHandler.java
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@@ -43,6 +43,10 @@ class GeneratedClassHandler implements BiConsumer<String, byte[]> {
MemberCategory.INVOKE_DECLARED_METHODS,
MemberCategory.DECLARED_FIELDS);
private static final Consumer<Builder> asCglibProxyTargetType = hint ->
hint.withMembers(MemberCategory.INTROSPECT_DECLARED_CONSTRUCTORS,
MemberCategory.INVOKE_DECLARED_METHODS);
private final RuntimeHints runtimeHints;
private final GeneratedFiles generatedFiles;
@@ -54,9 +58,18 @@ class GeneratedClassHandler implements BiConsumer<String, byte[]> {
@Override
public void accept(String className, byte[] content) {
this.runtimeHints.reflection().registerType(TypeReference.of(className), asCglibProxy);
this.runtimeHints.reflection().registerType(TypeReference.of(className), asCglibProxy)
.registerType(TypeReference.of(getTargetTypeClassName(className)), asCglibProxyTargetType);
String path = className.replace(".", "/") + ".class";
this.generatedFiles.addFile(Kind.CLASS, path, new ByteArrayResource(content));
}
private String getTargetTypeClassName(String proxyClassName) {
int index = proxyClassName.indexOf("$$SpringCGLIB$$");
if (index == -1) {
throw new IllegalArgumentException("Failed to extract target type from " + proxyClassName);
}
return proxyClassName.substring(0, index);
}
}