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Try loadClass on LinkageError in case of ClassLoader mismatch 

See gh-34677
This commit is contained in:
Juergen Hoeller 2025-04-10 18:30:45 +02:00
parent 26869b0e4c
commit 7f2c1f447f
1 changed files with 19 additions and 8 deletions
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27
spring-core/src/main/java/org/springframework/cglib/core/ReflectUtils.java
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@ -527,15 +527,26 @@ public class ReflectUtils {
c = lookup.defineClass(b); c = lookup.defineClass(b);
} }
catch (LinkageError | IllegalAccessException ex) { catch (LinkageError | IllegalAccessException ex) {
throw new CodeGenerationException(ex) { if (ex instanceof LinkageError) {
@Override // Could be a ClassLoader mismatch with the class pre-existing in a
public String getMessage() { // parent ClassLoader -> try loadClass before giving up completely.
return "ClassLoader mismatch for [" + contextClass.getName() + try {
"]: JVM should be started with --add-opens=java.base/java.lang=ALL-UNNAMED " + c = contextClass.getClassLoader().loadClass(className);
"for ClassLoader.defineClass to be accessible on " + loader.getClass().getName() +
"; consider co-locating the affected class in that target ClassLoader instead.";
} }
}; catch (ClassNotFoundException cnfe) {
}
}
if (c == null) {
throw new CodeGenerationException(ex) {
@Override
public String getMessage() {
return "ClassLoader mismatch for [" + contextClass.getName() +
"]: JVM should be started with --add-opens=java.base/java.lang=ALL-UNNAMED " +
"for ClassLoader.defineClass to be accessible on " + loader.getClass().getName() +
"; consider co-locating the affected class in that target ClassLoader instead.";
}
};
}
} }
catch (Throwable ex) { catch (Throwable ex) {
throw new CodeGenerationException(ex); throw new CodeGenerationException(ex);