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new cb24f79e158f CAMEL-25331 - Adapt PrinterPrintTest for JDK 27
cb24f79e158f is described below
commit cb24f79e158f4cb21d3066af73d526faa9d58bf0
Author: Aurélien Pupier <[email protected]>
AuthorDate: Mon Oct 5 11:34:43 2026 +0200
CAMEL-25331 - Adapt PrinterPrintTest for JDK 27
In JDK 27 sun.awt.AppContext was removed and PrintServiceLookup no
longer has a Services inner class. The test was failing at construction
time with ArrayIndexOutOfBoundsException because of the inline field
initializer relying on getDeclaredClasses()[0].
Detect the JDK variant at runtime:
- JDK <=26: keep the existing AppContext + Services class key approach
- JDK 27+: save/restore the two static fields (listOfLookupServices,
registeredServices) directly on PrintServiceLookup via reflection
Co-authored-by: IBM Bob 2.2.1
Signed-off-by: Aurélien Pupier <[email protected]>
---
.../camel/component/printer/PrinterPrintTest.java | 54 ++++++++++++++++------
1 file changed, 41 insertions(+), 13 deletions(-)
diff --git
a/components/camel-printer/src/test/java/org/apache/camel/component/printer/PrinterPrintTest.java
b/components/camel-printer/src/test/java/org/apache/camel/component/printer/PrinterPrintTest.java
index fea5ff5989a4..5abcc2c54173 100644
---
a/components/camel-printer/src/test/java/org/apache/camel/component/printer/PrinterPrintTest.java
+++
b/components/camel-printer/src/test/java/org/apache/camel/component/printer/PrinterPrintTest.java
@@ -18,6 +18,7 @@ package org.apache.camel.component.printer;
import java.io.FileInputStream;
import java.io.InputStream;
+import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
@@ -60,8 +61,11 @@ import static org.mockito.Mockito.when;
@DisabledOnOs(OS.AIX)
public class PrinterPrintTest extends CamelTestSupport {
- Class<?> printServiceLookupServicesClass =
PrintServiceLookup.class.getDeclaredClasses()[0];
+ // Saved state for AppContext-based JDKs (≤26): the Services object stored
under the Services class key
Object printServiceLookup;
+ // Saved state for JDK 27+: the two static fields on PrintServiceLookup
directly
+ Object savedListOfLookupServices;
+ Object savedRegisteredServices;
@BeforeEach
public void setup() throws Exception {
@@ -406,13 +410,25 @@ public class PrinterPrintTest extends CamelTestSupport {
}
protected void setupJavaPrint() throws Exception {
- // save the current print services
- Class<?> clazz =
context.getClassResolver().resolveClass("sun.awt.AppContext");
- Object ac = clazz.getMethod("getAppContext").invoke(null);
- printServiceLookup = clazz.getMethod("get", Object.class).invoke(ac,
printServiceLookupServicesClass);
-
- // setup a new empty list of printer services
- clazz.getMethod("put", Object.class, Object.class).invoke(ac,
printServiceLookupServicesClass, null);
+ Class<?> appContextClass =
context.getClassResolver().resolveClass("sun.awt.AppContext");
+ if (appContextClass != null) {
+ // JDK ≤26: state lives in an AppContext keyed by the inner
Services class
+ Class<?> servicesClass =
PrintServiceLookup.class.getDeclaredClasses()[0];
+ Object ac =
appContextClass.getMethod("getAppContext").invoke(null);
+ printServiceLookup = appContextClass.getMethod("get",
Object.class).invoke(ac, servicesClass);
+ appContextClass.getMethod("put", Object.class,
Object.class).invoke(ac, servicesClass, null);
+ } else {
+ // JDK 27+: state lives in two static fields directly on
PrintServiceLookup
+ Field listField =
PrintServiceLookup.class.getDeclaredField("listOfLookupServices");
+ listField.setAccessible(true);
+ savedListOfLookupServices = listField.get(null);
+ listField.set(null, null);
+
+ Field regField =
PrintServiceLookup.class.getDeclaredField("registeredServices");
+ regField.setAccessible(true);
+ savedRegisteredServices = regField.get(null);
+ regField.set(null, null);
+ }
Method method =
PrintServiceLookup.class.getDeclaredMethod("initListOfLookupServices");
method.setAccessible(true);
@@ -437,11 +453,23 @@ public class PrinterPrintTest extends CamelTestSupport {
}
protected void restoreJavaPrint() throws Exception {
- // restore print services
- if (printServiceLookup != null) {
- Class<?> clazz =
context.getClassResolver().resolveClass("sun.awt.AppContext");
- Object ac = clazz.getMethod("getAppContext").invoke(null);
- clazz.getMethod("put", Object.class, Object.class).invoke(ac,
printServiceLookupServicesClass, printServiceLookup);
+ Class<?> appContextClass =
context.getClassResolver().resolveClass("sun.awt.AppContext");
+ if (appContextClass != null) {
+ // JDK ≤26: restore the Services object in AppContext
+ if (printServiceLookup != null) {
+ Class<?> servicesClass =
PrintServiceLookup.class.getDeclaredClasses()[0];
+ Object ac =
appContextClass.getMethod("getAppContext").invoke(null);
+ appContextClass.getMethod("put", Object.class,
Object.class).invoke(ac, servicesClass, printServiceLookup);
+ }
+ } else {
+ // JDK 27+: restore the two static fields
+ Field listField =
PrintServiceLookup.class.getDeclaredField("listOfLookupServices");
+ listField.setAccessible(true);
+ listField.set(null, savedListOfLookupServices);
+
+ Field regField =
PrintServiceLookup.class.getDeclaredField("registeredServices");
+ regField.setAccessible(true);
+ regField.set(null, savedRegisteredServices);
}
}
