I was upgrading from GeoServer 2.22.4 to 2.22.5 using the Web Archive (WAR) package and deploying in JDK8 and encountered a NoSuchMethodError related to compiling the GeoTools JARs with JDK11. I was able to reproduce the error using the unmodified WAR directly from the download site and the default data directory (stack trace is at the end).
I looked at the MANIFEST.MF files in the GeoTools 28.5 JARs in the WAR and they say "Build-Jdk-Spec: 11" but the GeoTools 28.5 JARs in the OSGeo Nexus repo say "Build-Jdk-Spec: 1.8" and I was able to confirm that replacing the affected GeoTools JARs with the Nexus version ran fine with JDK8. MANIFEST.MF from the gt-shapefile-28.5.jar in https://sourceforge.net/projects/geoserver/files/GeoServer/2.22.5/geoserver-2.22.5-war.zip Build-Jdk-Spec: 11 Build-Timestamp: 30-Aug-2023 08:29 Git-Revision: e932a443b6e51756ebf1261baab4c0c390706ece MANIFEST.MF from https://repo.osgeo.org/repository/release/org/geotools/gt-shapefile/28.5/gt-shapefile-28.5.jar Build-Jdk-Spec: 1.8 Build-Timestamp: 31-Aug-2023 12:31 Git-Revision: 53833690070eb6af1b283ab278e6da4267be3cac These are the GeoTools modules that directly use java.nio.ByteBuffer with main, metadata, referencing and shapefile being included in the core package: library/main library/metadata library/referencing plugin/grassraster plugin/jdbc/jdbc-hana plugin/shapefile unsupported/flatgeobuff unsupported/geobuff unsupported/s3-geotiff I don't know if this is serious enough to consider doing another "final" 2.22.x release when a developer becomes available. If not, a note should be added somewhere that JDK8 users will need to either stay on GeoServer 2.22.4 or use the workaround of manually replace certain GeoTools JARs if they are using GeoServer in a way that triggers these errors. Stack Trace: 2023-09-05 15:38:39,662 ERROR [org.geoserver] Failed to run initializer org.geoserver.gwc.config.GWCInitializer@609e3e1: java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer; at org.geotools.data.shapefile.dbf.DbaseFileHeader.readHeader(DbaseFileHeader.java:577) at org.geotools.data.shapefile.dbf.DbaseFileReader.doInit(DbaseFileReader.java:226) at org.geotools.data.shapefile.dbf.DbaseFileReader.init(DbaseFileReader.java:186) at org.geotools.data.shapefile.dbf.DbaseFileReader.<init>(DbaseFileReader.java:148) at org.geotools.data.shapefile.ShapefileSetManager.openDbfReader(ShapefileSetManager.java:132) at org.geotools.data.shapefile.ShapefileFeatureSource.readAttributes(ShapefileFeatureSource.java:497) at org.geotools.data.shapefile.ShapefileFeatureSource.buildFeatureType(ShapefileFeatureSource.java:454) at org.geotools.data.shapefile.ShapefileFeatureStore.buildFeatureType(ShapefileFeatureStore.java:142) at org.geotools.data.store.ContentFeatureSource.getAbsoluteSchema(ContentFeatureSource.java:339) at org.geotools.data.store.ContentFeatureSource.getSchema(ContentFeatureSource.java:308) at org.geotools.data.store.ContentDataStore.getSchema(ContentDataStore.java:295) at org.geotools.data.directory.DirectoryDataStore.getSchema(DirectoryDataStore.java:106) at org.geotools.data.directory.DirectoryDataStore.getSchema(DirectoryDataStore.java:178) at org.geotools.data.directory.DirectoryDataStore.getSchema(DirectoryDataStore.java:50) at org.geoserver.catalog.ResourcePool.acquireFeatureType(ResourcePool.java:1012) at org.geoserver.catalog.ResourcePool.getCacheableFeatureType(ResourcePool.java:994) at org.geoserver.catalog.ResourcePool.tryGetFeatureType(ResourcePool.java:977) at org.geoserver.catalog.ResourcePool.getFeatureType(ResourcePool.java:960) at org.geoserver.catalog.ResourcePool.getFeatureType(ResourcePool.java:954) at org.geoserver.catalog.ResourcePool.loadAttributes(ResourcePool.java:841) at org.geoserver.catalog.ResourcePool.attributeTypeInfos(ResourcePool.java:825) at org.geoserver.catalog.ResourcePool.getAttributes(ResourcePool.java:815) at org.geoserver.catalog.impl.FeatureTypeInfoImpl.attributes(FeatureTypeInfoImpl.java:129) Steve Ikeoka
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