Hi there
I have a very specific technical problem during ant compilation.
There error message is as follows:
test_database:
[java] 2018-03-26 09:51:20,494 WARN
org.dspace.services.email.EmailServiceImpl @ Couldn't get an email session from
environment: Need to specify class name in environment or system property, or
as an applet parameter, or in an application resource file:
java.naming.factory.initial
[java] Exception: org/postgresql/Driver : Unsupported major.minor version
52.0
[java] java.lang.UnsupportedClassVersionError: org/postgresql/Driver :
Unsupported major.minor version 52.0
[java] at java.lang.ClassLoader.defineClass1(Native Method)
[java] at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
[java] at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[java] at java.net.URLClassLoader.defineClass(URLClassLoader.java:442)
[java] at java.net.URLClassLoader.access$100(URLClassLoader.java:64)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:354)
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
[java] at java.security.AccessController.doPrivileged(Native Method)
[java] at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
[java] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:312)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
[java] at java.lang.Class.forName0(Native Method)
[java] at java.lang.Class.forName(Class.java:195)
[java] at
org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2124)
[java] at
org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2033)
[java] at
org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)
[java] at
org.dspace.storage.rdbms.DatabaseUtils.setupFlyway(DatabaseUtils.java:473)
[java] at
org.dspace.storage.rdbms.DatabaseUtils.main(DatabaseUtils.java:98)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:606)
[java] at
org.dspace.app.launcher.ScriptLauncher.runOneCommand(ScriptLauncher.java:229)
[java] at
org.dspace.app.launcher.ScriptLauncher.main(ScriptLauncher.java:81)
I pretty certain this is because Ant is using Java 1.7 to compile instead of
1.8.
Java version:
openjdk version "1.8.0_161"
OpenJDK Runtime Environment (build 1.8.0_161-b14)
OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)
Alternatives conf;
alternatives --config java
There are 2 programs which provide 'java'.
Selection Command
-----------------------------------------------
*+ 1 java-1.8.0-openjdk.x86_64
(/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64/jre/bin/java)
2 java-1.7.0-openjdk.x86_64
(/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.161-2.6.12.0.el7_4.x86_64/jre/bin/java)
And ant diagnostics:
------- Ant diagnostics report -------
Apache Ant(TM) version 1.9.2 compiled on June 10 2014
java.runtime.version : 1.7.0_161-mockbuild_2017_12_06_14_27-b00
java.specification.version : 1.7
java.vm.specification.version : 1.7
java.version : 1.7.0_161
I've added
<echo message="Ant running on Java version ${ant.java.version}"/>
into the build xml file which confirms that Ant is compiling in 1.7
I've tried adding
<javac srcdir="." source="1.8" target="1.8" includeantruntime="false"/>
into the build.xml as well in the test_database target but that doesn't seem to
make a difference.
Any help would be greatly appreciated. I realise reinstalling Ant might be the
most straightforward solution but this is on a server I don't have easy access
to so I want to try the config approach first.
Hrafn
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