在一个线程中,正在创建一个JackRabbit:
"docs-on-startup" #32 prio=5 os_prio=0 tid=0x00007f730d73e800 nid=0x601d in Object.wait() [0x00007f725bffc000]
java.lang.Thread.State: RUNNABLE
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
at java.sql.DriverManager$2.run(DriverManager.java:603)
at java.sql.DriverManager$2.run(DriverManager.java:583)
at java.security.AccessController.doPrivileged(Native Method)
at java.sql.DriverManager.loadInitialDrivers(DriverManager.java:583)
at java.sql.DriverManager.<clinit>(DriverManager.java:101)
at org.apache.derby.jdbc.EmbeddedDriver.boot(Unknown Source)
at org.apache.derby.jdbc.EmbeddedDriver.<clinit>(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.jackrabbit.core.util.db.ConnectionFactory.getDriverClass(ConnectionFactory.java:261)
at org.apache.jackrabbit.core.util.db.ConnectionFactory.createDataSource(ConnectionFactory.java:234)
at org.apache.jackrabbit.core.util.db.ConnectionFactory.getDataSource(ConnectionFactory.java:170)
- locked <0x000000066c71ea70> (a java.lang.Object)
at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.getDataSource(BundleDbPersistenceManager.java:569)
at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.init(BundleDbPersistenceManager.java:537)
at org.apache.jackrabbit.core.persistence.pool.DerbyPersistenceManager.init(DerbyPersistenceManager.java:250)
at org.apache.jackrabbit.core.RepositoryImpl.createPersistenceManager(RepositoryImpl.java:1375)
at org.apache.jackrabbit.core.RepositoryImpl.createVersionManager(RepositoryImpl.java:512)
at org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:313)
at org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:615)
在另一个线程中,使用Class.forName("org.postgresql.Driver")初始化Postgres驱动程序的驱动程序:
"schema-task-1" #37 prio=5 os_prio=0 tid=0x00007f725402b000 nid=0x6021 in Object.wait() [0x00007f725baf9000]
java.lang.Thread.State: RUNNABLE
at org.postgresql.Driver.register(Driver.java:730)
at org.postgresql.Driver.<clinit>(Driver.java:70)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
没有线程完成其任务,不确定是否理解原因。初始化JDBC驱动程序的方式有问题吗?