完善数据库存储知识库添加采用spring中配置数据源功能

urule-console/src/main/java/com/bstek/urule/console/repository/RepositoryBuilder.java

@@ -289,7 +289,7 @@ public class RepositoryBuilder implements InitializingBean,ApplicationContextAwa
 	}
 	
 	private void initRepositoryFromSpringDatasource() throws Exception{
-		System.out.println("Init repository from spring datasource ["+repositoryDatasourceName+"] with database type [RepositoryBuilder.databaseType]...");
+		System.out.println("Init repository from spring datasource ["+repositoryDatasourceName+"] with database type ["+RepositoryBuilder.databaseType+"]...");
 		String xml="classpath:com/bstek/urule/console/repository/database/configs/"+RepositoryBuilder.databaseType+".xml";
 		initRepositoryByXml(xml);
 	}

urule-console/src/main/java/com/bstek/urule/console/repository/database/manager/DerbyPersistenceManager.java

@@ -15,7 +15,6 @@
  ******************************************************************************/
 package com.bstek.urule.console.repository.database.manager;
 
-import java.sql.Connection;
 import java.sql.SQLException;
 
 import javax.sql.DataSource;