服务器连接数据库正常,设计器端提示连接失败,报错如下:java.lang.NullPointerExceptioncom.fr.data.impl.JDBCDatabaseConnection.clone(JDBCDatabaseConnection.java.475)com.fr.data.impl.JDBCDatabaseConnection.validateSettings(JDBCDatabaseConnection.java.330)com.fr.data.impl.JDBCDatabaseConnection.testConnection(JDBCDatabaseConnection.java.357)com.fr.data.operator.DataOperator$8.call(DataOperator.java.-1)com.fr.data.operator.DataOperator$8.call(DataOperator.java.-1)java.util.concurrent.FutureTask.run(FutureTask.java.266)java.util.concurrent.Executors$RunnableAdapter.call(Executors.java.511)java.util.concurrent.FutureTask.run(FutureTask.java.266)java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java.1149)java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java.624)java.lang.Thread.run(Thread.java.750)数据库的链接配置是正常的,并且来源于服务器。