按照示例代码运行后,数据源别名已被占用,求解决。

0 投票
使用产品:supermap iobjects JAVA 9D 操作系统:win10

数据类型:sqlserver2012

问题描述:我想打开已有的数据源,但是运行示例程序中的代码后,提示如下:

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: connectionInfo
数据源别名已被占用
    at com.supermap.data.Datasources.open(Unknown Source)
    at colorchange_v1.CreateandOpenDataset$2.windowOpened(CreateandOpenDataset.java:96)
    at java.awt.AWTEventMulticaster.windowOpened(Unknown Source)
    at java.awt.Window.processWindowEvent(Unknown Source)
    at javax.swing.JFrame.processWindowEvent(Unknown Source)
    at java.awt.Window.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

connectinfo用于连接工作空间,代码如下:

workspace = new Workspace();
            WorkspaceConnectionInfo connectionInfo = new WorkspaceConnectionInfo();
            connectionInfo.setDriver("SQL SERVER");
            connectionInfo.setType(WorkspaceType.SQL);
            connectionInfo.setServer("localhost");
            connectionInfo.setDatabase("xjtsupermap_workplace");
            connectionInfo.setUser("sa");
            connectionInfo.setPassword("12345");
            connectionInfo.setName("testworkplace");
            connectionInfo.setVersion(WorkspaceVersion.UGC60);
            boolean result = workspace.open(connectionInfo);
 

加了如下代码之后发生了错误:

                DatasourceConnectionInfo datasourceconnection = new DatasourceConnectionInfo();
                
                    
                    datasourceconnection.setEngineType(EngineType.SQLPLUS);
                    datasourceconnection.setServer("localhost");
                    datasourceconnection.setDatabase("xjtsupermap_datasource");
                    datasourceconnection.setUser("sa");
                    datasourceconnection.setPassword("12345");
                    datasourceconnection.setAlias("SQL");
                    datasourceconnection.setDriver("SQL Server");
                    
                     datasource = workspace.getDatasources().open(datasourceconnection);
                    if (datasource == null) {
                        JOptionPane.showMessageDialog(null, "打开数据源失败.", "警告",JOptionPane.ERROR_MESSAGE);  
                        datasourceconnection.dispose();
                    } else {
                        JOptionPane.showMessageDialog(null, "打开数据源成功");
                        datasourceconnection.dispose();
                            }

别名是什么意思?怎么解决这个问题呢啊?
3月 12, 2020 分类:  137次浏览 | 用户: xjt1223564154 初出茅庐 (30 分)
修改于 3月 12, 2020 用户:xjt1223564154

1个回答

0 投票
 
已采纳
很神奇,第一次重建一个新项目之后写同样的代码依然报错,然后再重建一个新项目重写代码之后就好了。。。玄学。不过还是求解决,不然下次再遇到还是很麻烦
3月 12, 2020 用户: xjt1223564154 初出茅庐 (30 分)
采纳于 3月 16, 2020 用户:xjt1223564154
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