新手请教：struts中datasource问题！！

Daniel 2005-01-29 03:19:03

我在datadatasource 中的配置如下：
<data-sources>
<data-source type="org.apache.commons.dbcp.BasicDataSource">
<set-property property="defaultAutoCommit" value="false"/>
<set-property property="description" value="Data Source Configuration"/>
<set-property property="driverClassName" value="com.microsoft.jdbc.sqlserver.SQLServerDriver"/>
<set-property property="maxActive" value="10"/>
<set-property property="maxIdle" value="1"/>
<set-property property="username" value="sa"/>
<set-property property="password" value=""/>
<set-property property="url" value="jdbc:microsoft:sqlserver://192.168.1.109:1433;DatabaseName=student;SelectMethod=cursor"/>
</data-source>

在一个测试action中想建立数据库连接故去取其datasource，语法如下：
javax.sql.DataSource dataSource = getDataSource(request);
System.out.println("----dataSource-----");
try {
conn = dataSource.getConnection(username,pwd1);
System.out.println("----conn-----");
} catch (SQLException e1) {}
但是出现错误，报错如下：
----dataSource-----
Dec 14, 2004 3:19:22 PM org.apache.struts.action.RequestProcessor processExcepti
on
??: Unhandled Exception thrown: class java.lang.UnsupportedOperationException
java.lang.NullPointerException
at org.apache.coyote.tomcat5.OutputBuffer.realWriteChars(OutputBuffer.ja
va:589)
at org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:463)
at org.apache.coyote.tomcat5.OutputBuffer.close(OutputBuffer.java:314)
at org.apache.coyote.tomcat5.CoyoteResponse.finishResponse(CoyoteRespons
e.java:495)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:20
7)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:647)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:511)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:575)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:649)
at java.lang.Thread.run(Thread.java:534)

请问各位好汉这是怎么一回事？？？？？

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