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TomEE 및 tomee.xml에 지정된 DataSource를 사용하는 것과 관련하여 이상한 문제가 있습니다. Netbeans, TomEE 및 MySQL을 사용하고 있다는 점에 유의할 가치가 있습니다. 우분투 13.04 (최신 분투)에서 실행TomEE DataSource를 찾을 수 없습니다.
tomee.xml 파일은 다음과 같다 :
<?xml version="1.0" encoding="UTF-8"?>
<tomee>
<Resource id="booktablesDS" type="DataSource">
JdbcDriver com.mysql.jdbc.Driver
JdbcUrl jdbc:mysql:localhost:3306/book_tables
UserName juser
Password jpassword
JtaManaged true
</Resource>
</tomee>
그리고 작은 codesnippet을 연결 풀 테스트 :
@Resource DataSource booktablesDS;
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
Connection c = booktablesDS.getConnection();
Statement stmt = c.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM BOOKS");
난 출력을 TomEE에서 얻는 것은 :
SEVERE: null
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
전체 스택 추적이 다음과 같습니다.
May 06, 2013 11:08:53 AM org.apache.catalina.util.LifecycleBase start
INFO: The start() method was called on component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/EJBTest]] after start() had already been called. The second call will be ignored.
May 06, 2013 11:08:54 AM MainS processRequest
SEVERE: null
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1452)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at MainS.processRequest(MainS.java:35)
at MainS.doGet(MainS.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
at sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(JdbcOdbcDriver.java:524)
at sun.jdbc.odbc.JdbcOdbcDriver.knownURL(JdbcOdbcDriver.java:493)
at sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(JdbcOdbcDriver.java:307)
at java.sql.DriverManager.getDriver(DriverManager.java:273)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
... 22 more
May 06, 2013 11:08:55 AM org.apache.catalina.startup.HostConfig deleteRedeployResources
INFO: Undeploying context [/EJBTest]
netbeans가 다른 tomee.xml 파일로 프로젝트를 배포하는 것처럼 느껴질까요? Tom-ee/conf/tomee.xml 아래에있는 tomee.xml의 값을 무시합니다.
도움이 될 것입니다.
그게 문제였습니다. // 거기에 없었다. .. 오 잘, 잘 알고있다! 이제 나는 더러운 지속 문제를 가지고 있습니다 ... –
다행이 지금 있습니다. "//"가 잘못된 위치에있을 때 종종 문제가됩니다. :-) –