다른 문제를 해결하려면 다소 오래된 tomcat 5 설치를 tomcat 7 installtion으로 교체해야합니다. 내 응용 프로그램은 응용 프로그램 context.xml에 정의 된 datasource를 사용하여 데이터베이스에 연결합니다. 그러나 데이터 소스를 가져 오는 내 코드 오류없이 작동하는 것 같다 있지만 톰캣 7로 이동 한 후Tomcat 5.0.27에서 Tomcat 7.0.30으로 업그레이드 한 후 데이터베이스에 액세스 할 수 없습니다.
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("java:comp/env/jdbc/jaikoz");
연결을 얻기 위해 시도합니다 (예외 또는 반환 널 (null)을 던져 나던) 실패
getDataSource.getConnection()
그것은> 뭔가 tomcat7 다르게 작동하는지 궁금 해요 또는 b> 내가 뭔가를 잊어 버린
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 com.jthink.appserver.jaikoz.util.db.DBManager.getConnection(DBManager.java:92)
com.jthink.appserver.jaikoz.action.Check.handleRequest(CheckVersion2.java:145)
at com.jthink.appserver.jaikoz.Session.run(Session.java:66)
at com.jthink.appserver.jaikoz.Controller.doTask(Controller.java:68)
at com.jthink.appserver.jaikoz.Controller.doGet(Controller.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
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:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
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:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(JdbcOdbcDriver.java:507)
at sun.jdbc.odbc.JdbcOdbcDriver.knownURL(JdbcOdbcDriver.java:476)
at sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(JdbcOdbcDriver.java:307)
at java.sql.DriverManager.getDriver(DriverManager.java:253)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
실패합니다. 이것은 내가 무슨 짓을 :
Copy all webapps from tomcat5 to tomcat7
Copy jaikoz.xml file from Conf/Catalina/localhost to tomcat7
Copy common/lib/mysql-connector-java-3.1.4-beta-bin.jar into webapps/jaikoz/WEB-INF/lib
난 그냥 응용 프로그램을 전쟁에 MySQL의 항아리를 넣어했습니다 있도록 tomcat5을에 공유지 폴더있을 것 같지 않습니다,하지만 어쩌면 그것은 잘못된 것입니다
내 ODBC 드라이버 (sun.jdbc.odbc.JdbcOdbcDriver) : jaikoz.xml 파일은 클래스 패스에서 발견 다른 JDBC 드라이버가 마치
<Context path="/jaikoz" displayname="jaikoz" docBase="../webapps/jaikoz" debug="0" privileged="true">
<Resource name="jdbc/jaikoz"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/jaikoz">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<!-- Maximum number of dB connections in pool. Make sure you
configure your mysqld max_connections large enough to handle
all of your db connections. Set to 0 for no limit.
-->
<parameter>
<name>maxActive</name>
<value>0</value>
</parameter>
<!-- Maximum number of idle dB connections to retain in pool.
Set to 0 for no limit.
-->
<parameter>
<name>maxIdle</name>
<value>0</value>
</parameter>
<!-- Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
-->
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>
<!-- MySQL dB username and password for dB connections -->
<parameter>
<name>username</name>
<value>********</value>
</parameter>
<parameter>
<name>password</name>
<value>**********</value>
</parameter>
<!-- Class name for mm.mysql JDBC driver -->
<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
<!-- The JDBC connection url for connecting to your MySQL dB.
The autoReconnect=true argument to the url makes sure that the
mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
connection. mysqld by default closes idle connections after 8 hours.
-->
<parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/jaikoz?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>
안녕하세요, http://tomcat.apache.org/tomcat-7.0-doc/jndi-datasource-examples-howto.html#DriverManager,_the_service_provider_mechanism_and_memory_leaks의 지침에 따라 작업하고 있습니다. Essentailly jaikoz.xml을 수정하고 web.xml에 섹션을 추가해야했습니다. 나중에 드라이버로 업데이트하겠습니다. –