我们正在将Struts 1.2项目从JDK 1.6迁移到1.8，并将应用程序服务器jboss5.1迁移到tomcat 8.0。数据库连接工作正常，初始页面正在加载和填充一些数据。但是，当我执行任何操作（“提交”按钮）时，它将引发异常javax.naming.NamingException: Cannot create resource instance相同的代码在jboss 5.1中工作，但在Tomcat 8中出现错误。
但是我怀疑该错误的原因是UserTransaction需要在context.xml中单独定义，但不确定。请告诉我。
UserTransaction ut = (UserTransaction) myCntxt.lookup("java:comp/UserTransaction");
如果需要定义UserTransaction，请让我知道如何在Tomcat服务器中进行配置？
在META-INF / context.xml下的context.xml中添加了数据库配置
<Resource name="jdbc/Test1"
auth="Container"
type="javax.sql.DataSource"
maxTotal="100"
maxIdle="30"
maxWaitMillis="10000"
username="xxxxx"
password="xxxxx"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@xxxx:1527:xxxx" />
<Resource name="jdbc/Test2"
auth="Container"
type="javax.sql.DataSource"
maxTotal="100"
maxIdle="30"
maxWaitMillis="10000"
username="xxxxx"
password="xxxxx"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@xxxx:1527:xxxx" />
在{project} /WEB-INF/web.xml下的web.xml中添加了数据源引用
<resource-ref>
<description>Oracle Datasource</description>
<res-ref-name>jdbc/Test1</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<resource-ref>
<description>Oracle Datasource</description>
<res-ref-name>jdbc/Test2</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
样例代码
public static void dbInit(String test1dataSourceReference,String test2dataSourceReference) throws Exception
{
Context ctx = new InitialContext();
tds =(DataSource) ctx.lookup("java:comp/env/" + test1dataSourceReference);
cds = (DataSource) ctx.lookup("java:comp/env/" + test2dataSourceReference);
}
堆栈跟踪：
Dec 25, 2019 7:28:07 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 25, 2019 7:28:07 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true
Dec 25, 2019 7:28:07 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 25, 2019 7:28:07 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 25, 2019 7:28:08 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.logic.LocalStrings', returnNull=true
Dec 25, 2019 7:28:08 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 25, 2019 7:28:08 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 25, 2019 7:28:22 AM org.apache.struts.action.RequestProcessor processException
WARNING: Unhandled Exception thrown: class javax.naming.NamingException
Dec 25, 2019 7:28:22 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [action] in context with path [/policy] threw exception [javax.naming.NamingException: Cannot create resource instance] with root cause
javax.naming.NamingException: Cannot create resource instance
at org.apache.naming.factory.FactoryBase.getObjectInstance(FactoryBase.java:96)
at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
at org.apache.naming.NamingContext.lookup(NamingContext.java:847)
at org.apache.naming.NamingContext.lookup(NamingContext.java:158)
at org.apache.naming.NamingContext.lookup(NamingContext.java:835)
at org.apache.naming.NamingContext.lookup(NamingContext.java:172)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:157)
at javax.naming.InitialContext.lookup(Unknown Source)
at com.db.DbQuery.saveAppRejValue(DbQuery.java:798)
at com.actions.PolicyAction.executeDisplay(PolicyAction.java:298)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
参考方案
如TomEE Comparison page所示，Tomcat不支持JTA（JSR 907）：
您要么需要删除JTA代码，要么将另一个之类的EE服务器视为更简单的升级路径。
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