无法从 Tomcat 中查找 EJB bean

Question

EJB 应用程序部署到服务器 A 上的 Glassfish 3.1.2.2，servlet 部署到服务器 B 上的 Tomcat 7。从独立应用程序查找工作正常，从 servlet 查找抛出 NameNotFoundException。 两种情况下使用的库集（来自 Glassfish 模块目录）完全相同。所以我们假设需要对 Tomcat 进行一些额外的配置。

从 servlet 部署到 Tomcat 的相关代码：

InitialContext ctx;
try {
   Properties props = new Properties();
   props.setProperty("org.omg.CORBA.ORBInitialHost", "localhost");
   props.setProperty("org.omg.CORBA.ORBInitialPort", "3700");
   System.setProperty("java.security.auth.login.config", "jaas.config");
   ProgrammaticLogin pl = new ProgrammaticLogin();
   pl.login("user", "s3cret".toCharArray(), "file", true);
   ctx = new InitialContext(props);
   HelloBean helloBean = (HelloBean) ctx.lookup("java:global/HelloApp/HelloBeanImpl!app.hello.HelloBean");
} catch (Exception e) {
   e.printStackTrace(System.err);
}

异常总是一样的，getCause中没有有用的信息：

javax.naming.NameNotFoundException: Name [global/HelloApp/HelloBeanImpl!app.hello.HelloBean] is not bound in this Context. Unable to find [global].
   at org.apache.naming.NamingContext.lookup(NamingContext.java:819)
   at org.apache.naming.NamingContext.lookup(NamingContext.java:167)
   at org.apache.naming.SelectorContext.lookup(SelectorContext.java:156)
   at javax.naming.InitialContext.lookup(InitialContext.java:411)
   at app.servlet.HelloServlet.doGet(HelloServlet.java:28)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
   at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
   at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
   at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.lang.Thread.run(Thread.java:745)

Answer 1

好的，我们现在可以从 Tomcat 中查找安全 bean。您需要将许多 Glassfish 特定的 jar 放到类路径中才能正常工作。我们在 catalina.properties 中使用了共享加载器来定义从 Glassfish 模块目录到 jar 的路径（您可能需要排除所有 servlet 和 jsp jar 以避免与 Tomcat 自己的 lib 冲突）。还要确保您不会不小心将两个 security.jar 放到类路径中。工作配置如下所示：

InitialContext ctx;
try {
    Properties props = new Properties();
    props.setProperty("org.omg.CORBA.ORBInitialHost", "localhost");
    props.setProperty("org.omg.CORBA.ORBInitialPort", "3700");
    props.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sun.enterprise.naming.SerialInitContextFactory");
    props.setProperty(Context.STATE_FACTORIES, "com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl");
    props.setProperty(Context.URL_PKG_PREFIXES, "com.sun.enterprise.naming");
    System.setProperty("java.security.auth.login.config", "./jaas.config");
    ProgrammaticLogin pl = new ProgrammaticLogin();
    boolean loginSuccessfull = pl.login("username", "password".toCharArray());
    ctx = new InitialContext(props);
    HelloBean helloBean = (HelloBean) ctx.lookup("java:global/HelloApp/HelloBeanImpl!app.hello.HelloBean");
    resp.getOutputStream().print(helloBean.sayHelloTo("user"));
} catch (Exception e) {
    e.printStackTrace(System.err);
}