Question

异常堆栈跟踪没有提供太多信息，只是

javax.naming.OperationNoSupportedException

public static Connection getConnection(Context ctx, String factoryName) throws JMSException, NamingException {
    Object objfac = null;
    try {
        objfac = ctx.lookup(factoryName);
    } catch (NoClassDefFoundError e) {
        throw new NamingException("Lookup failed: "+e.toString());
    }
    if (objfac instanceof javax.jms.ConnectionFactory) {
        @SuppressWarnings("unchecked") // The environment is supposed to use String keys only
        Map<String, Object> env = (Map<String, Object>)ctx.getEnvironment();
        if(env.containsKey(Context.SECURITY_PRINCIPAL)) {
            String username = (String)env.get(Context.SECURITY_PRINCIPAL);
            String password = (String)env.get(Context.SECURITY_CREDENTIALS);
            return ((javax.jms.ConnectionFactory) objfac).createConnection(username, password);                
        }
        else {
            return ((javax.jms.ConnectionFactory) objfac).createConnection();
        }
    }
    throw new NamingException("Expected javax.jms.ConnectionFactory, found "+(objfac != null ? objfac.getClass().getName(): "null"));
}

堆栈跟踪是：

javax.naming.OperationNotSupportedException at com.solacesystems.jndi.SolJNDIInitialContextFactory $ SolJNDIInitialContextImpl.getEnvironment（SolJNDIInitialContextFactory.java:230）在javax.naming.InitialContext.getEnvironment（InitialContext.java:544）在javax.naming.InitialContext.getEnvironment（InitialContext.java:544） at org.apache.jmeter.protocol.jms.Utils.getConnection（Utils.java:155）在org.apache.jmeter.protocol.jms.client.Publisher。（Publisher.java:130）在org.apache.jmeter.protocol.jms.sampler.PublisherSampler.initClient（PublisherSampler.java:135）在org.apache.jmeter.protocol.jms.sampler.PublisherSampler.sample（PublisherSampler.java:154）在org.apache.jmeter.protocol.jms.sampler.BaseJMSSampler.sample（BaseJMSSampler.java:80）在org.apache.jmeter.threads.JMeterThread.process_sampler（JMeterThread.java:429）在org.apache.jmeter.threads.JMeterThread.run（JMeterThread.java:257）在java.lang.Thread.run（Thread.java:722）

Answer 1

您正在使用的JNDI实现不支持getEnvironment方法，这意味着该代码无法访问用于访问JMS服务器的任何凭据。这是我尝试修复的问题（如果不需要凭据，这可能仅适用于您的情况，我不确定）：

if (objfac instanceof javax.jms.ConnectionFactory) {
    @SuppressWarnings("unchecked") // The environment is supposed to use String keys only
    Map<String, Object> env = null;
    try {
       env = (Map<String, Object>)ctx.getEnvironment();
    } catch (javax.naming.OperationNotSupportedException ex) {}
    if(env != null && env.containsKey(Context.SECURITY_PRINCIPAL)) {
        String username = (String)env.get(Context.SECURITY_PRINCIPAL);
        String password = (String)env.get(Context.SECURITY_CREDENTIALS);
        return ((javax.jms.ConnectionFactory) objfac).createConnection(username, password);                
    }
    else {
        return ((javax.jms.ConnectionFactory) objfac).createConnection();
    }
}

为什么在调用getEnvironment（）时InitialContext会抛出命名异常？

1 个答案: