由于Java程序，Tomcat未启动

Question

我有一个调用MMQ侦听器的Java Servlet。我正在Tomcat服务器中部署应用程序

AppServlet.java

package com.cisco.cstg.platform;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AppServlet extends HttpServlet {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;


    MessageListenerImpl m;

    public void init(ServletConfig config) throws ServletException {
        //super.init(config);
        //MainApp.main(null);
        m = MainApp.init();
        MainApp.start(m);
    }

     public void doGet(HttpServletRequest req, HttpServletResponse res)
            throws ServletException, IOException {
        PrintWriter out = res.getWriter();
        boolean dbStatus = EMANApi.isDBUpAndRunning();
        if (dbStatus == true) {
            out.print("SUCCESS");
        } else {
            out.print("FAILED");
        }
    }

    public void destroy() {

        MainApp.stop(m);

    }

}

package com.cisco.cstg.platform;

import com.cisco.cstg.utilities.UtilClass;

public class MainApp {

    public static final org.apache.log4j.Logger log = org.apache.log4j.Logger
            .getLogger(MainApp.class);
    // Input arguments
    public static long keepAliveMinutes = 1L;
    public static boolean debug;

    public static void main(String args[]) {
        MainApp.fetchArgs(args);

        initLogging();
        if (debug)
            log.info(UtilClass.getCurrentDate()
                    + "Run Connector Message App for reading the queue");

        MessageListenerImpl m = MainApp.init();
        MainApp.start(m);
        UtilClass.keepAlive(keepAliveMinutes);
        // MainApp.stop(m);

        if (debug)
            log.info(UtilClass.getCurrentDate()
                    + "Run Connector CSOC Message App");

    }

    private static void fetchArgs(String[] args) {
        debug = log.isDebugEnabled();
        keepAliveMinutes = Integer.MAX_VALUE; // value is 2147483647 ms

        if (debug)
            log.info(UtilClass.getCurrentDate() + "Found keepAliveMinutes: "
                    + keepAliveMinutes + " debug: " + debug);

    }

    private static void initLogging() {

        if (debug)
            log.info(UtilClass.getCurrentDate() + "::initLogging Started");

        if (debug)
            log.info(UtilClass.getCurrentDate()
                    + "::Log level set"
                    + UtilClass.getProperties().getProperty(
                            UtilClass.PropertyKeys.PROP_LOG_LEVEL));

    }

    public static MessageListenerImpl init() {

        if (debug)
            log.info(UtilClass.getCurrentDate()
                    + "::Instantiating MessageListenerImpl");

        MessageListenerImpl m = new MessageListenerImpl();

        if (debug)
            log.info(UtilClass.getCurrentDate()
                    + "::Instantiated MessageListenerImpl");

        return m;
    }

    public static void start(MessageListenerImpl m) {

        if (debug)
            log.info(UtilClass.getCurrentDate() + "::Starting instance");
        m.start();
        if (debug)
            log.info(UtilClass.getCurrentDate() + "::Started instance");
    }

    public static void stop(MessageListenerImpl m) {

        if (debug)
            log.debug(UtilClass.getCurrentDate() + "::Stopping instance");
        m.stop();
        System.exit(1); // to stop the java program
        if (debug)
            log.debug(UtilClass.getCurrentDate() + "::Stopped instance");

    }

}

<session-config>
    <session-timeout>60</session-timeout>
</session-config>
<display-name>Archetype Created Web Application</display-name>
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>com.cisco.cstg.platform.AppServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/eman</url-pattern>
</servlet-mapping>

Answer 1

当我在MainApp.init（）方法中调用MainApp中的debug和其他方法时，这个问题得到了解决。