Servlets 如何将servlet动态添加到jetty服务器？

我创建了一个jetty服务器，并希望以编程方式动态添加servlet

我设置了日志记录和控制台，然后继续创建服务器，如下所示：

Connector               httpConn        = null;
Connector               httpsConn       = null;
HandlerCollection       handlers        = new HandlerCollection();
httpConn = new SelectChannelConnector();
httpConn.setPort( httpPort );
httpConn.setName( "HTTPConnector" );  // simillar setup for httpsConn if needed

contextHandlers = new ContextHandlerCollection();
if( launchServlets ) {
    // this is more or less the same servlet creation code as below but for launching
    // static servlets (in this example, there are none)
    holders = initializeServlets( configFilePath );
}
handlers.addHandler( contextHandlers );

server = new Server();
if( httpConn != null ) {
    server.addConnector( httpConn );
}
if( httpsConn != null ) {
    server.addConnector( httpsConn );
}

server.setGracefulShutdown( 1000 ); /
server.setStopAtShutdown( true );
server.setHandler( handlers );
server.start();

if( launchServlets ) {
    // Catch any exception that occurs during servlet init()
    // (must be called after server.start() )
    for( int i = 0; i < holders.length; i++ ) {
        if( holders[ i ] != null ) {
            Exception initEx = holders[ i ].getUnavailableException();
            if( initEx != null ) {
                server.stop();
                throw initEx;
            }
        }
    }
}

虽然我的动态servlet启动代码看起来正常工作，但控制台没有显示servlet正在初始化。当launchServlets=true时，代码将静态地启动servlet，一切正常，但我希望动态地启动它们

我是否必须手动使servlet初始化（我以为servlet被隔离到它们自己的内存空间中）？我如何告诉Jetty启动新的Servlet

更新：到目前为止，我唯一能够启动servlet的方法是通过server.stop（）/server.join（）/server.start（）。我想添加servlet（并删除——但这是一个额外的问题）以不中断对现有servlet的服务

我使用的是jetty-all-server-8.1.3和servlet api 3.0

---

提前感谢您的帮助/提示

我不确定这样做是否安全，但我已经通过在ServletContextHandler（）上调用start（）来启动serlvlet，而不是停止和启动服务器

这对8.1.3和9.2.4都有效（我在升级到ServletAPI的3.1的同时也升级到了9.2.4）

希望这能帮助其他有兴趣做类似事情的人。

Tombstone！真正地我很确定大部分的观点都是我的！有介绍CS作业问题的人在这里获得更多投票。

boolean isSecureOnly = false;  // function that decides suppressed for now
String[] connectors;

MyServlet myServlet = new MyServlet();

ServletHolder holder = new ServletHolder( myServlet );
holder.setInitParameter( Constants.CONF_INIT_STRING_PARAM, configString );
holder.setInitParameter( Constants.CONF_INIT_NAME_PARAM, myName );
ServletContextHandler handler = new ServletContextHandler();
if( details != null ) {
    details.sch = handler;
}
String contextPath = MyConfig.getContextPath( myProps, myName );
handler.setContextPath( contextPath );
handler.setAllowNullPathInfo( true );

// bind the servlet to the connectors it should be listening to
if( isSsl ) {
    if( isSecureOnly ) {
        connectors = new String[ 1 ];
        connectors[0] = Constants.CONF_HTTPS_CONNECTOR;
    } else {
        connectors = new String[ 2 ];
        connectors[0] = Constants.CONF_HTTPS_CONNECTOR;
        connectors[1] = Constants.CONF_HTTP_CONNECTOR;
    }
} else {
    if( isSecureOnly ) {
    throw new ConfigException( 50051 );
    }
    connectors = new String[ 1 ];
    connectors[0] = Constants.CONF_HTTP_CONNECTOR;
}
handler.setConnectorNames( connectors );

if( myName != null ) {
    handler.setDisplayName( MyMessage.message( 10025, myName ) );
} else {
    handler.setDisplayName( MyMessage.message( 10001 ) );
}
handler.addServlet( holder, "/*" );
contextHandlers.addHandler( handler );

contextHandlers.mapContexts();
Exception initEx = holder.getUnavailableException();
if( initEx != null ) {
    // deal with error
}