向正在运行的服务器添加处理程序是一种常见模式,但文档根本不清楚(“嵌入码头”教程中的所有示例都启动服务器after配置。)据我所知人们正在遵循这些方法:
1)使用 HandlerCollection(boolean mutableWhenRunning) ctor 添加/删除处理程序
2)显式添加并启动处理程序
我观察到 Jetty 9.1.4 中不需要 #2,但 Jetty 9.2.14 及之后的版本需要它(顺便说一句,这些版本号被 Maven 选择为 Jersey 依赖项,与此问题完全无关。)例如:
// after server creation ...
ContextHandlerCollection contextHandlerCollection = new ContextHandlerCollection();
jettyServer.setHandler(contextHandlerCollection);
jettyServer.start();
// ...
ServletContextHandler newSCH= new ServletContextHandler(ServletContextHandler.SESSIONS);
newSCH.setResourceBase(System.getProperty("java.io.tmpdir"));
newSCH.setContextPath("/servlets");
ServletHolder newHolder = new SwServletHolder(servlet);
newSCH.addServlet(newHolder, "/*");
contextHandlerCollection.addHandler(newSCH);
try {
newSCH.start(); // needed from about 9.2
} catch (Exception e) {
logger.info("Exception starting ServletContextHandler for Jetty", e);
}
为了添加 SOAP 上下文,这是一个在 9.1.4 上“曾经有效”的代码(在 9.2.14 上它报告 404):
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import javax.jws.WebService;
import javax.xml.ws.Endpoint;
import org.eclipse.jetty.http.spi.JettyHttpServerProvider;
import org.eclipse.jetty.http.spi.HttpSpiContextHandler;
import org.eclipse.jetty.http.spi.JettyHttpContext;
import org.eclipse.jetty.http.spi.JettyHttpServer;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import com.sun.net.httpserver.HttpContext;
public class JettyJaxWs {
public static void main(String[] args) throws Exception {
Server server = new Server(7777);
ContextHandlerCollection contextHandlerCollection = new ContextHandlerCollection();
server.setHandler(contextHandlerCollection);
server.start();
HttpContext context = buildOrig(server, "/ws");
MyWebService ws = new MyWebService();
Endpoint endpoint = Endpoint.create(ws);
endpoint.publish(context);
// access wsdl on http://localhost:7777/ws/MyWebService?wsdl
}
@WebService
public static class MyWebService {
public String hello(String s) {
return "hi " + s;
}
}
public static HttpContext buildOrig(Server server, String contextString) throws Exception {
JettyHttpServerProvider.setServer(server);
return new JettyHttpServerProvider().createHttpServer(new InetSocketAddress(7777), 5).createContext(contextString);
}
后来我不得不对最后一个方法这样做(不确定是否有更好的方法):
public static HttpContext buildNew(Server server, String contextString) {
JettyHttpServer jettyHttpServer = new JettyHttpServer(server, true);
JettyHttpContext ctx = (JettyHttpContext) jettyHttpServer.createContext(contextString);
try {
Method method = JettyHttpContext.class.getDeclaredMethod("getJettyContextHandler");
method.setAccessible(true);
HttpSpiContextHandler contextHandler = (HttpSpiContextHandler) method.invoke(ctx);
contextHandler.start();
} catch (Exception e) {
e.printStackTrace();
}
return ctx;
}