从 Jetty 6 迁移到 Jetty 8

发布于 2025-01-05 16:31:29 字数 579 浏览 0 评论 0原文

我在简单的应用程序中使用 jetty6 作为嵌入式 servlet 容器。我决定将其更新到 Jetty 8。在jetty 6中启动服务器非常简单：

Server server = new Server(8080);
Context context = new Context(server, "/", Context.SESSIONS);
context.addServlet(MyServlet.class, "/communication-service");
server.start();

但在Jetty8中不起作用。不幸的是我找不到这个版本的任何简单的例子。无法实例化 Context 并出现错误，

an enclosing instance that contains
    org.eclipse.jetty.server.handler.ContextHandler.Context is required

因为它现在是一个内部类，而且也没有这样的构造函数。

大多数示例针对 6 号和 7 号码头。您能否提供如何在 jetty 8 启动 servlet 的简单示例？

原文

I use jetty6 in simple application as embedded servlet container. I decided to update it to Jetty 8.
In jetty 6 it was pretty simple to start the server:

Server server = new Server(8080);
Context context = new Context(server, "/", Context.SESSIONS);
context.addServlet(MyServlet.class, "/communication-service");
server.start();

but it doesn't work in Jetty8.
Unfortunately I can't find any simple example for this version. Can't instantiate Context with error

an enclosing instance that contains
    org.eclipse.jetty.server.handler.ContextHandler.Context is required

because now it is an inner class and also no such constructor.

Most examples are for jetty 6 and 7.
Could you please provide simple example how to start servlet at jetty 8?

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鱼忆七猫命九 2025-01-12 16:31:29

这是与您的代码等效的 Jetty 8。它仍然像以前一样简单，但 API 略有变化。

如果这对您不起作用，那么您可能遇到了类路径问题 - Jetty 8 被分成许多独立的 jar 文件，您将需要其中许多文件。至少你需要：

jetty-continuation
jetty-http
jetty-io
jetty-security
jetty-server
jetty-servlet
jetty-util
servlet-api

如果你有这些 jar，那么这段代码应该可以正常工作：

package test;

import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;

public class Jetty8Server {
    public static class MyServlet extends HttpServlet {
        protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
            response.setContentType("text/plain");
            response.getWriter().write(getClass().getName() + " - OK");
        }
    }
    public static void main(String[] args) throws Exception {
        Server server = new Server(8080);
        ServletContextHandler handler = new ServletContextHandler(ServletContextHandler.SESSIONS);
        handler.setContextPath("/"); // technically not required, as "/" is the default
        handler.addServlet(MyServlet.class, "/communication-service");
        server.setHandler(handler);
        server.start();
    }
}

This is the Jetty 8 equivalent to your code. It's still just as simple as it was before, however the API has changed slightly.

If this isn't working for you, then you probably have a classpath issue - Jetty 8 is separated into a lot of independent jar files, and you will need a number of them. At the very least you need:

jetty-continuation
jetty-http
jetty-io
jetty-security
jetty-server
jetty-servlet
jetty-util
servlet-api

If you have those jars, then this code should work fine:

package test;

import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;

public class Jetty8Server {
    public static class MyServlet extends HttpServlet {
        protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
            response.setContentType("text/plain");
            response.getWriter().write(getClass().getName() + " - OK");
        }
    }
    public static void main(String[] args) throws Exception {
        Server server = new Server(8080);
        ServletContextHandler handler = new ServletContextHandler(ServletContextHandler.SESSIONS);
        handler.setContextPath("/"); // technically not required, as "/" is the default
        handler.addServlet(MyServlet.class, "/communication-service");
        server.setHandler(handler);
        server.start();
    }
}

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