Jetty 开发指南：嵌入式开发示例
Jetty具有嵌入各种应用程序的丰富历史。 在本节中，我们将向您介绍我们的git存储库中的embedded-jetty-examples项目下的一些简单示例。
重要：生成此文档时，将直接从我们的git存储库中提取这些文件。 如果行号不对齐，请随时在github中修复此文档，并向我们提供拉取请求，或者至少打开一个问题以通知我们该差异。
简单的文件服务器
此示例显示如何在Jetty中创建简单文件服务器。 它非常适合需要实际Web服务器来获取文件的测试用例，它可以很容易地配置为从src / test / resources下的目录提供文件。 请注意，这在文件缓存中没有任何逻辑，无论是在服务器内还是在响应上设置适当的标头。 它只是几行，说明了提供一些文件是多么容易。
// // ======================================================================== // Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd. // ------------------------------------------------------------------------ // All rights reserved. This program and the accompanying materials // are made available under the terms of the Eclipse Public License v1.0 // and Apache License v2.0 which accompanies this distribution. // // The Eclipse Public License is available at // http://www.eclipse.org/legal/epl-v10.html // // The Apache License v2.0 is available at // http://www.opensource.org/licenses/apache2.0.php // // You may elect to redistribute this code under either of these licenses. // ======================================================================== // package org.eclipse.jetty.embedded; import org.eclipse.jetty.server.Handler; import org.eclipse.jetty.server.Server; import org.eclipse.jetty.server.handler.DefaultHandler; import org.eclipse.jetty.server.handler.HandlerList; import org.eclipse.jetty.server.handler.ResourceHandler; /** * Simple Jetty FileServer. * This is a simple example of Jetty configured as a FileServer. */ public class FileServer { public static void main(String[] args) throws Exception { // Create a basic Jetty server object that will listen on port 8080. Note that if you set this to port 0 // then a randomly available port will be assigned that you can either look in the logs for the port, // or programmatically obtain it for use in test cases. Server server = new Server(8080); // Create the ResourceHandler. It is the object that will actually handle the request for a given file. It is // a Jetty Handler object so it is suitable for chaining with other handlers as you will see in other examples. ResourceHandler resource_handler = new ResourceHandler(); // Configure the ResourceHandler. Setting the resource base indicates where the files should be served out of. // In this example it is the current directory but it can be configured to anything that the jvm has access to. resource_handler.setDirectoriesListed(true); resource_handler.setWelcomeFiles(new String[]{ "index.html" }); resource_handler.setResourceBase("."); // Add the ResourceHandler to the server. HandlerList handlers = new HandlerList(); handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() }); server.setHandler(handlers); // Start things up! By using the server.join() the server thread will join with the current thread. // See "http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Thread.html#join()" for more details. server.start(); server.join(); } }
启动后你应该可以导航到http：// localhost：8080 / index.html（假设一个在资源库目录中）。
Maven坐标
要在项目中使用此示例，您需要声明以下Maven依赖项。
<dependency> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-server</artifactId> <version>${project.version}</version> </dependency>
Split File Server
此示例构建在简单文件服务器上，以显示如何将多个ResourceHandler链接在一起可以聚合多个目录以在单个路径上提供内容，以及如何将这些目录与ContextHandler链接在一起。
// // ======================================================================== // Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd. // ------------------------------------------------------------------------ // All rights reserved. This program and the accompanying materials // are made available under the terms of the Eclipse Public License v1.0 // and Apache License v2.0 which accompanies this distribution. // // The Eclipse Public License is available at // http://www.eclipse.org/legal/epl-v10.html // // The Apache License v2.0 is available at // http://www.opensource.org/licenses/apache2.0.php // // You may elect to redistribute this code under either of these licenses. // ======================================================================== // package org.eclipse.jetty.embedded; import java.io.File; import org.eclipse.jetty.server.Connector; import org.eclipse.jetty.server.Handler; import org.eclipse.jetty.server.Server; import org.eclipse.jetty.server.ServerConnector; import org.eclipse.jetty.server.handler.ContextHandler; import org.eclipse.jetty.server.handler.ContextHandlerCollection; import org.eclipse.jetty.server.handler.ResourceHandler; import org.eclipse.jetty.toolchain.test.MavenTestingUtils; import org.eclipse.jetty.util.resource.Resource; /** * A {@link ContextHandlerCollection} handler may be used to direct a request to * a specific Context. The URI path prefix and optional virtual host is used to * select the context. */ public class SplitFileServer { public static void main( String[] args ) throws Exception { // Create the Server object and a corresponding ServerConnector and then // set the port for the connector. In this example the server will // listen on port 8090. If you set this to port 0 then when the server // has been started you can called connector.getLocalPort() to // programmatically get the port the server started on. Server server = new Server(); ServerConnector connector = new ServerConnector(server); connector.setPort(8090); server.setConnectors(new Connector[] { connector }); // Create a Context Handler and ResourceHandler. The ContextHandler is // getting set to "/" path but this could be anything you like for // builing out your url. Note how we are setting the ResourceBase using // our jetty maven testing utilities to get the proper resource // directory, you needn't use these, you simply need to supply the paths // you are looking to serve content from. ResourceHandler rh0 = new ResourceHandler(); ContextHandler context0 = new ContextHandler(); context0.setContextPath("/"); File dir0 = MavenTestingUtils.getTestResourceDir("dir0"); context0.setBaseResource(Resource.newResource(dir0)); context0.setHandler(rh0); // Rinse and repeat the previous item, only specifying a different // resource base. ResourceHandler rh1 = new ResourceHandler(); ContextHandler context1 = new ContextHandler(); context1.setContextPath("/"); File dir1 = MavenTestingUtils.getTestResourceDir("dir1"); context1.setBaseResource(Resource.newResource(dir1)); context1.setHandler(rh1); // Create a ContextHandlerCollection and set the context handlers to it. // This will let jetty process urls against the declared contexts in // order to match up content. ContextHandlerCollection contexts = new ContextHandlerCollection(); contexts.setHandlers(new Handler[] { context0, context1 }); server.setHandler(contexts); // Start things up! server.start(); // Dump the server state System.out.println(server.dump()); // The use of server.join() the will make the current thread join and // wait until the server is done executing. // See http://docs.oracle.com/javase/7/docs/api/java/lang/Thread.html#join() server.join(); } }
启动后，你应该可以导航到http：// localhost：8090 / index.html（假设一个在资源库目录中），你可以正常访问。 任何文件请求都将在第一个资源处理程序中查找，然后在第二个资源处理程序中查找，依此类推。
Maven Coordinates
要在项目中使用此示例，您需要声明以下maven依赖项。 我们建议您不要在实际应用程序中使用工具链依赖项。
<dependency> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-server</artifactId> <version>${project.version}</version> </dependency> <dependency> <groupId>org.eclipse.jetty.toolchain</groupId> <artifactId>jetty-test-helper</artifactId> <version>2.2</version> </dependency>
参考资料：http://www.eclipse.org/jetty/documentation/9.4.x/embedded-examples.html
