Jetty9 embedded 踩坑指南（轉https://my.oschina.net/dwbin/blog/2989487）

原文鏈接：https://my.oschina.net/dwbin/blog/2989487

第一部分依賴（網上說的亂七八糟實際上需要以下的內容才能完全支持jsp+jstl）：

先上版本

<jettyVersion>9.4.6.v20170531</jettyVersion>

實際依賴：

<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>jetty-server</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>jetty-webapp</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>jetty-util</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>jetty-io</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>jetty-annotations</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>apache-jsp</artifactId>
			<version>${jettyVersion}</version>
		</dependency>
		<dependency>
			<groupId>org.eclipse.jetty</groupId>
			<artifactId>apache-jstl</artifactId>
			<version>${jettyVersion}</version>
		</dependency>

然後是實際的代碼：

package dragonfly;
 
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
 
import org.apache.tomcat.InstanceManager;
import org.apache.tomcat.SimpleInstanceManager;
import org.eclipse.jetty.annotations.AnnotationConfiguration;
import org.eclipse.jetty.annotations.ServletContainerInitializersStarter;
import org.eclipse.jetty.apache.jsp.JettyJasperInitializer;
import org.eclipse.jetty.plus.annotation.ContainerInitializer;
import org.eclipse.jetty.plus.webapp.EnvConfiguration;
import org.eclipse.jetty.plus.webapp.PlusConfiguration;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.webapp.Configuration;
import org.eclipse.jetty.webapp.FragmentConfiguration;
import org.eclipse.jetty.webapp.JettyWebXmlConfiguration;
import org.eclipse.jetty.webapp.MetaInfConfiguration;
import org.eclipse.jetty.webapp.WebAppContext;
import org.eclipse.jetty.webapp.WebInfConfiguration;
import org.eclipse.jetty.webapp.WebXmlConfiguration;
 
public class WebsiteRunner {
 
	public static void main(String[] args) throws Exception {
		Server server = new Server(8080);
		QueuedThreadPool threadPool = new QueuedThreadPool();
		threadPool.setMaxThreads(5);
 
		WebAppContext context = new WebAppContext("src/main/webapp", "/");
		context.setAttribute("org.eclipse.jetty.server.webapp.ContainerIncludeJarPattern",
				".*/[^/]*servlet-api-[^/]*\\.jar$|.*/javax.servlet.jsp.jstl-.*\\.jar$|.*/[^/]*taglibs.*\\.jar$");
		context.setAttribute("javax.servlet.context.tempdir", "e:/tmp");
		context.setConfigurations(new Configuration[] { new AnnotationConfiguration(), new WebInfConfiguration(), new WebXmlConfiguration(),
				new MetaInfConfiguration(), new FragmentConfiguration(), new EnvConfiguration(), new PlusConfiguration(), new JettyWebXmlConfiguration() });
 
		
		context.setAttribute("org.eclipse.jetty.containerInitializers", jspInitializers());
		context.setAttribute(InstanceManager.class.getName(), new SimpleInstanceManager());
		context.addBean(new ServletContainerInitializersStarter(context), true);
		context.setClassLoader(new URLClassLoader(new URL[0], WebsiteRunner.class.getClassLoader()));
		
		server.setHandler(context);
		server.setStopAtShutdown(true);
		server.start();
		server.join();
	}
 
	private static List<ContainerInitializer> jspInitializers() {
		JettyJasperInitializer sci = new JettyJasperInitializer();
		ContainerInitializer initializer = new ContainerInitializer(sci, null);
		List<ContainerInitializer> initializers = new ArrayList<ContainerInitializer>();
		initializers.add(initializer);
		return initializers;
	}
 
}

必須有jspInitializers()跟

context.setAttribute("org.eclipse.jetty.server.webapp.ContainerIncludeJarPattern",
                ".*/[^/]*servlet-api-[^/]*\\.jar$|.*/javax.servlet.jsp.jstl-.*\\.jar$|.*/[^/]*taglibs.*\\.jar$");

具體原因不想深究了，網上坑多，大家讀文檔的時候小心。

PS：jetty官方的文檔也是坑，別信。

轉載於:https://my.oschina.net/dwbin/blog/2989487

網上找了很多個版本，也就這個比較好用。