代码如下：

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;

public class launcher {

	public static void main(String[] args) {

        Server server = new Server(8080);

        try {

        	WebAppContext context = new WebAppContext();
        	context.setContextPath("/test");

            context.setResourceBase("I://Test//flsh");
        	context.setDescriptor("I://Test//flsh//WEB-INF//web2.xml");  

            server.setHandler(context);

            server.start();
            server.join();
        } catch (Exception e) {
            e.printStackTrace();
        }
	}
}

 

其中I:/Test/flsh的目录结构为：

line

其中I:/Test/flsh/WEB-INF的目录结构为：

line

 

其中文件web.xml的内容是：

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
   xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
   metadata-complete="false"
   version="3.1"> 

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

</web-app>

 

其中index.jsp的内容是：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=GBK">
	<body>
		aaa
	</body>
</html>

 

通过http://localhost:8080/test/即可访问：

line

 

如果出现异常“Unsupported major.minor version 51.0”，通常是JDK版本不匹配引起的，请参见《启动Jetty9出现异常Unsupported major.minor version 51.0》。

如果出现异常“org.apache.jasper.JasperException: java.lang.IllegalStateException: No org.apache.tomcat.InstanceManager set in ServletContext”，通常是JAR包问题，异常信息为：
HTTP ERROR 500
Problem accessing /test/. Reason:
Server Error
Caused by:
org.apache.jasper.JasperException: java.lang.IllegalStateException: No org.apache.tomcat.InstanceManager set in ServletContext
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:177)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:751)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:566)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:596)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:498)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:191)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:72)
at org.eclipse.jetty.servlet.DefaultServlet.doGet(DefaultServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:751)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:566)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1111)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:498)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1045)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:98)
at org.eclipse.jetty.server.Server.handle(Server.java:461)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:284)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:534)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: No org.apache.tomcat.InstanceManager set in ServletContext
at org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(InstanceManagerFactory.java:32)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:171)
… 37 more

 

此时可尝试通过如下方式解决：

（1）清空Java Build Path->Libraries中的所有Jar包。

line

（2）只添加Jerry的lib目录下的所有Jar包，及lib/jsp目录下的所有Jar包。然后Clean Project，再启动即可。

line