报错如下：

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??? [INFO] No JSP support. Check that JSP jars are in lib/jsp and that the JSP option has been specified to start.jar

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??? 注意：jsp-2.1-glassfish是必要的，如果使用jetty-jsp-2.1貌似还是会报这个错。

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??? 以下是maven的配置：

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>cn.sh.xxxxxx</groupId>
  <artifactId>project</artifactId>
  <version>1.0</version>
  <packaging>jar</packaging>

  <name>project</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <jettyVersion>7.2.0.v20101020</jettyVersion>
  </properties>

  <dependencies>
    <dependency>
		<groupId>junit</groupId>
		<artifactId>junit</artifactId>
		<version>4.4</version>
		<scope>test</scope>
    </dependency>
    <dependency>
		<groupId>org.mortbay.jetty</groupId>
		<artifactId>servlet-api-2.5</artifactId>
		<version>6.1.14</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.mortbay.jetty</groupId>
      <artifactId>jsp-2.1-glassfish</artifactId>
      <version>2.1.v20100127</version>
    </dependency>
  </dependencies>
</project>