使用jetty插件启动项目，无法访问jsp页面

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

修改jetty的插件依赖，其中jsp-2.1-glassfish是必需的。

全部的jetty插件依赖如下：

<!--jetty插件-->
<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-server</artifactId>
    <version>${jetty.version}</version>
</dependency>
<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-webapp</artifactId>
    <version>${jetty.version}</version>
</dependency>
<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-util</artifactId>
    <version>${jetty.version}</version>
</dependency>
<dependency>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-io</artifactId>
    <version>${jetty.version}</version>
</dependency>
<dependency>
    <groupId>org.mortbay.jetty</groupId>
    <artifactId>jsp-2.1-glassfish</artifactId>
    <version>2.1.v20100127</version>
</dependency>

参考：http://akunamotata.iteye.com/blog/1330417