Java Servlet/JSP容器配置 session id

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    <display-name>hello-jee5</display-name>
    <session-config>
        <session-timeout>30</session-timeout>
        <!-- Servlet 3.0规范可以使用该配置,使session id在URL中,而不是使用cookie -->
        <!-- <tracking-mode>URL</tracking-mode> -->
    </session-config>
    <context-param>
        <param-name>org.eclipse.jetty.servlet.SessionCookie</param-name>
        <param-value>SID</param-value>
    </context-param>
    <context-param>
        <param-name>org.eclipse.jetty.servlet.SessionIdPathParameterName</param-name>
        <param-value>sid</param-value>
    </context-param>

    <session-config>
        <enable-cookies>false</enable-cookies>
       <enable-url-rewriting>true</enable-url-rewriting>       
      </session-config>    
    
    <web-app id="/hello-jee5" root-directory="D:\Workspace\_EclipseKepler\hello-jee5\src\main\webapp">
            <!-- configurate web directory, app.home=maven项目根目录,app.name=项目构建后的名字 -->
            <prologue>
                <class-loader>
                    <!--configurate class directory-->
                    <compiling-loader path="D:\Workspace\_EclipseKepler\hello-jee5\target\classes"/> 
                    <!--configurate library directory-->
                    <library-loader path="D:\Workspace\_EclipseKepler\hello-jee5\target\hello-jee5-0.0.1-SNAPSHOT\WEB-INF\lib"/>
                </class-loader>
            </prologue>
        </web-app>