一朋友说要修改tomcat的session cookie name，我翻了一下tomcat各个版本的源码（tomcat4已经没人用了，所以除外），帮朋友解决了问题，现总结了一下
修改后效果
1、tomcat5修改方法
在启动项中增加org.apache.catalina.SESSION_COOKIE_NAME参数
linux
JAVA_OPTS=’-Dorg.apache.catalina.SESSION_COOKIE_NAME=yousessionname‘win
set JAVA_OPTS=”-Dorg.apache.catalina.SESSION_COOKIE_NAME=yousessionname“2、tomcat6和tomcat7修改方法相同
在Context容器标签上增加sessionCookieName参数
<Context path=”/” docBase=”webapp” reloadable=”false”sessionCookieName=”yoursessionname”></Context>
3、为啥这样就好用呢？
tomcat5时增加参数对所有Context生效，影响甚大，所以到以后的版本就仅针对Context设置了
tomcat5源码如下
public final class Globals
/**
* The name of the cookie used to pass the session identifier back
* and forth with the client.
*/
public static final String SESSION_COOKIE_NAME =
System.getProperty(“org.apache.catalina.SESSION_COOKIE_NAME”,
“JSESSIONID”);tomcat6和tomcat7的源码差不多，如下
public class StandardContext
….省略若干
/**
* The name to use for session cookies. <code>null</code> indicates that
* the name is controlled by the application.
*/
private String sessionCookieName;
/**
* Gets the name to use for session cookies.
*
* @return  The value of the default session cookie name or null if not
*          specified
*/
public String getSessionCookieName() {
return sessionCookieName;
}/**
* Sets the name to use for session cookies. Overrides any setting that
* may be specified by the application.
*
* @param sessionCookieName   The name to use
*/
public void setSessionCookieName(String sessionCookieName) {
String oldSessionCookieName = this.sessionCookieName;
this.sessionCookieName = sessionCookieName;
support.firePropertyChange(“sessionCookieName”,
oldSessionCookieName, sessionCookieName);
}PS:需要修改其它参数可以直接翻看源代码或查看tomcat在线文档