可以查看服务器上Request、Session、Cookie、Application的列表信息。查看是否安装常见的JAVA类库。查看服务器的内存使用情况。查看服务器的JVM相关的所有信息(版本、时区、编码、操作系统名称等)。-Can view the server Request, Session, Cookie, Application of a list of information. To see if the installation of common JAVA class library. See the server s memory usage. See server JVM all related information (version, time zone, coding, operating system name, etc.).