java获取jdk、系统、服务器等信息详解编程语言

1、获取jdk信息

System.out.println(System.getProperty("java.version"));      
        System.out.println(System.getProperty("java.vendor"));      
        System.out.println(System.getProperty("java.vendor.url"));      
        System.out.println(System.getProperty("java.home"));      
        System.out.println(System.getProperty("java.vm.specification.version"));      
        System.out.println(System.getProperty("java.vm.specification.vendor"));      
        System.out.println(System.getProperty("java.vm.specification.name"));      
        System.out.println(System.getProperty("java.vm.version"));      
        System.out.println(System.getProperty("java.vm.vendor"));      
        System.out.println(System.getProperty("java.vm.name"));      
        System.out.println(System.getProperty("java.specification.version"));      
        System.out.println(System.getProperty("java.specification.vendor"));      
        System.out.println(System.getProperty("java.specification.name"));      
        System.out.println(System.getProperty("java.class.version"));      
        System.out.println(System.getProperty("java.class.path"));      
        System.out.println(System.getProperty("java.library.path"));      
        System.out.println(System.getProperty("java.io.tmpdir"));      
        System.out.println(System.getProperty("java.compiler"));      
        System.out.println(System.getProperty("java.ext.dirs")); 

2、获取系统信息

System.out.println(System.getProperty("os.name"));      
        System.out.println(System.getProperty("os.arch"));      
        System.out.println(System.getProperty("os.version"));      
        System.out.println(System.getProperty("file.separator"));      
        System.out.println(System.getProperty("path.separator"));      
        System.out.println(System.getProperty("line.separator"));      
        System.out.println(System.getProperty("user.name"));      
        System.out.println(System.getProperty("user.home"));                      
        System.out.println(System.getProperty("user.dir")); 

3.获取Tomcat的版本 
<%= application.getServerInfo() %> 

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几个常用Request.ServerVariables的中文 

本文件ip路径：<%=”http://” & request.servervariables(“server_name”)&request.servervariables(“script_name”) %> 

本机ip:<%=request.servervariables(“remote_addr”)%> 

服务器名:<%=Request.ServerVariables(“SERVER_NAME”)%> 

服务器IP:<%=Request.ServerVariables(“LOCAL_ADDR”)%> 

服务器端口:<%=Request.ServerVariables(“SERVER_PORT”)%> 

服务器时间:<%=now%> 

IIS版本:<%=Request.ServerVariables(“SERVER_SOFTWARE”)%> 

脚本超时时间:<%=Server.ScriptTimeout%> 

本文件路径:<%=server.mappath(Request.ServerVariables(“SCRIPT_NAME”))%> 

服务器CPU数量:<%=Request.ServerVariables(“NUMBER_OF_PROCESSORS”)%> 

服务器解译引擎:<%=ScriptEngine & “/”& ScriptEngineMajorVersion&”.”&ScriptEngineMinorVersion&”.”& ScriptEngineBuildVersion %> 

服务器操作系统:<%=Request.ServerVariables(“OS”)%> 

支持的文件类型：<%=Request.ServerVariables(“HTTP_Accept”)%> 

访问的文件路径：<%=Request.ServerVariables(“HTTP_url”)%> 

用户代理的信息：<%=Request.ServerVariables(“HTTP_USER_AGENT”)%> 

获取url中的文件名和传过来的值:request.ServerVariables(“script_name”)+”?”+request.ServerVariableS(“QUERY_STRING