jsp获取JDK、系统、服务器信息

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")); 

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"));   

获取Tomacat信息

<%= application.getServerInfo() %> 

Properties props = System.getProperties();
        Runtime runtime = Runtime.getRuntime();
        long freeMemoery = runtime.freeMemory();
        long totalMemory = runtime.totalMemory();
        long usedMemory = totalMemory - freeMemoery;
        long maxMemory = runtime.maxMemory();
        long useableMemory = maxMemory - totalMemory + freeMemoery;
        model.addAttribute("member_count", member_count);
        model.addAttribute("props", props);
        model.addAttribute("freeMemoery", freeMemoery);
        model.addAttribute("totalMemory", totalMemory);
        model.addAttribute("usedMemory", usedMemory);
        model.addAttribute("maxMemory", maxMemory);
        model.addAttribute("useableMemory", useableMemory);


操作系统版本: 
                        ${props['os.name']!} ${props['os.version']!}
                    
                    
                        操作系统类型: 
                        ${props['os.arch']!} ${props['sun.arch.data.model']!}位
                    
                    
                        Java运行环境: 
                        ${props['java.runtime.name']!} ${props['java.runtime.version']!}
                    
                    
                        JAVA虚拟机: 
                        ${props['java.vm.name']!} ${props['java.vm.version']!}
                    
                    
                        系统帐号: 
                        ${props['user.name']!}
                    
                    
                        内存(MB): 
                        已用:${(usedMemory/1024/1024)?string("0.##")} / 剩余:${(useableMemory/1024/1024)?string("0.##")} / 最大:${(maxMemory/1024/1024)?string("0.##")}
                    
                    
                        目录: 
                        ${props['user.dir']!},临时目录:${props['java.io.tmpdir']!}

Key	Description of Associated Value	中文描述
java.version	Java Runtime Environment version	Java 运行时环境版本
java.vendor	Java Runtime Environment vendor	Java 运行时环境供应商
java.vendor.url	Java vendor URL	Java 供应商的 URL
java.home	Java installation directory	Java 安装目录
java.vm.specification.version	Java Virtual Machine   specification version	Java 虚拟机规范版本
java.vm.specification.vendor	Java Virtual Machine   specification vendor	Java 虚拟机规范供应商
java.vm.specification.name	Java Virtual Machine   specification name	Java 虚拟机规范名称
java.vm.version	Java Virtual Machine implementation version	Java 虚拟机实现版本
java.vm.vendor	Java Virtual Machine   implementation vendor	Java 虚拟机实现供应商
java.vm.name	Java Virtual Machine   implementation name	Java 虚拟机实现名称
java.specification.version	Java Runtime Environment   specification version	Java 运行时环境规范版本
java.specification.vendor	Java Runtime Environment   specification vendor	Java 运行时环境规范供应商
java.specification.name	Java Runtime Environment   specification name	Java 运行时环境规范名称
java.class.version	Java class format version number	Java 类格式版本号
java.class.path	Java class path	Java 类路径
java.library.path	List of paths to search when   loading libraries	加载库时搜索的路径列表
java.io.tmpdir	Default temp file path	默认的临时文件路径
java.compiler	Name of JIT compiler to use	要使用的 JIT 编译器的名称
java.ext.dirs	Path of extension directory or   directories	一个或多个扩展目录的路径
os.name	Operating system name	操作系统的名称
os.arch	Operating system architecture	操作系统的架构
os.version	Operating system version	操作系统的版本
file.separator	File separator ("/" on   UNIX)	文件分隔符（在 UNIX 系统中是“/”）
path.separator	Path separator (":" on   UNIX)	路径分隔符（在 UNIX 系统中是“:”）
line.separator	Line separator ("\n"   on UNIX)	行分隔符（在 UNIX 系统中是“/n”）
user.name	User's account name	用户的账户名称
user.home	User's home directory	用户的主目录
user.dir	User's current working directory	用户的当前工作目录