JSP用bean获取各种参数

1.包：

package beanpackage;

/**
 *
 * @author lucifer
 */
public class SystemProperties {
     public String getRuntimeEnvironmentVersion(){
          return System.getProperty("java.version");
     }
     public String getRuntimeEnvironmentVendor(){
          return System.getProperty("java.vendor");
     }

     public String getVmVersion(){
          return System.getProperty("java.vm.version");
     }
     public String getVmVendor(){
          return System.getProperty("java.vm.vendor");
     }
     public String getVmName(){
          return System.getProperty("java.vm.name");
     }

     public String getVmSpecVersion(){
          return System.getProperty("java.vm.specification.version");
     }
     public String getVmSpecVendor(){
          return System.getProperty("java.vm.specification.vendor");
     }
     public String getVmSpecName(){
          return System.getProperty("java.vm.specification.name");
     }

     public String getRteSpecName(){
          return System.getProperty("java.specification.name");
     }
     public String getRteSpecVersion(){
          return System.getProperty("java.specification.version");
     }
     public String getRteSpecVendor(){
          return System.getProperty("java.specification.vendor");
     }

     public String getOperatingSystemName(){
          return System.getProperty("os.name");
     }
     public String getOperatingSystemVersion(){
          return System.getProperty("os.version");
     }
     public String getOperatingSystemArchitecture(){
          return System.getProperty("os.arch");
     }
}

2.JSP代码：

%--
    Document   : usebean
    Created on : 2009-10-3, 13:06:24
    Author     : lucifer
--%

%@page contentType="text/html" pageEncoding="UTF-8"%
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd"
jsp:useBean id="properties" class="beanpackage.SystemProperties"/
html
    head
        meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
        titleJSP Page/title
    /head
    body
         Operating System Name:
         jsp:getProperty name="properties" property="operatingSystemName"/
         br
         Operating System Version:
         jsp:getProperty name="properties" property="operatingSystemVersion"/
         br
         Operating System Architecture:
         jsp:getProperty name="properties" property="operatingSystemArchitecture"/
         br
         br
         Runtime Environment Version(JDK version):
         jsp:getProperty name="properties" property="runtimeEnvironmentVersion"/
         br
         Runtime Environment Vendor(JDK vendor):
         jsp:getProperty name="properties" property="runtimeEnvironmentVendor"/
         br
         br
         VM Version:
         jsp:getProperty name="properties" property="vmVersion"/
         br
         VM Vendor:
         jsp:getProperty name="properties" property="vmVendor"/
         br
         VM Name:
         jsp:getProperty name="properties" property="vmName"/
         br
         br
         RTE Specification Version:
         jsp:getProperty name="properties" property="rteSpecVersion"/
         br
         RTE Specification Vendor:
         jsp:getProperty name="properties" property="rteSpecVendor"/
         br
         RTE Specification Name:
         jsp:getProperty name="properties" property="rteSpecName"/
         br
         br
         VM Specification Name:
         jsp:getProperty name="properties" property="vmSpecName"/
         br
         VM Specification Version:
         jsp:getProperty name="properties" property="vmSpecVersion"/
         br
         VM Specification Vendor:
         jsp:getProperty name="properties" property="vmSpecVendor"/
    /body
/html

3.输出：

Operating System Name: Windows Vista
Operating System Version: 6.0
Operating System Architecture: x86

Runtime Environment Version(JDK version): 1.6.0_16
Runtime Environment Vendor(JDK vendor): Sun Microsystems Inc.

VM Version: 14.2-b01
VM Vendor: Sun Microsystems Inc.
VM Name: Java HotSpot(TM) Client VM

RTE Specification Version: 1.6
RTE Specification Vendor: Sun Microsystems Inc.
RTE Specification Name: Java Platform API Specification

VM Specification Name: Java Virtual Machine Specification
VM Specification Version: 1.0
VM Specification Vendor: Sun Microsystems Inc.