Ask for JSP problem, can run on a computer, can't run on another platform?

Package Com.mvc;import Java.io.ioexception;import javax.servlet.requestdispatcher;import Javax.servlet.servletexception;import Javax.servlet.http.httpservlet;import Javax.servlet.http.httpservletrequest;import Javax.servlet.http.HttpServletResponse; Public classExample6_1 extends HttpServlet {/**     *      */    Private StaticFinalLongSerialversionuid =1L; @Override Public voiddoget (httpservletrequest request, httpservletresponse response) throws Servletexception, IOException { //TODO auto-generated Method StubModel data =NewModel ();//Create a JavaBean objectRequest.setattribute ("Data", data); String Shouxiang= Request.getparameter ("a"); intA =Integer.parseint (Shouxiang);        Data.seta (a); String Xiangshu= Request.getparameter ("N"); intn =Integer.parseint (Xiangshu);        DATA.SETN (n); String Gong= Request.getparameter ("Q"); intQ =integer.parseint (gong);        DATA.SETQ (q); Data.setname ("tolerance of arithmetic progression"); intsum =0;  for(inti =0; I < n; i++) {sum+=A; A+=Q;        } data.setsum (sum); RequestDispatcher Dispatcher= Request.getrequestdispatcher ("show.jsp");    Dispatcher.forward (request, response); } @Override Public voidDoPost (httpservletrequest request, httpservletresponse response) throws Servletexception, IOException { //TODO auto-generated Method StubModel data =NewModel ();//Create a JavaBean objectRequest.setcharacterencoding ("iso-8859-1"); Request.setattribute ("Data", data); String Shouxiang= Request.getparameter ("a"); intA =Integer.parseint (Shouxiang);        Data.seta (a); String Xiangshu= Request.getparameter ("N"); intn =Integer.parseint (Xiangshu);        DATA.SETN (n); String Gong= Request.getparameter ("Q"); intQ =integer.parseint (gong);        DATA.SETQ (q); Data.setname ("tolerance of geometric series"); intsum =1;  for(inti =0; I < n; i++) {sum+=A; A*=Q;        } data.setsum (sum); RequestDispatcher Dispatcher= Request.getrequestdispatcher ("show.jsp");    Dispatcher.forward (request, response); }}package Com.mvc; Public classModel {intA; intN; intQ; intsum; String name="";  PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     Public intgetsum () {returnsum; }     Public voidSetsum (intsum) {         This. sum =sum; }     Public intGeta () {returnA; }     Public voidSetA (inta) { This. A =A; }     Public intGetn () {returnN; }     Public voidSETN (intN) { This. N =N; }     Public intGetQ () {returnQ; }     Public voidSETQ (intq) { This. Q =Q; }}<?xml version="1.0"encoding="UTF-8"? ><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="Http://java.sun.com/xml/ns/javaee"xsi:schemalocation="Http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"Id="webapp_id"version="3.0"><servlet><servlet-name>hhh</servlet-name><servlet-class>com.mvc.example6_1</servlet-class></servlet><servlet-mapping> <servlet-name>hhh</servlet-name> <url-pattern>/heh </url-pattern></servlet-mapping></web-app> <%@ Page contenttype="text/html; charset=gb2312"%>"show.jsp"Method="Get">arithmetic progression summation:<br> Enter the first <input type="text"Name="a">Input Tolerances:<input type="text"Name="Q">Sum of items:<input type="text"Name="N"> <input type="Submit"Value="Submit"> </form> <form action="heh"Method="Post">Geometric series summation:<br> Enter the first <input type="text"Name="a">input male ratio:<input type="text"Name="Q">Sum of items:<input type="text"Name="N"> <input type="Submit"Value="Submit"> </form></body>"text/html; charset=gb2312"%><jsp:usebean id="Data" class="Com.mvc.model"Scope="Request"></jsp:usebean><table border="1"> <tr> <th> First item of the series </th> <th><jsp:getproperty property="name"Name="Data"/></th> <th> number of items </th> <th> summation results </th> </tr> <tr> &lt ; Td><jsp:getproperty property="a"Name="Data"/></td> <td><jsp:getproperty property="name"Name="Data"/></td> <td><jsp:getproperty property="N"Name="Data"/></td> <td><jsp:getproperty property="sum"Name="Data"/></td> </tr></table>

Ask for JSP problem, can run on a computer, can't run on another platform?