session数组的问题请教?

Question

在jsp中我想用session数组,这样可以不:
  int i=counter.getCount();
  String name[]=new String[counter.getSave()]
  String name[i]=request.getParameter("name");
  session.setAttribute("name",name);下一页使用session数组时用:
String []name=(String[])session.getAttribute("name");可以这样不?

Answer 1

错误提示:Syntax error on token "String", ; expected
可是我这样应该可以的啊

Answer 2

String name[]=new String[counter.getSave()]这句少分号

Answer 3

分号加了,错误依然
我这样定义可以不:int i=counter.getCount();
总是提示我i非法

Answer 4

String name[] ,String name[i] 重复定义了。 
String name[i]=request.getParameter("name");改为:
name[i]=request.getParameter("name");

Answer 5

一共五个文件,用计数器显示输入成员数,id为第一页输入的成员总人数
Counter.java是个计数器类，我在第一个页面输入id，到第二个页面显示是第一个成员，在再第二个页面输入姓名，跳转到第三个页面，计数器加一，当成员数不大于id时循环继续输入，若大于id则清零，提示输入足够人数
example4e.jsp同时还要循环接收前面输入的成员姓名
帮忙看看了
------------------------------------------------
example1e.jsp:
------------------------------------------------------
<%@ page contentType="text/html; charset=gb2312" language="java"import="java.sql.*,java.io.*"%> 
<%@ page import="DBcon.dbconn"session="true"%>
<jsp:useBean id="DBcon"scope="page"class="DBcon.dbconn"/>
<p>请输入插入Ms SQL Server2000数据库的数据：</p>
<form name="form2" method="post" action="example2e.jsp">
<p>ID:
    <input type="text" name="id">
</p>
<p>
  <input type="submit" name="Submit" value="下一步">
</p>
</form>
--------------------------------------------------------
example2e.jsp:
------------------------------------------------------
<%@ page contentType="text/html; charset=gb2312" language="java"import="java.sql.*,java.io.*"%> 
<%@ page import="sys.Counter"session="true"%>
<jsp:useBean id="counter"scope="page"class="sys.Counter" />
<p>请输入插入Ms SQL Server2000数据库的数据：</p>
<form name="form2" method="post" action="example3e.jsp"><%  
  String id=request.getParameter("id");
  session.setAttribute("id",id);
  waring.jingao(id);
  //if(id=="")
  //{
  //    out.println("请输入正确值!");
  //}
%>
<br>
共
<%  if(id=="")
  {%>
<script language="javascript">      alert("请输入id的正确值!");
</script>
<%  }%>
<%
    int intValue = 0;
    try
  {
     intValue = Integer.parseInt(id);
}
catch(Exception e)
{
     System.out.println("This string doesn't include a integer.");
    // do something...
}
counter.Save(intValue);
out.println(counter.getSave());
%>人
<p>
  <input type="submit" name="Submit" value="下一步">
</p>
</form>
------------------------------------------------
example3e.jsp:
------------------------------------------------------
<%@ page contentType="text/html; charset=gb2312" language="java"import="java.sql.*,java.io.*"%> 
<%@ page import="sys.Counter"session="true" %>
<jsp:useBean id="counter"scope="page"class="sys.Counter" />
<p>请输入插入Ms SQL Server2000数据库的数据：</p>
<form name="form1" method="post" action="example4e.jsp">
<p>name:
    <input type="text" name="name">
</p>
这是第
<%  
String id=(String)session.getAttribute("id");
    out.println(counter.getCount());%>位成员
<%
out.println(counter.getSave());%>
<p>
  <input type="submit" name="Submit" value="继续输入姓名">
</p></form>
---------------------------------------------------------
example4e.jsp:
------------------------------------------------------
<%@ page contentType="text/html; charset=gb2312" language="java"import="java.sql.*,java.io.*"%> 
<%@ page import="sys.Counter"session="true" %>
<jsp:useBean id="counter"scope="page"class="sys.Counter" />
<p>请输入插入Ms SQL Server2000数据库的数据：</p>
<form name="form1" method="post" action="example3e.jsp"><% 
  int i=counter.getCount();
  int j=counter.getSave();
  String name[]=new String[j];
  if(i<=j)
          String name[i]=request.getParameter("name");
  session.setAttribute("name",name);  out.println(counter.getCount());
out.println(counter.getSave());
    counter.zeroCount(counter.getSave());
    out.println(counter.getCount());
counter.setCount();
out.println(counter.getCount());
if(counter.getCount()==0)
{
    out.println("你已经输入了全部成员!");
}
else
{
    out.println("请继续输入下一位成员!");
}
%>
<p>
  <input type="submit" name="Submit" value="继续输入姓名">
</p></form>
------------------------------------------------
Counter.java:
--------------------------
package sys;
public class Counter
{
  static int Count=1;
  static int save;  public void Counter()
  {
  }  public static void Save(int i)
  {
     save=i;
  } public void addCount()
 {
   Count++;
  }
 public void setCount()
 {
    if(Count==0)
        Count++;
 }
 public void zeroCount(int j)
 { 
   if(Count>=j)
   {
      Count=0;
   }
   else
   {
      Count++;
   }
  }
  public int getCount()
  {
    return Count;
  }
  public int getSave()
  {
    return save;
  }
}
------------------------------------------

Answer 6

这样String []name=(String[])session.getAttribute("name");接收session中值可以不?

Answer 7

就按 zling1981(struts+spring_hibernate！！) 说的没错
这样String []name=(String[])session.getAttribute("name");接收session中值可以不?
--------
可以的

Answer 8

我把String name[i]=request.getParameter("name");改为name[i]=request.getParameter("name");以后第一次运行成功可是以后再运行就提示显示一段程序:org.apache.jasper.JasperException: Exception in JSP: /Example/example4e.jsp:129:   int j=counter.getSave();
10:   String name[]=new String[j];
11:   if(i<=j)
12:      name[i]=request.getParameter("name");
13:   session.setAttribute("name",name); 
14: 
15:  out.println(counter.getCount());
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.ArrayIndexOutOfBoundsException: 3
org.apache.jsp.Example.example4e_jsp._jspService(example4e_jsp.java:64)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

Answer 9

错误提示
description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: 3
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.ArrayIndexOutOfBoundsException: 3
org.apache.jsp.Example.example4e_jsp._jspService(example4e_jsp.java:64)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.16 logs.