servlet?
日期：2014-05-18 浏览次数：20579 次
servlet??
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class ShowCart extends HttpServelt
{
public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException
{
String[] items={ "电视机 ", "电冰箱 ", "电脑 "};
HttpSession session=req.getSession(true);
Integer itemCount=(Integer)session.getValue( "itemCount ");
if(itemCount==null)
{
itemCount=new Integer(0);
}
re.setContentType( "text/html;charset=gb2312 ");
PrintWriter out=res.getWriter();
String[] itemsSelected;
String itemName;
itemsSelected=re.getParameterValues( "item ");
if(itemsSelected!=null)
{
for(int i=0;i <itemsSelected.length;i++)
{
itemName=itemsSelected[i];
itemCount=new Integer(itemCount.intValue()+1);
session.putValue( "Item "+itemCount,itemName);
session.putValue( "itemCount ",itemCount);
}
}
out.println( " <html> ");
out.println( " <head> ");
out.println( " <title> JSP </title> ");
out.println( " </head> ");
out.println( " <body> ");
out.println( " <center> <h1> 您放在购物篮中的商品是： <h1> </center> ");
for(int i=1;i <=itemCount.intValue();i++)
{
String item=(String)session.getValue( "Item "+i);
out.println(items[Integer.parseInt(item)]);
out.println( " <br> ");
}
out.println( " <hr> <p> </p> <a href= "\jsp\a.html "> 继续选购 </a> ");
out.println( " </body> ");
out.println( " </html> ");
out.close();
}
}这个文件在我的D:\jsp\WEB-INF\classes里. <html>
<head>
<title> JSP </title>
</head>
<body>
<center> <h1> 电器商场 </h1> </center>
<hr>
<form action= "/jsp/ShowCart " method= "post ">
选购商品: <p>
<input type= "Checkbox " name= "item " value= "0 ">
第一种:电视机 </p>
<p> <input type= "Checkbox " name= "item " vlaue= "1 ">
第二种:电冰箱 </p>
<p> <input type= "Checkbox " name= "item " value= "2 ">
第三种:电脑 </p>
<hr>
<input type= "Submit " name= &qu
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class ShowCart extends HttpServelt
{
public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException
{
String[] items={ "电视机 ", "电冰箱 ", "电脑 "};
HttpSession session=req.getSession(true);
Integer itemCount=(Integer)session.getValue( "itemCount ");
if(itemCount==null)
{
itemCount=new Integer(0);
}
re.setContentType( "text/html;charset=gb2312 ");
PrintWriter out=res.getWriter();
String[] itemsSelected;
String itemName;
itemsSelected=re.getParameterValues( "item ");
if(itemsSelected!=null)
{
for(int i=0;i <itemsSelected.length;i++)
{
itemName=itemsSelected[i];
itemCount=new Integer(itemCount.intValue()+1);
session.putValue( "Item "+itemCount,itemName);
session.putValue( "itemCount ",itemCount);
}
}
out.println( " <html> ");
out.println( " <head> ");
out.println( " <title> JSP </title> ");
out.println( " </head> ");
out.println( " <body> ");
out.println( " <center> <h1> 您放在购物篮中的商品是： <h1> </center> ");
for(int i=1;i <=itemCount.intValue();i++)
{
String item=(String)session.getValue( "Item "+i);
out.println(items[Integer.parseInt(item)]);
out.println( " <br> ");
}
out.println( " <hr> <p> </p> <a href= "\jsp\a.html "> 继续选购 </a> ");
out.println( " </body> ");
out.println( " </html> ");
out.close();
}
}这个文件在我的D:\jsp\WEB-INF\classes里. <html>
<head>
<title> JSP </title>
</head>
<body>
<center> <h1> 电器商场 </h1> </center>
<hr>
<form action= "/jsp/ShowCart " method= "post ">
选购商品: <p>
<input type= "Checkbox " name= "item " value= "0 ">
第一种:电视机 </p>
<p> <input type= "Checkbox " name= "item " vlaue= "1 ">
第二种:电冰箱 </p>
<p> <input type= "Checkbox " name= "item " value= "2 ">
第三种:电脑 </p>
<hr>
<input type= "Submit " name= &qu
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