诡异的错误!!
asaco 2007-09-06 03:40:09 我用jb2006编译的下面程序
报出错误:
"ShoppingCart.java": package javax.servlet.http does not exist at line 3, column 1
可是在别人的机器上都没有这个错,请问这是为什么?应该如何解决呢?
package com.wrox.sessions;
import java.util.Vector;
import javax.servlet.http.*;
public class ShoppingCart extends Object{
private Vector cart=null;
String product=null;
String submit=null;
public ShoppingCart() {
cart=new Vector();
}
public void setProduct(String product) {
this.product=product;
}
public void setSubmit(String submit) {
this.submit=submit;
}
public Vector getProducts(){
return cart;
}
public void addProduct(String product){
cart.add(product);
}
public void removeProduct(String product){
cart.remove(product);
}
public void processRequest(HttpServletRequest req){
if (submit!=null){
if (submit.equals("add")){
addProduct(product);
}else{
removeProduct(product);
}
reset();
}
}
public void reset(){
submit=null;
product=null;
}
}