全部代码全部在JDK中调试成功
源代码在线查看: dummycart.java
- import javax.servlet.http.*;
- import javax.servlet.*;
- import java.util.*;
- public class DummyCart
- {
- Vector v = new Vector();
- String submit = null;
- String item = null;
- private void addItem(String name)
- {
- v.addElement(name);
- }
- private void removeItem(String name)
- {
- v.removeElement(name);
- }
- public void setItem(String name)
- {
- item = name;
- }
- public void setSubmit(String s)
- {
- submit = s;
- }
- public String[] getItems()
- {
- String[] s = new String[v.size()];
- v.copyInto(s);
- return s;
- }
-
- public void processRequest(HttpServletRequest request)
- {
-
- submit = (String)request.getParameter("submit");
-
- item = (String)request.getParameter("item");
- if(submit.equals("null"))
- addItem(item);
- if(submit.equals("add"))
- addItem(item);
- else if(submit.equals("remove"))
- removeItem(item);
-
- reset();
- }
-
- private void reset()
- {
- submit = null;
- item = null;
- }
- }
import javax.servlet.http.*;
import javax.servlet.*;
import java.util.*;
public class DummyCart
{
Vector v = new Vector();
String submit = null;
String item = null;
private void addItem(String name)
{
v.addElement(name);
}
private void removeItem(String name)
{
v.removeElement(name);
}
public void setItem(String name)
{
item = name;
}
public void setSubmit(String s)
{
submit = s;
}
public String[] getItems()
{
String[] s = new String[v.size()];
v.copyInto(s);
return s;
}
public void processRequest(HttpServletRequest request)
{
//判断submit的值
submit = (String)request.getParameter("submit");
// System.out.println(submit);
item = (String)request.getParameter("item");
if(submit.equals("null"))
addItem(item);
if(submit.equals("add"))
addItem(item);
else if(submit.equals("remove"))
removeItem(item);
// 重置submit的值
reset();
}
private void reset()
{
submit = null;
item = null;
}
}