《Web程序测试实训教程（Java版）》-徐民鹰-源代码

				package com.jspsmart.upload;
				
				import java.util.Enumeration;
				import java.util.Hashtable;
				
				public class Request
				{
				
				    Request()
				    {
				        m_parameters = new Hashtable();
				        m_counter = 0;
				    }
				
				    protected void putParameter(String name, String value)
				    {
				        if(name == null)
				            throw new IllegalArgumentException("The name of an element cannot be null.");
				        if(m_parameters.containsKey(name))
				        {
				            Hashtable values = (Hashtable)m_parameters.get(name);
				            values.put(new Integer(values.size()), value);
				        } else
				        {
				            Hashtable values = new Hashtable();
				            values.put(new Integer(0), value);
				            m_parameters.put(name, values);
				            m_counter++;
				        }
				    }
				
				    public String getParameter(String name)
				    {
				        if(name == null)
				            throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");
				        Hashtable values = (Hashtable)m_parameters.get(name);
				        if(values == null)
				            return null;
				        else
				            return (String)values.get(new Integer(0));
				    }
				
				    public Enumeration getParameterNames()
				    {
				        return m_parameters.keys();
				    }
				
				    public String[] getParameterValues(String name)
				    {
				        if(name == null)
				            throw new IllegalArgumentException("Form's name is invalid or does not exist (1305).");
				        Hashtable values = (Hashtable)m_parameters.get(name);
				        if(values == null)
				            return null;
				        String strValues[] = new String[values.size()];
				        for(int i = 0; i < values.size(); i++)
				            strValues[i] = (String)values.get(new Integer(i));
				
				        return strValues;
				    }
				
				    private Hashtable m_parameters;
				    private int m_counter;
				}