ServletRequest和ServletResponse

public class TranServlet implements Servlet {

    /**
     * Constructor of the object.
     */
    public TranServlet() {
        super();
    }
    public ServletConfig getServletConfig() {
        // TODO Auto-generated method stub
        return null;
    }

    public String getServletInfo() {
        // TODO Auto-generated method stub
        return null;
    }

    public void init(ServletConfig config) throws ServletException {
        System.out.println("init");
        
    }

    public void service(ServletRequest req, ServletResponse res)
            throws ServletException, IOException {
        System.out.println("service");
        String account = req.getParameter("account");
        String password = req.getParameter("password");
        System.out.println(account+" "+password);
        
        String[] hobbies = req.getParameterValues("hobby");
        for(String h:hobbies){
            System.out.println(h);
        }
        Enumeration<String> en = req.getParameterNames();
        while(en.hasMoreElements()){
            String name = en.nextElement();
            String value = req.getParameter(name);
            System.out.println(name+"+++"+value);
        }
        Map<String,String[]> map = req.getParameterMap();
        for(Map.Entry<String, String[]> entry: map.entrySet()){
            String key = entry.getKey();
            List<String> values = Arrays.asList(entry.getValue());
            System.out.println(key+"***"+values);
        }
        HttpServletRequest hsr = (HttpServletRequest)req;
        String uri = hsr.getRequestURI();
        String method = hsr.getMethod();
        String querystring = hsr.getQueryString();
        System.out.println(uri);
        System.out.println(method);
        System.out.println(querystring);
    }
    public void destroy() {
        
    }

}