package com.mozilla.bespin;import java.io.IOException;import java.io.Reader;public class Controller {    private RequestContext ctx;    public RequestContext getCtx() {        return ctx;    }    public void setCtx(RequestContext ctx) {        this.ctx = ctx;    }    /**     * Convenience method that catches the exception and prints it out     *     * @param message     */    protected void print(String message) {        try {            getCtx().getResp().setHeader("Content-Type", "text/plain");            getCtx().getResp().getWriter().print(message);        } catch (IOException e) {            e.printStackTrace();        }    }    /**     * Convenience method for returning the body stream as a single string.     *     * @return     * @throws IOException     */    protected String getBody() throws IOException {        Reader reader = getCtx().getReq().getReader();        StringBuffer sb = new StringBuffer();        int i = 0;        while ((i = reader.read()) != -1) sb.append((char) i);        return sb.toString();    }    protected boolean isAuthenticated() {        throw new UnsupportedOperationException("You must implement the isAuthenticated() method in your Controller subclass");    }}