constantsservlet.java

java结合ajax编写的简易留言本

package anni.gbook.ajax;

import java.io.IOException;
import java.io.PrintWriter;

import java.util.logging.Logger;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 * 获得实例常量.
 * @author Lingo
 * @version 1.0
 * @since 2006-01-16
 */
public class ConstantsServlet extends HttpServlet {
    /**
     * 日志.
     */
    private Logger log = Logger.getLogger(BoardServlet.class.getName());

    /**
     * 标题.
     */
    private String title = Constants.TITLE;

    /**
     * 版权.
     */
    private String copyright = Constants.COPYRIGHT;

    /**
     * 密码.
     */
    private String password = Constants.PASSWORD;

    /**
     * 处理请求.
    * @param request 请求
    * @param response 响应
    * @throws ServletException servlet异常
    * @throws IOException io异常
     */
    protected final void service(final HttpServletRequest request,
        final HttpServletResponse response)
        throws ServletException, IOException {
        log.info("start");

        response.setContentType("text/xml");

        //response.setCharacterEncoding("GBK");
        PrintWriter out = response.getWriter();
        out.print("<?xml version=\"1.0\" encoding=\"GBK\"?>");
        out.print("<constants>");
        out.print("<title>" + title + "</title>");
        out.print("<copyright>" + copyright + "</copyright>");
        out.print("<password>" + password + "</password>");
        out.print("</constants>");

        log.info("end");
    }
}