?? browseservlet.java
字號(hào):
package anni.gbook.ajax;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Logger;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import anni.gbook.BoardInfo;
import anni.gbook.FileDAO;
import anni.gbook.IBoardDAO;
/**
* 瀏覽所有留言.
* @author Lingo
* @version 1.0
* @since 2006-01-19
*/
public class BrowseServlet extends HttpServlet {
/**
* 日志.
*/
private Logger log = Logger.getLogger(BrowseServlet.class.getName());
/**
* dao接口.
*/
private IBoardDAO dao;
/**
* 初始化dao.
* @param config 配置
* @throws ServletException servlet異常
*/
public final void init(final ServletConfig config)
throws ServletException {
super.init(config);
dao = FileDAO.getInstance();
}
/**
* 銷毀servlet.
*/
public final void destroy() {
super.destroy();
dao = null;
}
/**
* 處理get請(qǐng)求.
* @param request 請(qǐng)求
* @param response 響應(yīng)
* @throws ServletException servlet異常
* @throws IOException io異常
*/
protected final void doGet(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException {
log.info("start");
//
StringBuffer buff = new StringBuffer();
response.setContentType("text/xml");
response.setCharacterEncoding("GBK");
PrintWriter out = response.getWriter();
buff.append("<?xml version=\"1.0\" encoding=\"GBK\"?>")
.append("<constants>");
String id0 = request.getParameter("id");
int id = 0;
try {
id = Integer.parseInt(id0);
} catch (NumberFormatException ex) {
System.out.println("輸入的id不是一個(gè)數(shù)字：" + ex.getMessage());
buff.append("<err>").append("ID錯(cuò)誤").append("</err>")
.append("</constants>");
out.print(buff.toString());
return;
}
//
BoardInfo info = dao.findById(id);
if (info == null) {
System.out.println("找不到指定id的留言：" + id);
buff.append("<err>").append("找不到指定id的留言").append("</err>")
.append("</constants>");
out.print(buff.toString());
return;
}
String reply = info.getReply();
int html = 0;
if (reply.indexOf("<") != -1) {
html = 1;
}
reply = reply.replaceAll("<", "<");
reply = reply.replaceAll(">", ">");
buff.append("<title>").append(Constants.TITLE).append("</title>")
.append("<copyright>").append(Constants.COPYRIGHT)
.append("</copyright>").append("<id>").append(id)
.append("</id>").append("<reply>").append(reply)
.append("</reply>").append("<html>").append(html)
.append("</html>").append("</constants>");
out.print(buff.toString());
log.info("end");
}
}
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