留言板问题

Question

String guestbookpath=request.getRealPath("/");      java.io.FileWriter fw=new java.io.FileWriter(guestbookpath+"\\guestbook.txt",true);
      java.io.PrintWriter pw=new java.io.PrintWriter(fw);
      pw.println(guestbookpath);
      pw.println("留言时间 ： \t"+ new java.util.Date());
      pw.println("用户名字 ： \t"+request.getParameter("guest_name"));
      pw.println("用户 QQ ： \t"+request.getParameter("guest_qq"));
      pw.println("用户E_mail ： \t"+request.getParameter("guest_mail"));
      pw.println("用户主页 ： \t"+request.getParameter("guest_homepage"));
      pw.println("用户留言内容 ： \n"+request.getParameter("guest_message"));
      pw.print("\n");
      pw.close();
      fw.close();

Answer 1

那我怎么从这个guestbook.txt中取出数据呢

Answer 2

String content="";
String guestbookpath=request.getRealPath("/");
java.io.FileReader fr=new java.io.FileReader(guestbookpath+"\\guestbook.txt");
java.io.BufferedReader br = new java.io.BufferedReader(fr);
String inLine = br.readLine();
while (inLine != null) {
if (inLine == "\n"){
content += (inLine + "<br><br>");}
else
  {
content += (inLine + "<br>");
}inLine = br.readLine();
}
out.println(content);
br.close();
fr.close();