关于JSP写文件的补充 |
JAVA对写文件推荐用流的方式,下面是我写的一个简单计数器,当然在执行此程序前需要先建立count.txt文件,你可以仅执行此程序的后半部分,先创建文件: $#@60;%@ page language = "java" %$#@62; $#@60;%@ page contentType = "text/html; charSet=gb2312" %$#@62; $#@60;%@ page import ="java.util.*" %$#@62; $#@60;%@ page import ="java.lang.*" %$#@62; $#@60;%@ page import ="javax.servlet.*" %$#@62; $#@60;%@ page import ="javax.servlet.jsp.*" %$#@62; $#@60;%@ page import ="javax.servlet.http.*" %$#@62; $#@60;%@ page import="java.io.*" %$#@62; $#@60;% int count=0; FileInputStream fi =new FileInputStream ("count.txt"); ObjectInputStream si= new ObjectInputStream (fi); count =si.readInt(); count++; out.print(count); si.close(); FileOutputStream fo =new FileOutputStream ("count.txt"); ObjectOutputStream so= new ObjectOutputStream (fo); so.writeInt(count); so.close(); %$#@62; 你可以发现count.txt在winnt/system32目录下(WinNt4)这个计数器使用Int型变量,简单好用.希望大家对JAVA多多讨论。 |