package ServletDemo;
/**
* 控制用户访问时间
*/
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
public class TimeControl extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("text/html;charset=UTF-8"); //设置响应的 MIME类型。
//获得一个向客户发送数据的输出流：
PrintWriter out=resp.getWriter();
out.println("<HTML>");
out.println("<BODY>");
out.println("Now Time:");
Date date = new Date();
out.println("<BR>"+ date);
// System.out.println("时间是-->"+date);
//Sun Oct 13 20:32:19 CST 2019
SimpleDateFormat dateFormat = new SimpleDateFormat("HH");
// System.out.println("dateFormat.format(date)->"+dateFormat.format(date));
// f.format()将日期格式化后是String类型，
// f.format(new Date())
// a.before(b) //表示a小于b
// 2、用parse方法解析字符串，
// f.parse(f.format(new Date()))
// 3、然后利用before进行比较。
String s = dateFormat.format(date);
int a = Integer.parseInt(s);
System.out.println(a);
if(a<22||a>6){
}else{
resp.setHeader("refresh","0.1;http://localhost:8080/javaWeb_war_exploded/ServletDemo/StopVisit");//设置 Refresh 的值。0.1秒刷新页面一次,
}
out.println("</BODY>");
out.println("</HTML>");
}
}