?? checklogin.java
字號:
//checkLogin.java
//import required classes
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
//class checkLogin
public class checkLogin
{
public String username = "";
public boolean check(HttpServletRequest req,HttpServletResponse res)
throws IOException,ServletException
{
String cookieName = "username";
Cookie[] myCookies = req.getCookies();
this.username = this.getCookieValue(myCookies,cookieName,"not found");
PrintWriter out = res.getWriter();
if(this.username != null)
{
//out.println("早上好," + this.username + "!");
return true;
}else{
out.println("登陸失敗!");
return false;
}
}
public String getUserName()
{
return this.username;
}
public static String getCookieValue(Cookie[] cookies,String cookieName,String defaultValue)
{
for(int i=0;i<cookies.length;i++) {
Cookie cookie = cookies[i];
if (cookieName.equals(cookie.getName()))
return(cookie.getValue());
}
return(defaultValue);
}
}
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