?? loginfilter.java
字號:
package com.test;
import javax.servlet.FilterChain;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import javax.servlet.FilterConfig;
public class LoginFilter implements Filter
{
String LOGIN_PAGE = "init.jsp";
protected FilterConfig filterConfig;
public void init(FilterConfig config)
{
this.filterConfig = config;
}
public void doFilter(ServletRequest req,ServletResponse res,FilterChain chain) throws IOException,ServletException
{
HttpServletRequest hreq = (HttpServletRequest)req;
HttpServletResponse hres = (HttpServletResponse)res;
String isLog = (String)hreq.getSession().getAttribute("isLog");
if((isLog!=null)&&((isLog.equals("true"))||(isLog=="true")))//檢查是否登陸
{
chain.doFilter(req,res);
return;
}
else
{
hres.sendRedirect(LOGIN_PAGE);//如果沒有登陸,把視圖派發到登陸頁面
}
}
public void destroy()
{
this.filterConfig = null;
}
public void setFilterConfig(final FilterConfig filterConfig)
{
this.filterConfig = filterConfig;
}
};
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -