?? articlefilter.java
字號(hào):
package edu.liusong.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import edu.liusong.dao.ArticleDAO;
import edu.liusong.dao.BoardDAO;
import edu.liusong.dao.NewsDAO;
import edu.liusong.mo.Article;
public class ArticleFilter implements Filter {
protected FilterConfig config = null;
public void destroy() {
config = null;
}
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException,
ServletException {
HttpServletRequest request = (HttpServletRequest) arg0;
if (request.getAttribute("boardList") == null) {
// 左邊導(dǎo)航欄的信息未初始化
request.setAttribute("boardList", new BoardDAO().getBoards());
}
if (request.getAttribute("newsList") == null) {
// 右側(cè)通知初始化
request.setAttribute("newsList", new NewsDAO().getTopNews());
}
Article article = (Article) request.getAttribute("article");
long aid = 0;
if (article == null) {
if (request.getParameter("aid") != null) {
aid = Long.parseLong(request.getParameter("aid"));
}
request.setAttribute("article", new ArticleDAO().getById(aid));
}
arg2.doFilter(arg0, arg1);
}
public void init(FilterConfig arg0) throws ServletException {
config = arg0;
}
}
?? 快捷鍵說明
復(fù)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(hào)
Ctrl + =
減小字號(hào)
Ctrl + -