下面顯示的是結(jié)果，我用的是idea,和老師講的一樣的代碼，但是輸出卻是重復的?why？
FirstFilter?Filter{
????destroy()?{
????????System..println();
????}
????doFilter(ServletRequest?servletRequest,?ServletResponse?servletResponse,?FilterChain?filterChain)?IOException,?ServletException
????{
????????System..println();
????????filterChain.doFilter(servletRequest,servletResponse);
????????System..println();
????}
????init(FilterConfig?filterConfig)?ServletException?{System..println();
????}
}這是FirstFilter
SecondFilter?Filter?{
????destroy()?{
????????System..println();
????}
????doFilter(ServletRequest?servletRequest,?ServletResponse?servletResponse,?FilterChain?filterChain)?IOException,?ServletException?{
????????System..println();
????????filterChain.doFilter(servletRequest,servletResponse);
????????System..println();
????}
????init(FilterConfig?filterConfig)?ServletException?{
????????System..println();
????}
}
2018-06-19
在設置tomcat 服務器的時候把
Server?
Open browser 的 After launch 勾掉，手動開啟瀏覽器網(wǎng)頁可以解決
2018-05-29
因為你SecondFilter類里面的doFilter方法有一句
所以處理了兩次
2018-03-27