我有以下问题:
我有一个index.html
页面,其中包含登录表单:
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="css/css.css" type="text/css" rel="stylesheet"/>
</head>
<body>
<nav>
<form action="">
<label for="username">User: </label><input name ="username" type="text">
<label for="password">Password: </label><input name ="password" type="password">
<input type="submit" value="Vai">
</form>
</nav>
<section id ="page">
</section>
</body>
</html>
我创建了一个名为f2
的过滤器,该过滤器应检查用户名是否为“admin”,如果是,则将用户重定向到页面payroll/private/stipendi.html
或如果不重定向到页面payroll/public/dipendenti.html
。
这是我的项目的层次结构(使用netbeans 8.02制作):
这是我的web.xml
文件:
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<filter>
<filter-name>f2</filter-name>
<filter-class>f2</filter-class>
</filter>
<filter-mapping>
<filter-name>f2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
</web-app>
这是f2
过滤器:
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
if (debug) {
log("f2:doFilter()");
}
doBeforeProcessing(request, response);
HttpServletRequest req = (HttpServletRequest) request;
if(req.getSession().getAttribute("username") == null)
System.out.println("Attributo username = NULL");
if(!req.getParameter("username").equals("admin")){
System.out.println("Username is not ADMIN");
req.getRequestDispatcher("/payroll/public/dipendenti.html").forward(request, response);
}
else{
System.out.println("Username is ADMIN");
req.getRequestDispatcher("/payroll/private/stipendi.html").forward(request, response);
}
Throwable problem = null;
try {
chain.doFilter(request, response); return;
} catch (Throwable t) {
// If an exception is thrown somewhere down the filter chain,
// we still want to execute our after processing, and then
// rethrow the problem after that.
problem = t;
t.printStackTrace();
}
doAfterProcessing(request, response);
// If there was a problem, we want to rethrow it if it is
// a known type, otherwise log it.
if (problem != null) {
if (problem instanceof ServletException) {
throw (ServletException) problem;
}
if (problem instanceof IOException) {
throw (IOException) problem;
}
sendProcessingError(problem, response);
}
}
我重温了一些事情:
我有一个无限循环,因为我的过滤器f2
有url-pattern = /*
所以它捕获每个请求,详细说明,发送它并重新捕获刚刚发送的相同请求。一遍又一遍地。
这个男士我必须把我的url-pattern
换成其他东西。但是什么?如果我在不创建任何servlet的情况下创建一个名为...的servlet,让我们说myRedirectServlet.java
:index.html
或action = "myRedirectServlet"
,那该怎么办?
我道歉但我很困惑。
请帮帮我
答案 0 :(得分:0)
您所做的不是为了安全。你应该使用principals的概念 - 但是让我们将其保存一天。