问题描述
我是spring framework的新手。在我的代码中,我使用拦截器检查会话是否存在。如果会话存在,我允许调用控制器,否则我重定向登录页面。
下面是我的代码。
@Override
public boolean preHandle(HttpServletRequest request,HttpServletResponse response,
用户user =(用户)session.getAttribute(user);
if(user == null)
{
System.err.println(Request Path:);
response.sendRedirect(index);
return false;
}
else
{
返回true;
}
}
但此代码未成功重定向。我收到以下错误,
在Mozilla中我得到以下错误
页面没有正确重定向
在chorme我得到以下错误?
这个网页有重定向循环
如何修复这个问题?任何帮助将不胜感激!!!
只是一个疯狂的猜测,因为你忘了说你的拦截器已配置。我认为这可能是由拦截器应用于登录页面索引
。
如果这是真的任何页面将要求浏览器重定向到 index
页面,但 index
页面本身将向浏览器发送重定向请求。 / p>
正确的方法是配置拦截器以忽略登录页面
@Override
public boolean preHandle(HttpServletRequest request,HttpServletResponse response,
// ignore login page
if(request.getServletPath()==/ index){/ / BEWARE:适应您的实际登录页面
返回true;
}
用户user =(用户)session.getAttribute(user);
if(user == null)
{
System.err.println(Request Path:);
response.sendRedirect(index);
return false;
}
其他
{
返回true;
}
}
您还可以使用SpringMVC配置来获取拦截器应用于登录页面
但无论如何,如果你想构建一个认真的应用程序,我的建议是看看很好地集成在一个Spring MVC应用程序中,并带有一堆示例来避免上述问题(以及其他......)
I am newbie to spring framework.In my code,i use the interceptor for checking the session exists or not.If session exists i allow to call the controller otherwise i redirect the login page.Below is my code.
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Users user=(Users) session.getAttribute("user");
if(user == null)
{
System.err.println("Request Path : ");
response.sendRedirect("index");
return false;
}
else
{
return true;
}
}
but this code not redirect successfully.I am getting the below error,
In Mozilla i get below error
The page is not redirecting properly
In chorme i get below error?
This web page has redirect loop
How to fix this issue?Any help will be greatly appreciated!!!
Just a wild guess, because you forgot to say how your interceptor is configured. I think it could be caused by the interceptor being applied to the login page index
.
If this is true any page will ask the browser to redirect to index
page, but index
page itself will send a redirect request to browser.
The correct way is to configure the interceptor to ignore the login page
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
// ignore login page
if (request.getServletPath() == "/index") { // BEWARE : to be adapted to your actual login page
return true;
}
Users user=(Users) session.getAttribute("user");
if(user == null)
{
System.err.println("Request Path : ");
response.sendRedirect("index");
return false;
}
else
{
return true;
}
}
You could also use SpringMVC configuration to have the interceptor not applied to the login page
But anyway, if you want to build a serious application, my advice is to have a look to Spring Security that nicely integrates in a Spring MVC application and comes with a bunch of examples to avoid above problem (and others ...)
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