Spring+session+interceptor+ajax (Interceptor) Login and exit

Method one uses the httpsession that the servlet comes with

Note the point: httpsession should be used as a parameter of the method

 //log in   
 public    boolean     customerlogin (HttpSession　　　　httpSession) {   Httpsession.setattribute (   " customer "    }    

// Exit Public String customerout (HttpSession HttpSession) {  httpsession.removeattribute (         "Customer"); return"Login";     }

Method Two: Use Spring's @sessionattributes ("Logincustomer")

 / /log in   
  @Controller   @SessionAttributes ( "Logincustomer"  public  class   Customercontroller { public   Jsonobject Customerlogin (@RequestBody jsonobject JSON, Modelmap model,httpservletresponse response) {    Model.addattribute ( "Logincustomer" 

// exit @RequestMapping (value = "Customerout")    public  String customerout ( Sessionstatus sessionstatus) {        sessionstatus.setcomplete (); // only useful for @sessionattributes ("customer"), HttpSession useless         // use Sessionstatus.setcomplete (); Will clear all the sessions,        return "Login";    }

Interceptors (Interceptor)

Note: The interceptor is used in conjunction with Ajax to use this statement response.sendredirect (request. Getcontextpath () + "/login.jsp"); to pass the result to the front end, and then to the front end to achieve the jump

So to determine if the request is an AJAX request

 PackageCom.dessert.interceptor;ImportJava.io.OutputStream;ImportJava.io.PrintStream;ImportJavax.servlet.ServletOutputStream;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;Importjavax.servlet.http.HttpSession;ImportOrg.springframework.web.servlet.ModelAndView;ImportOrg.springframework.web.servlet.handler.HandlerInterceptorAdapter; Public classCommoninterceptorextendsHandlerinterceptoradapter {/** There are three methods in the Interceptor: * Prehandler: Before entering the handler method, the use of identity authentication, identity authorization, login verification, such as identity authentication, the user does not log in, interception is no longer executed, * return value is false, you can implement     intercept; otherwise, when true, the interception does not execute; Posthandler *: After entering the handler method, go back to Modelandview before executing, using the scene from the Modelandview parameter, for example, the common model data is passed here to the view, * can also be unified to specify the view of the display, etc. afterhandler: After executing the handler, this method is implemented, which is used for uniform exception handling, unified log processing, etc.*/@Override Public BooleanPrehandle (httpservletrequest request, httpservletresponse response, Object handler)throwsException {HttpSession session=request.getsession (); if(Session.getattribute ("Logincustomer")! =NULL) {//System.out.println (Session.getattribute ("Costomer"));                return true; }            //if it is an AJAX request, the request header will have X-requested-withString Requestwith = Request.getheader ("X-requested-with"); if(Requestwith! =NULL&& requestwith.equalsignorecase ("XMLHttpRequest")){                if(Session.getattribute ("customer") = =NULL) {                    return false; } Else if(Session.getattribute ("Logincustomer")! =NULL) {                    return true; }            } Else{response.sendredirect (Request. Getcontextpath ()+ "/login.jsp"); }            return false; } @Override Public voidPosthandle (httpservletrequest request, httpservletresponse response, Object handler, Modelandview Modeland View)throwsException {} @Override Public voidaftercompletion (httpservletrequest request, httpservletresponse response, Object handler, Exception ex) 
    throwsException {}}

Configuration of interceptors in the SPRINGMVC

<mvc:interceptors>        <Mvc:interceptor>            <!--The URL path is matched, and if not configured or/**, all controllers will be blocked -            <mvc:mappingPath="/**" />            <!--<mvc:exclude-mapping path= "/index.jsp"/> -            <mvc:exclude-mappingPath= "/*login" />            <mvc:exclude-mappingPath= "/forgotpwd" />            <mvc:exclude-mappingPath= "/customerregister" />            <mvc:exclude-mappingPath= "/vaildtel" />            <mvc:exclude-mappingPath= "/css/**" />            <mvc:exclude-mappingPath= "/js/**" />            <mvc:exclude-mappingPath= "/myutil/**" />            <mvc:exclude-mappingPath= "/images/**" />            <!--<mvc:exclude-mapping path= "/*.html"/> -            <Beanclass= "Com.dessert.interceptor.CommonInterceptor">            </Bean>        </Mvc:interceptor>        <!--when multiple interceptors are set, the Prehandle method is called sequentially and then the Posthandle and Aftercompletion methods of each interceptor are called in reverse order -</mvc:interceptors>

Spring+session+interceptor+ajax (Interceptor) Login and exit