interceptor

I am trying to intercept http responses and redirect any 401's but the err object below is only returning me the following string. I was expecting to at least find the status code.. 401 - Unauthorized Details: Http failure response for http://localhost:4200/api/foo : 401 Unauthorized I can see in the network tab that a well formed 401 is being returned by the server. Any ideas on how I can read them correctly? intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { const authRequest = request.clone({ setHeaders: { Authorization: `Bearer ${this.authService.getToken

前言 Mybatis提供了强大的扩展功能，也就是Mybatis的插件（plugins）功能；MyBatis允许你在已映射语句执行过程中的某一点进行拦截调用，拦截之后可以对已有方法添加一些定制化的功能，比如常见的分页功能；试图修改或重写已有方法的行为的时候，你很可能在破坏MyBatis 的核心模块，这些都是更低层的类和方法，所以使用插件的时候要特别当心。 如何扩展 1.拦截点 拦截的点一共包含四个对象，若干方法，具体如下： Executor (update, query, flushStatements, commit, rollback, getTransaction, close, isClosed) ParameterHandler (getParameterObject, setParameters) ResultSetHandler (handleResultSets, handleOutputParameters) StatementHandler (prepare, parameterize, batch, update, query) 有了拦截点之后，我们需要告诉Mybatis在哪个类下执行到哪个方法的时候进行扩展；Mybatis提供了简单的配置即可实现； 2.如何扩展 使用插件是非常简单的，只需实现Interceptor接口，并指定想要拦截的方法签名即可

前言： 　　 这周在写一个小项目，虽然小但是是纯调外部接口的，调完了接口还不停的循环接口返回的数据（已转换JSONArray），然后再判断值，再做不同处理，关键是数据量还比较大，这刚做完还没开始上线，测试也还没开始测呢，就想着自己先看看每个方法运行效率，省的数据大了项目挂掉（循环判断好多，有时还有2个for嵌套循环），就是纯粹在时间上进行监测，没有内存和cpu的监控。 　　主要利用了Spring AOP 技术，对想要统计的方法进行横切处理，方法执行前开始计时，方法执行后停止计时，得到计时方法就是该方法本次消耗时间。 步骤： 首先编写自己的Interceptor类来实现MethodInterceptor类，来用于切入方法，运行计时代码 Spring AOP 的XML配置，配置需要监测的方法和切入方法（自定义的Interceptor） java代码： package com.cplatform.tencent.task; import java.util.HashMap; import java.util.Map; import org.aopalliance.intercept.MethodInterceptor; import org.aopalliance.intercept.MethodInvocation; import org.apache.commons.lang

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

I need to implemented something like a filter or listener, that intercepts HTTP requests and retrieves the HTTP headers for various purposes. I use Java, Jboss application server and web services. I want this filtering system to be performed prior to the Web Services call - was thinking about aspects but they do not hold the HTTP related stuff. After the filter, the service call should be carried out. Jax-WS handlers don't work for me either as they only hold the SOAP payload. Any ideas? Thanks in advance. can you not create a servlet filter which intercepts all the requests coming to your

MyBatis拦截器介绍 MyBatis提供了一种插件(plugin)的功能，虽然叫做插件，但其实这是拦截器功能。那么拦截器拦截MyBatis中的哪些内容呢？ 我们进入官网看一看： MyBatis拦截器介绍 MyBatis提供了一种插件(plugin)的功能，虽然叫做插件，但其实这是拦截器功能。那么拦截器拦截MyBatis中的哪些内容呢？ 我们进入官网看一看： MyBatis 允许你在已映射语句执行过程中的某一点进行拦截调用。默认情况下，MyBatis 允许使用插件来拦截的方法调用包括：Executor (update, query, flushStatements, commit, rollback, getTransaction, close, isClosed)ParameterHandler (getParameterObject, setParameters)ResultSetHandler (handleResultSets, handleOutputParameters)StatementHandler (prepare, parameterize, batch, update, query) 我们看到了可以拦截Executor接口的部分方法，比如update，query，commit，rollback等方法，还有其他接口的一些方法等。 总体概括为： 拦截执行器的方法

I'm using an interceptor to restrict access to certain users in the app. For instance: @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { Logger.logRequest(request); return list.contains(user); } If the list contains the user, it completes the request. Otherwise, it does nothing. How do I display a custom page if the user doesn't have access? Right now, if it's false, it just shows a blank page which is not great for user experience. It looks like you can do a response redirect without hitting the servlet. The