interceptor

listener/filter/servlet/interceptor解析 1、职责 listener : 针对对象的操作监听，如session的创建 ，用来做在线用户统计 filter ： 可用来进行字符编码的过滤，检测用户是否登陆的过滤，禁止页面缓存等 针对URL servlet ： 业务处理请求进行控制 针对URL interceptor ： 拦截器，类似于filter，但不是针对URL而是针对类，例如AOP动态代理，在调用某个方法前后搞些事情 2、执行顺序 listener->filter->servlet->interceptor 销毁顺序反向 来源： oschina 链接： https://my.oschina.net/u/2401742/blog/891995

I have following action mapping <action name="theAction" ...> ... <param name="param1">one</param> <param name="param2">two</param> ... <param name="paramN">nth-number</param> ... </action> I can get parameter map using following line in Interceptor Map<String, Object> params = ActionContext.getContext().getParameters(); Just as above, is there any way to get interceptor parameters as defined in following mapping. <action name="theAction" ...> ... <interceptor-ref name="theInterceptor"> <param name="param1">one</param> <param name="param2">two</param> ... <param name="paramN">nth-number</param

Struts2 provide Token Interceptor for ensures that only one request per token is processed, But, I don't understand how it works, if a user send the one request twice what happens? Does the user get an invalid token or get response of the first request? What is a logic behind this interceptor? The token interceptor returns the result invalid.token when an invalid token is found. The logic is simple: it uses a session to save a valid token per request and when intercept it checks it by comparing one that sent and other that is from session. 来源： https://stackoverflow.com/questions/17807964/how

I am trying to perform formal auditing of my Spring web services requests/responses. I have this in place in my Spring configuration: <ws:interceptors> <bean class="org.springframework.ws.soap.server.endpoint.interceptor.SoapEnvelopeLoggingInterceptor"/> </ws:interceptors> This is fine, and logs the requests and responses to my JBoss log file. What I want though, is to be able to adapt this and log these requests/responses a little cleaner and how can I get hold of of the data, so I can write to an audit record in the DB. How can I adapt this above so I can map to one of my beans or similar

一、 ModelDriven的运行机制 大家都知道前台表单数据向后台传递的时候，调用的Action会实现ModelDriven接口。伪码如下： VO伪码： public class User { private String userName; private String password; //setter and getter //.... } Action伪码： public class UserAction implements ModelDriven { private User user = new User(); public String addUser() { //相应的业务逻辑 } @Override public Object getModel() { return user; } } JSP伪码： <form action="xxx/user-add.action" method="post"> username:<input type="text" name="username" /> password:<input type="text" name="password" /> <input type="submit" name="submit" value="添加" /> </form> 上面的代码相信大家非常熟悉

I am designing a basic application in which User provides his user id and password and if the login is successful he is redirected to home page. Now for the validation I want to use interceptors if the user id and password are not empty. But I am not able to find out how I can access the values of request parameters in Interceptors. JSP Code <s:form action="Login.action" method="post"> <s:textfield label="Username" name="bean.userId"/> <s:submit value="Login" /> </s:form> Model @Entity @Table(name="login") public class Login implements Serializable { public Login() { } public Login(String

I am testing flume to load data into hHase and thinking about parallel data loading with using flume's selector and inteceptor, because of speed gap between source and sink. So, what I want to do with flume are creating Event's header with interceptors's regex_extractor type multiplexing Event with header to more than two channels with selector's multiplexing type in one source-channel-sink. and tried configuration as below. agent.sources = tailsrc agent.channels = mem1 mem2 agent.sinks = std1 std2 agent.sources.tailsrc.type = exec agent.sources.tailsrc.command = tail -F /home/flumeuser/test