struts2 interceptor

This. Interceptors.add (Newfirstinterceptor ());8 This. Interceptors.add (Newsecondinterceptor ());9 This. Interceptors.add (Newthirdinterceptor ());Ten } One Public voidInvoke () { Aindex++; - - if(Index >= This. Interceptors.size ()) { the A.execute (); -}Else { - This. Interceptors.get (Index). Interceptor ( This); - } + } -}5. Running Public class Main { publicstatic

1. The use of finally:public static int Geta () {try{String a = "123";S.equals ("123");return 3;}catch (Exception e) {return 4;}finally{Return 5;//no matter if the exception is not, finally must be executed}}public static void Main (String args[]) {int A=geta ();Sysout (a);//a=5}2, MySQL garbled problemCompared to Gbk,utf-8: The range is large, all recognize Chinese3, development to layered (object-oriented)Dao (persistence layer) Business Service Layer Control layer4. servlet processThe display

The StrutsConversionErrorInterceptor interceptor is at the position of defastack stack 16th and is used to handle type conversion errors. The interceptor inherits from ConversionErrorInterceptor and most of its functional logic is in ConversionErrorInterceptor, strutsConversionErrorInterceptor only overwrites the two methods, namely the getOverrideExpr and shouldAddError methods. Because the ConversionError

I picked two struts2 interceptor configuration methods from the official website and recorded them myself: Method 1: configure a single interceptor Method 2: configure the interceptor through the interception Stack The third method is to reference struts2 as our default

In Struts2, we can easily prevent form repeat submission with Struts2 's token blocker!1. In the corresponding action configuration, add:"token">"Invalid.token">/error.jsp2. Add the error.jsp file with the following code:3. Add the:Xml:Xmlns= "HTTP://JAVA.SUN.COM/XML/NS/J2EE"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation= "Http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/

Login. jsp page body Show. jsp page body Page with the permission to log on: The show. jsp page is displayed only when the username is admin and the password is admin. Otherwise, the login. jsp page is returned. The loginaction class is a simple login action. public class LoginAction extends ActionSupport{private String username;private String password;public String login(){System.out.println(username+"---"+password);return "login";}public String getUsername() {return username;}public voi

Logininterceptor. Java Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Package com. tq365.util;Import javax. servlet. http. httpservletrequest;Import javax. servlet. http. httpsession;Import org. Apache. struts2.servletactioncontext;Import com. opensymphony. xwork2.actioninvocation;Import com. opensymphony. xwork2.interceptor. abstractinterceptor;Import c

I. Configuring and Using InterceptorsTo use interceptors in struts-default.xml, simply add the Struts.xml configuration file to theand inherit one of the Struts-default packages (package)Finally, when you define an action, use theReference interceptors or interceptor stacks.ExampleCreate a new action classpublic class Timterinterceptoraction extends Actionsupport {@Overridepublic String execute () throws Exception {try {Threa D.sleep (500);} catch (Ex

The first type: Some beans in the spring configuration file are usually called with ApplicationContext, so the spring context container is created first. ApplicationContext AC = (applicationcontext) invocation.getinvocationcontext (). Getapplication (). Get ( Webapplicationcontext.root_web_application_context_attribute); The invocation in the above code is the parameter of the Struts2 Interceptor method int

7.3 simple interceptorPackage Lee; Import com. opensymphony. xwork2.actioninvocation;Import com. opensymphony. xwork2.interceptor. abstractinterceptor;Import java. util .*; /*** @ Author yeeku. H. Lee kongyeeku@163.com* @ Version 1.0* * * * */Public class simpleinterceptor extends actinterceptor{Private string name;Public void setname (string name){This. Name = Name;} Public String intercept (actioninvocation Invocation) throws exception{Loginaction a

. opensymphony. xwork2.interceptor. abstractinterceptor; import COM. ywjava. utils. constants; public class logininterceptor extends actinterceptor {@ overridepublic string intercept (actioninvocation Invocation) Throws exception {// get the actioncontext instance actioncontext CTX = invocation related to the request. getinvocationcontext (); map session = CTX. getsession (); string user = (string) session. get (constants. user_session); // assume tha

StaticParametersInterceptor: the interceptor is in the defaultStack 13th position. It is used to fill in the static parameters configured for Action in the struts2 configuration file through the

Detailed description of interceptor in Struts2What is the interceptor? An Interceptor is a mechanism that allows users to process functions before and after the Action is executed.The sequence of the interceptor before the action is executed is the opposite of that after the result is executed. You can see: That is, th