spring mvc interceptor annotation example

( HttpServletRequest request, HttpServletResponse response, Object handler, Modelandview Modelandview) throws Exception; /** * The entire request is processed by the callback method, that is, callback /void Aftercompletion (HttpServletRequest request) When the view is rendered . HttpServletResponse response, Object handler, Exception ex) throws Exception; } Spring

annotation interceptor is implemented to add an annotation to the required interception method @accessrequiredExamples of usages in the Spring MVC controller? 123456789 /***注解拦截器方法*@return*/@RequestMapping(value="/urlinter",method=RequestMethod.GET)@AccessR

the main page rather than in an inline page.4) The fourth step requires two login.do requests, the code is as follows:When the page is entered, the Login.do request is automatically submitted, but the operation can be judged in logincontroll because the page allows login.do entry.The code is as follows:/* After session timeout, check dto ' s username, and return login.jsp. */if (dto.getusername () = = null) {Modelandview MV = new Modelandview ("login"); return MV;}In the login method, the judgm

1. What is an interceptorInterceptors are enhancements to the functionality of a request that is sent to the server by a unified intercept from the browserThe client browser requests data from the server, which returns the corresponding data to the client, making changes to the request and return data during the request and return process, or adding some code to modify the data before and after the request.2. Usage ScenariosSolve some common problems of the request: garbled problem, permission v

limit, max= upper limit)Validated data type: Charsequence subtypeDescription: Validates the element value length for annotations within min and Max intervals@NotEmptyValidated data types: Charsequence subtype, Collection, Map, arrayDescription: Validation of element values for annotations is not NULL and is not NULL (string length is not 0, collection size is not 0)@Range (min= min, max= max)Validated data types: Bigdecimal,biginteger,charsequence, Byte, short, int, long, etc. atomic type and p

Spring MVC series (iii) spring + springMVC integration (annotation Mode) I personally think that it is not very difficult to use the framework. The key is to understand its ideas, which is very helpful for us to improve programming. However, if you don't use it, you can talk about your thoughts on paper !!! First techn

The first two chapters detail how to build the Maven environment, the process structure of Spring MVC, the differences between Spring MVC and Struts2, and the analysis of some configuration files in the example. In this chapter, I will describe the sample hierarchy and give

Spring-mvc How to use interceptors, official documents give only examples of non-annotation styles. So how do you use interceptors based on the annotation style? Based on annotations There are basically 2 defined classes that can be used, namely defaultannotationhandlermapping and Annotationmethodhandleradapter: 1

fails. @RequestMapping supports accessing URLs using URI templates. A URI template is like a string of URLs, consisting of one or more variable names, and when these variables have a value, it becomes a URI. 3. @PathVariable In spring MVC, you can use the @PathVariable annotation method parameter and bind it to the value of the URI template variable. As shown

Spring MVC Study When spring mvc is added to The configuration is incorrect.Use the Therefore, we recommend that you modify the code ApplicationContext ac = new ClassPa... as follows:ApplicationContext ac = new FileSystemXmlApplicationContext ("..."); // Replace the ellipsis with the configuration path.Ac. getBean

The first two chapters detail how to build the maven environment, spring The process structure of MVC, the differences between spring MVC and struts2, and the analysis of some configuration files in the example. In this chapter, I will describe the sample hierarchy and give

Spring mvc Annotation Starting from Spring 2.5, Spring provides the function of completely configuring beans based on Annotations and assembling beans. We can use annotation-based Spring