java spring framework interview questions

Java framework --- spring AOP implementation principleAOP (Aspect-OrientedProgramming) can be said to be a supplement and perfection of OOP (Object-Oriented Programing, object-oriented programming. OOP introduces concepts such as encapsulation, inheritance, and Polymorphism to establish an object hierarchy to simulate a set of public behaviors. When we need to in

to prototype scope1 2 3 xmlns:xsi=" Http://www.w3.org/2001/XMLSchema-instance "4 xsi: schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans.xsd ">56 class=" Com.example.spring.HelloWorld "scope=" Prototype">7 8 Run output:Your message:i ' m object a13:52:03.767 [main] DEBUG org.springframework.beans.factory.support.defaultlistablebeanfactory-creating instance of b

://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd ">On the inside first configure the DataSource and Sqlsessionfactorybean configuration as follows:Then write a test class to test whether the sqlsessionfactory can be loadedThe main code is as follows:public class Testsqlsessionfactory {@Testpublic void Test1 () {ApplicationContext AC =New Classpathxmlapplicationcontext ("Applicationcontext.xml");Syst

case if there is only one userinfo_name in the Beans.xml. * More, you cannot use this, so the introduction can be used with the following method *userinfo User=ctx.getbean (Userinfo.class); */ //a method with parameters//UserInfo User=ctx.getbean ("Userinfo_name", userinfo.class);System.out.println (user); /*Attach: Initialize the container, you can also write *applicationcontext ctx= new Classpathxmlapplicationcontext ("Beans.xml"); * Because ApplicationContext is the

@RequestMapping (value={"/"},method={requestmethod.head}) PublicString Head () {return"Go.jsp";}//handling "/index" and "/" Requests for get types@RequestMapping (value={"/index", "/"},method={requestmethod.get}) PublicString index (model model)throwsException {logger.info ("======processed by index======="); //return msg parameterModel.addattribute ("msg", "Go Go go!");return"Go.jsp"; }}This is a separate way of handling the head request, which can be used to detect the state of the server be

Spring is an open-source framework created by Rod Johnson. It is created to solve the complexity of enterprise application development. Spring uses the basic Javabean to complete the previous tasks that may only be completed by EJB. However, spring is not only used for server-side development. From the perspective of s

application}The method must be implemented, and the method is automatically calledThis method, in the process of being called, passes the created Request object to you through parameters, which you can assign to the variables in this class, and then request to use theNote: the Setservletrequest () method must be executed before the Execute () method is called4. Let's write our JSP file nextHere, let's expand the knowledge of Struts2 's label.STRUTS2 tags in use, when to use #, when can not be u

With the completion of the project framework, I thought the launch would be successful, but ....Project Start report Error 1:java.lang.classnotfoundexception:org.springframework.web.context.contextloaderlistenerThis mistake Baidu to say is missing this package, but actually in the project see Maven inside there is this package. So continue Baidu to "may package is found, but not dependent on the project"Project Right-click-----Project-----Deployment a

separately, support two kinds of third-party SMS quotient Interface6. Spring AOP Transaction Processing7. Code generator (freemarker), code zip compression packaging8. MD5 Encryption SHA encryption (login password with this encryption) interface to encrypt the identity check9. Database connection Chi Ali Druid. Druid has significant advantages in monitoring, scalability, stability, and performance to support concurrent10. Join the security

;Importorg.junit.Test;ImportOrg.springframework.context.ApplicationContext;ImportOrg.springframework.context.support.ClassPathXmlApplicationContext;ImportCom.bjsxt.model.User;//Dependency Injection//Inverse of Control Public classuserservicetest {@Test Public voidTestadd ()throwsException {classpathxmlapplicationcontext ctx=NewClasspathxmlapplicationcontext ("Beans.xml"); UserService Service= (UserService) ctx.getbean ("UserService"); System.out.println (Service.getclass ()); Service.save

component model. The reality is that people are investing a lot in all aspects related to the Java EE. It may seem plausible to announce the abandonment of all previous work and to organize it, but it is not based on good business insights. EJB continues to evolve, and terminology, practices, and frameworks emerge (spring up), which make up for the inadequacy of the Ja