java spring framework interview questions

difference between the 5.sendRedirect () and Forward () methods?The Sendredirect () method creates a new request, and the forward () method simply forwards the request to a new target. After redirection (redirect), objects that were within the scope of the previous request are invalidated because a new request is generated, and after forwarding (forwarding), objects within the scope range of the previous request can be accessed. Sendredirect () is generally considered to be slower than forward

verification) We understand the role of this module as a facet, telling us that it is a functional module. We can think of it as a facet. To put it bluntly, we write a class. Write a method in this class that deals with the same effect in the core business.We also need to know two keyword:　connection point (Joinpoint), a simple understanding is the method defined in the tangent module. Is the method in the definition class above.　pointcut (Pointcut). Is the collection of connection points, whic

The dashed box represents the interface, the solid wireframe represents the entity class, The thick wireframe represents the most commonly used entity classes, the dashed arrows indicate the implementation of the interface, and the implementation arrows indicate that the class can make objects of the class that the arrows refer to. Collection: Allows only one object to be placed in each location. It includes a list of "holding a set of objects in a certain order", and a set that "only allo

This is your own reference Springside Integration Framework for open source projects. The main integration of spring, Spring MVC, Spring data JPA, hibernate several frameworks, still feel more comfortable in these frameworks spring data JPA the

This is your own reference to the Springside Open source Project Integration Framework, the main integration of spring, Spring MVC, Spring data JPA, hibernate these frameworks, for these frameworks it feels more comfortable or spring data JPA this

Contents of the Applicationcontext.xml configuration fileSummary of steps:1. Build a dependent jarSpring must jar (6)Hibernate must jarIntegration requires at least 3 jar,spring-jdbc.x.x to be imported, spring-tx.x.x,spring-orm.x.x2. The goal is to create a sessionfactoryManage Localsessionfactorybean to the spring IOC

Spring is an open source framework, and spring is a lightweight Java development framework that emerged in 2003 by Rod Johnson in his book expert one-on-one development and Some of the concepts and prototypes elaborated in design are derived. It is created to address the com

Java framework --- spring dependency injection, java --- spring There are four spring dependency injection methods. Constructor Injection Property Injection Factory Injection Annotation Injection An example is provided below

code is formatted, comprehensive comments, beautiful and easy to read.11, detailed record system operation log, help the operation and maintenance personnel for system analysis and troubleshooting.12, using Ehcache two cache, Spring MVC static load cache and other mechanisms to improve system performance.13, the data persistence layer is divided into hibernate and MyBatis two big architectures. 2 sets of systems, in addition to the data persistence l

Java framework --- spring AOP implementation principle --- spring AOPWhat is AOP? AOP (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 o

and implementation of interface Autowirecapablebeanfactory Configurablelistablebeanfactory:beanfactory configuration checklist, specifying the green type and interface Defaultlistablebeanfactory: Combines all of the above functional groups to be processed after the bean is registered 2.XmlBeanDefinitionReader From this diagram we can see how this class is packaged in a step-by-step way.

principle-chain call notification method. avi36. Declarative transaction-Environment construction. avi38. [Source code]-Declarative transaction-source code analysis. avi40. Extension principle-beandefinitionregistrypostprocessor.avi42.-applicationlistener principle of extension principle. avi44, [Source]-spring container Creation-beanfactory pre-preparation. avi46, [Source]-spring container Creation-regist

method of storing elements. The Map collection class is used to store element pairs (called "Keys" and "values"), where each key is mapped to a value.They all have the method of increasing the pruning and checking.For set, the approximate method is Add,remove, contains, etc.For map, the approximate method is put,remove,contains, etc.The list class will have a method such as get (int index), because it can take elements sequentially, and the set class does not have a method such as get (int inde

Why should we learn the advantages of the spring framework in the Java framework? Why learning the Spring framework?A: convenient decoupling and simplified developmentSpring is a large factory that allows you to create all object

1. Java JDK and Tomcat installationI am installing JDK 1.8 and Tomcat 8 here, as described in the installation steps: http://www.cnblogs.com/eczhou/p/6285248.html2. Download Eclipse and installI am installing the Java EE Neon 64-bit version here.3. Build the Spring MVC Project3.1. Open the installed Eclipse and select File->new->other. Select Web->dynamic Web Pro

, instead of this use useless, the use of nothing, generally such, two words, no, And some of the problems that you encounter when building a framework, and how you overcome them, can also be used to say that making your conversations seem more real and giving people the feeling that the child has really done it. Yesterday reference some articles, set up a Dubbo Zookeeper Spring Integration

: hibernate always uses the locking mechanism of the database, never locking objects in memory! Just specify the isolation level for the JDBC connection, and then let the database take care of everything.class Lockmode defines the different locking levels required for hibernateLockmode.upgrade,lockmode.upgrade_nowait,lockmode.read;hibernate refused connection, server crashes cause1. DB does not open 2. There may be a problem with the network connection 3. The connection configuration is 4 wrong.

To develop a feature based on spring, you need to add the development support environment for spring. The so-called spring support environment is to add the jar, TLD, and XML files needed for spring in a Java Web application, and with these files we can develop the

There are many limitations to using mybatis alone (such as the inability to implement transactions spanning multiple sessions), and many business systems are inherently transactions that are managed using spring, so mybatis is best integrated with spring. Version requirements Project Version Download Address Description MyBatis 3.0 and above Https://github.com/my

, the spring framework can standardize many of the best practices of Java EE, as well as homogenize many ubiquitous Java EE patterns. Next, we'll look at a small part of spring's huge system, focusing on (in my humble opinion) the ability to help improve the functionality of the Ja