java spring framework tutorial for beginners

First, elaborated:IoC: We used to write the framework although we have layered, web, business layer, persistence layer. But the relationships between the layers. The coupling is high, when the layer calls the other layer, the object of the class of the new corresponding layer is needed, so we need to change the call of each layer when we make the modification later.The coupling is relatively high and is not conducive to maintenance.And

Because of the test, recently had to touch the Java spring @Scheduled scheduled tasks, it was thought that the configuration of the expression and crontab is exactly the same, did not expect a bit different.in spring , a cron expression has at least 6 or 7 space-delimited time elements.As follows:Example:0 0/5 * * * is triggered every 5 minutes0 15 10 * *? Trigge

= "java"%> 2 3 4 5 6 7 8 9 Configure TomcatFirst, Tomcat is configured, and the following is a well-configured interfaceRun the project, Access http://localhost:8080/home/What is needed here is to configure Tomcat, set application context, such as application context as "/home", then the root address of the project's server is:http://localhost:8080/home/, then to display the Home.jsp interface should be: Http://localhost:8080/home/h

For convenience sometimes you want to use some of the service in the spring framework in the listener, but because the listener belongs to the Sevlet container and does not fall within the scope of the spring framework, it is an error to expect the service to be loaded directly using annotations such as @Resource in th

configuration of the context /* "3" SET Transaction Management * 3.1 "allows the @transactional tag to be valid * makes @transactional effective and can be dynamically intercepted by means of a method identified in the Bean, which is Advice by the spring framework. Similar to @enableasync, you need to set up @enabletransactionmanagement. But note: For method enhancements, we should use the same approach,

JAVAEE--SPRING01: Introduction, construction, concept, configuration details, attribute injection and application to project Javaee--struts2_04: Custom interceptors, struts2 tags, login functions and check the implementation of the login Interceptor Java EE learning--struts2_ 03:OGNL expressions, OGNL and Struts2 combination and exercises: Customer list Java EE learning--struts2_02: Results jump mode, Acces

The key component of the spring framework is the aspect-oriented programming (AOP) framework. Aspect-oriented programming not only breaks down the logic of the program into different parts called the so-called worry. The functionality of an application that spans multiple points is known as crosscutting concerns and these crosscutting concerns are distinguished f

There has always been a recent exposure to programming principles or patterns such as the IoC (inversion of control, controlled inversion), DI (Dependency injection, Dependency injection), which is at the heart of the famous Java framework Spring, Struts, and so on. According to this check the Wikipedia entries, and from the library to borrow related books, read

beans can be used directly through Xmlns:xsi:Is the specification that XML needs to obey, through the URL can see, is the unified specification of W3, behind through xsi:schemalocation to locate all parse file.XMLNS:AOP:This is the point, and some of the semantic specifications that we need to use here are related to facet-oriented AOP.XMLNS:TX:The transaction-related configuration content in spring.An XML file that can only declare a specification of the default semantic parsing.For example, i

The prototype of Spring IOCthe foundation core and starting point of the spring framework is undoubtedly the core technology that IOC,IOC as a spring container, successfully completing a dependency reversal: from the main class's dependency active management to the spring co

Org.slf4j.Logger; Import Org.slf4j.LoggerFactory; Import com.stone.action.DefaultAction; Public class Logutil { //Use SLF4J to create log objects, when the benefits are changed later to other log tools, just modify the configuration file without modifying the code private static Logger Logger = Loggerfactory.getlogger (logutil. Class); //Use log4j to create a log object Private Org.apache.log4j.Logger Logger = Org.apache.log4j.Logger.getLogger (GetClass ());

For a simple simulation of the Spring framework: a). reading XML configuration file B.) Using Java reflection mechanism to get objects Step one: Create an interface, define a method to get the object Getbean (): Public interface Beanfactory { public Object Getbean (String name); } Step Two: Create a class Xmlcontext to implement the Getbean method in th

Definition of Beanthe backbone that forms the application is the object that is managed by the spring IOC container, called the Bean. The bean is instantiated, assembled, and managed by the spring IOC container. These beans are provided by the container, for example, in the The bean definition contains the container you need to know the following information called configuration metadata: How to cr

/schema/beans/spring-beans.xsd ">5 6 BeanID= "Userdao"class= "Com.example.spring.UserDao">Bean>7 8 BeanID= "UserService"class= "Com.example.spring.UserService" >9 Propertyname= "Userdao"ref= "Userdao"> Property>Ten Bean> One Beans>Note the injected property is the ID of the Userdao class.Writing Application.java1 Packagecom.example.spring;2 3 ImportOrg.springframework.context.support.AbstractApplicationContext;4 ImportOrg.springf

inject DataSource - + Propertyname= "DataSource"ref= "DataSource"> Property> - Bean> $ $ Step Two: Turn on transaction annotations - - Tx:annotation-drivenTransaction-manager= "TransactionManager">Tx:annotation-driven> - the Beans>Then add the annotation @Transactional on the logical business class to1 PackageCn.service;2 3 ImportCn.dao.OrderDao;4 Importorg.springframework.transaction.annotation.Transactional;5 6 @Transactional 7 Public classOrderService {8

In the near future, instead of doing. NET projects, but using Java as a development language, think about using SPRINGMVC development, because the previous years have used struts1/2+hibernate/ibatis+spring developed projects, so there are some foundation. After seeing some SPRINGMVC's introduction on the net, I made a demo.This demo will be divided into several to introduce, today, first of all, the most ba

"Java EE Spring" 12, integrated SSH Framework (end version)Finally, we send the whole project, the code, people do not want to download the project, you can see all the code here (because the project needs a download points, really not much =, I think I have been so long, collect points should not be excessive ... HeyHere, I try to make it, lest the copy and past

; class= "Org.mybatis.spring.SqlSessionFactoryBean" > class= "Org.mybatis.spring.mapper.MapperFactoryBean" > class= "Cn.sxt.service.impl.UserServiceImpl" > "-//mybatis.org//dtd Config 3.0//en" "Http://mybatis.org/dtd/mybatis-3-config.dtd" > package name= "Cn.sxt.vo"/> package name= "Cn.sxt.dao.UserMapper"/> /*Navicat MySQL Data transfersource server:testsource Server version:50520source host:localhost : 3306Source database:orcltarget Server type:mysqltarget server Version:50520file encod

Application.java Packagecom.example.spring;ImportOrg.springframework.context.support.AbstractApplicationContext;ImportOrg.springframework.context.support.ClassPathXmlApplicationContext; Public classApplication { Public Static voidMain (string[] args) {//Where the bean configuration file is located d:\\ideaprojects\\spring\\src\\beans.xml//using the Abstractapplicationcontext containerAbstractapplicationcontext context =NewClasspathxmlapplicationconte

Spring Framework-AOP Overview Note https://my.oschina.net/hava/blog/758873Spring Framework-AOP using note https://my.oschina.net/hava/blog/758881AOP Technology Unit TestReturnThis time has to be divided into:7.00/7.00, the time of submission for this test is:2017-09-11, if you think the test results are not ideal, you can choose to do it again. 1Radio (2 min)The