spring propertyplaceholderconfigurer annotation example

an instance of the ApplicationContext container@Test Public voidGettestempl () {ApplicationContext ApplicationContext=NewFilesystemxmlapplicationcontext ("Classpath:springTest.xml"); //get an instance with ID TestemplSystem.out.println (Applicationcontext.getbean ("Testempl")); }}Print the following information:Empl [Eid=0, ename=testname, password=null, sex=null, birthday=1999-01-01, hiredate=null, Admin=0, Deptno=0, job=0, status=0, funs=null]Summary: This is an

@respository annotation is used on a presentation layer controller component and does not produce any errors.So @respository, @Service, @Controller These annotations are just for the developer to clarify the role that the current component plays.1.3 Scanning componentsComponents are identified by the above annotations and need to be scanned by spring to be able to detect them.① Specifies the package to be

configuration file and specify a simple search path. we can add child element to specify the spring Bean class, as long as the Java class at the specified path satisfies this rule, even if the Java classes do not use any of the annotation annotations, spring will treat them as if they had been bean classes. : The Java class that satisfies this rule will be pro

1. Use @ autowired for automatic Injection Spring uses the @ autowired annotation to implement bean dependency injection. Let's look at an example: 1. Inject class attributes package spring.ioc.autowired;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import spring.ioc.demo1.Car;public c

configuration file and specify a simple search path. we can add child element to specify the spring Bean class, as long as the Java class at the specified path satisfies this rule, even if the Java classes do not use any of the annotation annotations, spring will treat them as if they had been bean classes. : The Java class that satisfies this rule will be pro

Spring provides automatic registration of bean definitions by scanning special annotation classes in the classpath. As with annotation-driven transactions, you need to turn on automatic scanning and register bean definition support in the following ways (Resources/chapter12/componentdefinitionwithannotation.xml): Java code: Java code The The on "

, you can @service ("* *") This specifies that the bean defaults to a single example and, if you want to change, you can use @service ("Beanname")@Scope ("prototype") to change. You can specify initialization methods and destruction methods (any of the method names) by using the following methods: @PostConstruct public void init () {} the difference between @Autowired and @resource 1, @Autowired and @resource can be used to assemble beans. Can be wr

://www.springframework.org/schema/context"xsi:schemalocation= "Http://www.springframework.org/schema/beans Http://www.springframework.org/schema/beans/spring-beans . xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-con Text.xsd "> Turn on annotation scanning - Base-package: All annotations are s

component on classpath, and annotations support the lifecycle approach, A new web controller model maps requests to annotated methods, supports new additions to the junit4,spring XML namespaces in the test framework, and so on. This article is the first of a series of 3 articles exploring these new features. This article will focus on simplified configurations and new annotation-based features that are ad

ClassPathXmlApplicationContext (new String [] {"classpath: applicationContext-mvc.xml", "classpath: applicationContext-dataSource.xml "}); // obtain service or controller component UserController userController = (UserController) ctx. getBean ("userController"); userController. testAOP ("zhangsan", "123456 ");} Database Data: I originally wanted to write two cut points, one is the service layer, the other is the controller layer, the service layer is used to record abnormal information logs,

The previous blog in the Spring Boot integration MyBatis, using the annotated configuration, I believe many people still prefer this elegant way, today we look at spring boot using mybatis annotation configuration detailed; An example of modifying the previous project; method of transmitting parameters The insert opera

Spring,mybatis Transaction Management configuration and @transactional annotation usageOverviewTransaction management is critical for enterprise applications, and it guarantees data consistency even in the event of an exception.The Spring framework provides a consistent abstraction of transaction management, with the following characteristics: Provides a

recompile before you can implement the adjustment.If the Bean is not a class that is written by itself (such as JdbcTemplate, Sessionfactorybean, etc.), the annotation configuration will not be implemented, at which point the XML configuration is the only available method.Annotation configurations are often class-level, and XML configurations can be more flexible. For example, the transaction configuration

"Index";//"web-inf/page/index.jsp" } }requestmapping properties of the annotation classrequestmapping annotation class properties, respectively, value, method, consumes, produces, params, headers1>.value Property• Represents a specific request path, such as "/home" above, "/index" is valuevalue can be omitted, as in the example, directly in the format of th

")Public String findall (){.................}}In this way, you do not need struts. Simply enter XXX. Do in the browser to access the findall method. Common annotation methods in hibernate, such as @ repository, and details: @ Overriide: Specifies to override the parent class method. This annotation can only be used for methods.@ Deprecated: indicates that a program element (class, method) is out of date.@

call to a method, or an exception thrown. In Spring AOP, the connection point is always called by the methodEnhanced processing (Advice): An AOP framework performs enhanced processing at a particular pointcut. Handles types such as "Around", "before", and "after"Pointcut: You can insert a connection point for enhanced processing. In a nutshell, when a connection point satisfies a specified requirement, the connection point is added with enhanced proc