spring service annotation

of the AOP, the more executed first. (Chain mode)，So we need to add the Order property to/> in 。 This is a transaction nesting.So let's look at the example above: When a Class (Test) is using @transactional in a Oddtech.service.impl package, we want the Insert method to be read-only, Read-only=true, So we need to define this: @Transactional (readOnly = true,propagation=propagation.required), why?In a declarative transaction, our transaction propagation level for insert is defined as: REQUIRED,

Spring opens annotation The difference between are used to activate beans that have already been registered in the Spring container, either through XML or through the package sanning.Let's take a look at their differences in detail below, with three class a,b,c, and the B,c object is injected into A.Package Com.xxx;public Class B {public B () { System.out.pri

[] args) {ApplicationContext ctx=NewClasspathxmlapplicationcontext ("Bean.xml"); Performer Performer= (performer) Ctx.getbean ("Xingoo"); Performer.perform (); }}The following are the key configuration filesThe configuration file at this point is aware that spring will know which one is the normal bean and which is the notification. It is therefore necessary to add an attribute to ensure that AOP automatically recognizes notifications.Class="true"/

, there is no ambiguity and it is recommended. 2. Automatic assembly according to type (Bytype). The spring container may find multiple beans of the same type as the bean that needs to be injected, so there is ambiguity, and the spring container does not know which bean to inject, and throws an exception. 3. Automatic assembly according to the constructor (constructor). This approach is more complex and doe

spring2.5 provides annotations (annotation-based)-based configuration, which we can use to complete injection dependencies. In Java code, you can use @Resource or @autowired annotations to line-inject. Although both @resource and @autowired can be used to complete the injection dependency, there is a difference between them. First Look at: @Resource By default is assembled by name, only if the bean that matches the name is not found to assemb

 Description and Difference spring4.1 provides annotations (annotation-based)-based configuration, which we can use to complete injection dependencies. In Java code, you can use @Resource or @autowired annotations to line-inject. Although both @resource and @autowired can be used to complete the injection dependency, there is a difference between them. First Look at: A. @Resource By default is assembled by name, only if the bean that matches the n

annotation interceptor is implemented to add an annotation to the required interception method @accessrequired Examples of usages in the Spring MVC controller /** * Annotation Blocker method * @return */@RequestMapping (value= "/urlinter", Method=requestmethod.get) @AccessRequiredpublic @ Responsebody String urlinterc

Spring AOP is based on the annotated "0 configuration" approach:In the beans.xml of springIn the main method of Beantest　// 1. Create a spring IOC container New　　Classpathxmlapplicationcontext ("Beans.xml"); ///2, get bean Hello hello = Ctx.getbean ("Hello", hello.) from the IOC container. 　　Class);　　 //3, method of calling Bean hello.foo (); Hello.adduser ("Monkey King", "7788");Use the @aspect to declare

Transferred from: http://snowolf.iteye.com/blog/577989 Some changes have taken place in recent work, so it is necessary to learn the spring annotations. On the Internet to find some examples, in general, compared to the soil, most of the reprint excerpt, follow the instructions to get down at all can not run, simply go through this muddy water, here leave thousand imprint. This time, let's build a very simple Web application, from controller to DAO. R

://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:tx= "Http://www.springframework.org/schema/tx"Xmlns:context= "Http://www.springframework.org/schema/context"Xmlns:mvc= "Http://www.springframework.org/schema/mvc"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:task= "Http://www.springframework.org/schema/task"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/

The role of the spring framework: To simplify Java developmentSpring 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 complexities of enterprise application developmentI. IOC (Control reversal)1

Filter Type Examples Expression Description Annotation Org.example.SomeAnnotation Target class conforming to Someannoation Assignable Org.example.SomeClass Specify the full name of class or interface Aspectj Org.example. *service+ AspectJ Language method Regex Org\.example\. default.* Regelar Expres

Error in loading TX: annotation-driven by spring The cvc-complex-type.2.4.c: the matching wildcard is strict, but no declaration can be found for element 'tx: annotation-driven '. The reason is that Tx is not configured properly. In the spring configuration file, modify Xmlns = "http://www.springframewo

Beans.xml:Userservicetest.java:Package Com.bjsxt.service;import Org.junit.test;import Org.springframework.context.applicationcontext;import Org.springframework.context.support.classpathxmlapplicationcontext;import com.bjsxt.model.user;//dependency Injection//inverse of Controlpublic class Userservicetest {@Test public void Testadd () throws Exception {CLASSPATHXMLAPPL Icationcontext CTX = new Classpathxmlapplicationcontext ("Beans.xml"); UserService service