IOC (Reverse control) and AOP (Aspect-Oriented Programming) in spring-spring)

I. IOC
Basic injection and set Injection

Entity-class Bean -- configuration file (applicationcontext) -- Test)

1.1 Entity Bean: Property + getter () method + setter () method

public class MyBean {private String url;private String name;private String pwd;private int age;private List list;private Set set;private Map map;private Properties prop;public String getUrl() { return url;}public void setUrl(String url) { this.url = url;}

// ---- The getter () and setter () Methods of other attributes are omitted here ----

1.2 spring configuration file: applicationcontext. xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id="myBean" class="jorton.MyIoc.MyBean">   <property name="url">     <value>www.163.com</value>   </property>   <property name="name">     <value>xuliang</value>   </property>   <property name="pwd" value="123456"></property>   <property name="age">     <value>25</value>   </property>   <property name="list">     <list>       <value>ibm</value>       <value>sun</value>       <value>oracle</value>     </list>   </property>   <property name="set">     <set>       <value>music</value>       <value>sleeping</value>       <value>sports</value>     </set>   </property>   <property name="map">     <map>       <entry key="mySister" value="yanmei"></entry>       <entry key="myMother" value="wenxian"></entry>       <entry key="myFather" value="guoxian"></entry>     </map>   </property> </bean></beans>

1.3 Test class: used to passThe getbean (...) method of applicationcontext gets the property value of mybean.

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Test { public static void main(String[] args) {   ApplicationContext ctx = new ClassPathXmlApplicationContext(       "jorton/MyIoc/applicationContext.xml");   MyBean myBean = (MyBean) ctx.getBean("myBean");   System.out.println(myBean.getUrl());   System.out.println(myBean.getName());   System.out.println(myBean.getPwd());   System.out.println(myBean.getAge());   System.out.println(myBean.getList());   System.out.println(myBean.getSet());   System.out.println(myBean.getMap());   System.out.println(); }}

--------------------------- Running result -----------------------------
Www.163.com
Xuliang
123456
25
[IBM, sun, Oracle]
[Music, sleeping, sports]
{Mysister = Yanmei, mymother = Wenxian, myfather = guoxian}
---------------------------------------------------------------------

2. AOP (Aspect-Oriented Programming)
Aspect Oriented Programming
Target object and transactionaspect -- applicationcontext -- Test)

2.1 target object class (targetobject)

Public class targetobject {public void add () {system. Out. println ("I added something... ");} Public void Update () {system. Out. println (" I updated something... ");}}

2.2Transactionaspect)

Import org. aspectj. Lang. proceedingjoinpoint; public class transactionaspect {public void beforemethod () {system. Out. println ("the operation before the object method starts... ");} Public void aftermethod () {system. Out. println (" operation after the object method... ");} Public object roundmethod (proceedingjoinpoint pjp) throws throwable {system. Out. println (" surround method... "); Object = pjp. Proceed (); system. Out. println (" surround method .... "); Return object;} public void throwmethod () {New runtimeexception (); system. Out. println (" the operation is executed due to an exception... ");} Public void afterreturningmethod () {system. Out. println (" --- afterreturning -- operation... ");}}

2.3Configuration file (applicationcontext)

<? XML version = "1.0" encoding = "UTF-8"?> <Beans xmlns = "http://www.springframework.org/schema/beans" xmlns: AOP = "http://www.springframework.org/schema/aop" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi: schemalocation = "http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <! -- Target object --> <bean id = "targetobject" class = "tarena. myaop. targetobject"> </bean> <! -- Cut surface object --> <bean id = "transactionaspect" class = "tarena. myaop. transactionaspect"> </bean> <AOP: config> <! -- Define aspect --> <AOP: aspect id = "myaspect" ref = "transactionaspect"> <! -- Pointcut --> <AOP: pointcut id = "transcut" expression = "execution (* jorton. myaop. *. * (...)"/> <! -- Define notification -- pre-notification, post-notification, final notification, and surround notification> <AOP: Before pointcut-ref = "transcut" method = "beforemethod"/> <AOP: after pointcut-ref = "transcut" method = "aftermethod"/> <AOP: After-returning pointcut-ref = "transcut" method = "afterreturningmethod"/> <AOP: around pointcut-ref = "transcut" method = "roundmethod"/> </AOP: aspect> </AOP: config> </beans>

 

2.4Test class (TeSt)

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class AOPTest { public static void main(String[] args){   ApplicationContext ctx=new ClassPathXmlApplicationContext(       "tarena/myAop/applicationContext.xml");   TargetObject targetObject= (TargetObject) ctx.getBean("targetObject");   targetObject.add(); }}