spring Ioc Aop整合
之前用DWP项目做spring的IOC，xml总是提示有问题，之后改用maven通过。
之后将这一块的内容补充。
仔细考虑一下spring 的IOC是无处不在的，演示Aop也需要依赖spring的IOC。
spring Aop例子。
本文例子在http://www.blogjava.net/javadragon/archive/2006/12/03/85115.html基础上进行些许修改，首先项目结构图：
其次运行结果图：
最开始的pom文件（property与dependency可以复制）
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.spring</groupId> <artifactId>mavenAop</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>mavenAop Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.19</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>3.0.5.RELEASE</version> </dependency> <dependency> <groupId>org.apache.geronimo.specs</groupId> <artifactId>geronimo-servlet_2.5_spec</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.0.5.RELEASE</version> </dependency> </dependencies> <build> <finalName>mavenAop</finalName> </build> <properties> <springVersion>3.2.5.RELEASE</springVersion> </properties> </project>
其次是主类的接口
package com.dragon.study; public interface IStudent { public void addStudent(String name); }
主类的实现
package com.dragon.study.Impl; import com.dragon.study.IStudent; public class StudentImpl implements IStudent { public void addStudent(String name) { // TODO Auto-generated method stub System.out.println( " 欢迎 " + name + " 你加入Spring家庭! " ); } }
前置、后置、环绕通知
package com.dragon.Advice; import java.lang.reflect.Method; import org.springframework.aop.MethodBeforeAdvice; public class BeforeAdvice implements MethodBeforeAdvice { public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable { // TODO Auto-generated method stub System.out.println( " 这是BeforeAdvice类的before方法. " ); } }
package com.dragon.Advice; import java.lang.reflect.Method; import org.springframework.aop.AfterReturningAdvice; public class AfterAdvice implements AfterReturningAdvice { public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable { // TODO Auto-generated method stub System.out.println("这是AfterAdvice类的afterReturning方法."); } }
package com.dragon.Advice; import org.aopalliance.intercept.MethodInterceptor; import org.aopalliance.intercept.MethodInvocation; public class CompareInterceptor implements MethodInterceptor { public Object invoke(MethodInvocation invocation) throws Throwable { // TODO Auto-generated method stub Object result = null; String stu_name = invocation.getArguments()[0].toString(); if ( stu_name.equals("dragon")){ //如果学生是dragon时,执行目标方法, result= invocation.proceed(); } else{ System.out.println("此学生是"+stu_name+"而不是dragon,不批准其加入."); } return result; } }
其次进行bean文件配置
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:cache="http://www.springframework.org/schema/cache" xsi:schemaLocation=" http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <bean id="beforeAdvice" class="com.dragon.Advice.BeforeAdvice"></bean> <bean id="afterAdvice" class="com.dragon.Advice.AfterAdvice"></bean> <bean id="compareInterceptor" class="com.dragon.Advice.CompareInterceptor"></bean> <bean id="studenttarget" class="com.dragon.study.Impl.StudentImpl"></bean> <bean id="student" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="proxyInterfaces"> <value>com.dragon.study.IStudent</value> </property> <property name="interceptorNames"> <list> <value>beforeAdvice</value> <value>afterAdvice</value> <value>compareInterceptor</value> </list> </property> <property name="target"> <ref bean="studenttarget"/> </property> </bean> </beans>
最后测试类
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.dragon.study.IStudent;
public class Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ctx =new ClassPathXmlApplicationContext("bean.xml");
IStudent person = (IStudent)ctx.getBean("student");
person.addStudent("drasdfgon");
}
}
