bboss项目下载列表 在sourceforge访问地址为：
https://sourceforge.net/project/showfiles.php?group_id=238653
bboss aop框架中，可以为业务组件配置1到多个拦截器（Interceptor）。这些拦截器必须实现com.frameworkset.proxy.Interceptor接口。拦截器可以对执行方法的4个时间点进行拦截：
l 执行前
l 执行后
l 抛出异常时
l 方法finally块
这些点分别对应com.frameworkset.proxy.Interceptor接口提供的4个方法：
public void before(Method method,Object[] args) throws Throwable;
public void after(Method method,Object[] args) throws Throwable;
public void afterThrowing(Method method,Object[] args,Throwable throwable) throws Throwable;
public void afterFinally(Method method,Object[] args) throws Throwable;
通过实现上述4个方法，bboss aop框架就可以方便地实施对业务组件方法的拦截功能。目前系统缺省提供了一个数据库事务管理拦截器：
com.chinacreator.spi.interceptor.TransactionInterceptor
用来实现bboss persistent框架的声明式事务管理功能，参考博客文章《bboss persistent事务管理介绍》。
下面举例说明拦截器的定义、配置和使用。
定义业务组件和拦截器
l 定义拦截器如下：
**
* 方法拦截器
*
* <p>Title: Insterceptor.java</p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2007</p>
*
* <p>bboss workgroup</p>
* @Date Sep 5, 2008 4:43:47 PM
* @author biaoping.yin
* @version 1.0
*/
public class Insterceptor implements Interceptor {
public void after(Method method, Object[] args) throws Throwable {
System.out.println("Insterceptor.after(" + method.getName() + ", Object[] args)");
}
public void afterFinally(Method method, Object[] args) throws Throwable {
System.out.println("Insterceptor.afterFinally(" + method.getName() + ", Object[] args)");
}
public void afterThrowing(Method method, Object[] args, Throwable throwable)
throws Throwable {
System.out.println("Insterceptor.afterThrowing(" + method.getName() + ", Object[] args, Throwable throwable)");
}
public void before(Method method, Object[] args) throws Throwable {
System.out.println("Insterceptor.before(" + method.getName() + ", Object[] args)");
}
}
l 定义的业务组件接口如下：
package com.chinacreator.spi.interceptor;
import com.chinacreator.spi.constructor.ConstructorInf;
public interface AI {
public void testInterceptorsBeforeafterWithTX() throws Exception;
public void testInterceptorsBeforeAfter() throws Exception;
public void testInterceptorsBeforeThrowing() throws Exception;
public void testInterceptorsBeforeThrowingWithTX() throws Exception;
public void setConst(ConstructorInf inf)
;
}
l 业务组件实现如下：
public class A implements AI{
public void testInterceptorsBeforeAfter() throws Exception {
// System.out.println("testInterceptorsBeforeAfter()");
}
public void testInterceptorsBeforeThrowing() throws Exception {
// System.out.println("testInterceptorsBeforeThrowing()");
throw new Exception("testInterceptorsBeforeThrowing");
}
public void testInterceptorsBeforeThrowingWithTX() throws Exception {
// System.out.println("testInterceptorsBeforeThrowingWithTX()");
throw new Exception("testInterceptorsBeforeThrowingWithTX");
}
public void testInterceptorsBeforeafterWithTX() throws Exception {
// System.out.println("testInterceptorsBeforeafterWithTX()");
}
public void setConst(ConstructorInf inf) {
// TODO Auto-generated method stub
}
}
配置业务组件和拦截器：
在包com.chinacreator.spi.interceptor下建立文件
simplemanager-interceptor.xml
