Jakarta-Common-Chain使用笔记

Jakarta-Common-Chain使用笔记2011-01-28 csdn博客沈斌可以在你需要定义和执行一些顺序操作的时候采用Commons Chain。

下载地址：http://commons.apache.org/downloads/download_chain.cgi

五个工作类：

GetCustomerInfo.jar

package demo.chain;

import org.apache.commons.chain.Command;
import org.apache.commons.chain.Context;

public class GetCustomerInfo implements Command ...{

   public boolean execute（Context context） throws Exception ...{

     System.out.println（"Get customer info"）;
     context.put（"customerName","George Burdell"）;

     return false;
   }
}

TestDriveVehicle.jar

package demo.chain;

import org.apache.commons.chain.Command;
import org.apache.commons.chain.Context;

public class TestDriveVehicle implements Command ...{

   public boolean execute（Context context） throws Exception ...{

     System.out.println（"Test drive the vehicle"）;

     return false;
   }
}

NegotiateSale.jar

package demo.chain;

import org.apache.commons.chain.Command;
import org.apache.commons.chain.Context;

public class NegotiateSale implements Command ...{

   public boolean execute（Context context） throws Exception ...{

     System.out.println（"Negotiate sale"）;

     return false;
   }
}