Spring与代理模式和实例工厂模式的整合使用

公司的一个项目，觉得这个设计挺有意思的，记录下来，可能日后会用到。

只记录了大概的一些具有代表性的代码，因修改过公司的包名等一些敏感性的关键字，可能class或者Interface有些错误,但不影响理解。

		
		
			com.neil.ticket.ACompanyTicketInvoker
		


		
		
			com.neil.ticket.BCompanyTicketInvoker
		

package com.neil;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ServiceRebootableProxy implements InvocationHandler {
    private ServiceRebootable serviceRebootable;
    private Class targetClass;

    public void setServiceRebootable(ServiceRebootable serviceRebootable) {
	this.serviceRebootable = serviceRebootable;
    }

    public void setTargetClass(Class targetClass) {
	this.targetClass = targetClass;
    }

    public static  T getInstance(ServiceRebootable rebootable, Class targetClass) {
	ServiceRebootableProxy proxy = new ServiceRebootableProxy();
	proxy.setServiceRebootable(rebootable);
	proxy.setTargetClass(targetClass);
	Class[] interfaces = null;
	if (targetClass.isInterface()) {
	    interfaces = new Class[] { targetClass };
	} else {
	    interfaces = targetClass.getInterfaces();
	}
	return (T) Proxy.newProxyInstance(targetClass.getClassLoader(), interfaces, proxy);
    }

    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
	try {
	    Object obj = serviceRebootable.get(targetClass);
	    if (obj == null) {
		obj = serviceRebootable.create(targetClass);
	    }
	    return method.invoke(obj, args);
	} catch (Throwable ex) {
	    serviceRebootable.destroy(targetClass);
	    throw ex.getCause();
	}
    }

}









		
				
				
					
					
					
				
				
				
					
					
					
				
			
		



==========================================


package com.neil.util;

public interface ServiceRebootable {

    Object get(Class clazz);

    Object create(Class clazz);

    void destroy(Class clazz);

}



==========================================



package com.neil.util;

import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class CommonServiceRebootable implements ServiceRebootable {
    private Map serviceMap = Collections.synchronizedMap(new HashMap());
    private List services;
    private Logger log = LoggerFactory.getLogger(this.getClass());

    public void setServices(List services) {
	this.services = services;
    }

    public Object create(Class clazz) {
	Initializable s = find(clazz);
	s.init();
	serviceMap.put(clazz, s);
	log.info(s.getClass().getCanonicalName() + "创建");
	return s;
    }

    public void destroy(Class clazz) {
	Initializable s = (Initializable) serviceMap.remove(clazz);
	if (s != null) {
	    s.destroy();
	    log.info(s.getClass().getCanonicalName() + "销毁");
	}
    }

    public Object get(Class clazz) {
	return serviceMap.get(clazz);
    }

    private Initializable find(Class clazz) {
	for (Initializable s : services) {
	    if (s.getClass().equals(clazz)) {
		return s;
	    }
	}
	log.error("找不到类" + clazz + "的实例");
	return null;
    }
}




==========================================



package com.neil.ticket;


public class ACompanyTicketInvoker extends AbstractTicketInvoker implements TicketInvoker, Initializable {
	
	private Logger log = LoggerFactory.getLogger(this.getClass());
	
	private String agentId;
	private String secretAuthenticationKey;
	private String providerDomainName;
	
	
	public void init() {
	}



	/**
	 * 预订
	 */
	public OrderResult buy(List params) throws ServiceException {
		//....
		return orderResult;
	}

	/**
	 * 订单取消
	 */
	public BaseResult cancel(TicketRecord ticketRecord) throws ServiceException {
		//....
		return baseResult;
	}

	/**
	 * 订单状态查询
	 */
	public QueryOrderResult queryOrder(TicketRecord ticketRecord) throws ServiceException {	
	    //....	
		return queryOrderResult;
	}

	
	public String getProvider() {
		return "ACompany";
	}
	public void destroy() {
	}
	
	
	
	public String getAgentId() {
		return agentId;
	}
	public void setAgentId(String agentId) {
		this.agentId = agentId;
	}
	public String getSecretAuthenticationKey() {
		return secretAuthenticationKey;
	}
	public void setSecretAuthenticationKey(String secretAuthenticationKey) {
		this.secretAuthenticationKey = secretAuthenticationKey;
	}
	public String getProviderDomainName() {
		return providerDomainName;
	}
	public void setProviderDomainName(String providerDomainName) {
		this.providerDomainName = providerDomainName;
	}
	
}


==========================================


package com.neil.ticket;

import java.util.HashMap;
import java.util.List;
import java.util.Map;


public abstract class AbstractTicketInvoker implements TicketInvoker {
    private Map methods = new HashMap();

    public abstract OrderResult buy(List params) throws ServiceException;

    public abstract BaseResult cancel(TicketRecord ticketRecord) throws ServiceException;

    public abstract String getProvider();

    public abstract QueryOrderResult queryOrder(TicketRecord ticketRecord) throws ServiceException;

    public Object query(String methodName, Object[] args) throws ServiceException {
	AdditionalMethod method = methods.get(methodName);
	if (method == null) {
	    throw new ServiceException("没有这个方法: " + methodName);
	}
	return method.execute(args);
    }

    public void registerMethod(String name, AdditionalMethod method) {
	methods.put(name, method);
    }

}


==========================================



package com.neil.util;

public interface Initializable {

    void init();

    void destroy();

}


==========================================


package com.neil.ticket;

import java.util.List;


public interface TicketInvoker {
    String getProvider();
    
    OrderResult buy(List params) throws ServiceException;
    
    BaseResult cancel(TicketRecord ticketRecord) throws ServiceException;
    
    QueryOrderResult queryOrder(TicketRecord ticketRecord) throws ServiceException;
    
    Object query(String method, Object[] args) throws ServiceException;
    
    BaseResult resendVoucher(TicketRecord ticketRecord) throws ServiceException;	
}