增加一个方法过滤，可以排除接口上的某些方法不执行路由策略

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What steps will reproduce the problem?
1. 下面代码， 
getTimeStamp方法不需要执行路由策略，代理该接口时调用该方��
�就会抛出异常：

public interface TestService {
    void createWriteMaster(TestRouting testRouting);

    public long getTimeStamp();

    List<TestRouting> getReadSlave(TestRouting testRouting);
}


What is the expected output? What do you see instead?

希望增加一个方法过滤器，可以把不需要代理的方法过滤掉��
� 比如 excludeMethods属性

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Original issue reported on code.google.com by efurture@gmail.com on 24 Jul 2013 at 10:28