Apache的速度自Uberspect

Question

Apache的速度引導屬性查找規則是：

爲ADRESS屬性（object.address $）

getaddress() 
getAddress() 
get("address") 
isAddress() 

我想改變規則獲得接受可變參數對象參數。因此，它不會叫

get(String name) 

但

get(String name, Object...params) 

我知道它可以通過創建自定義ubespector被propably完成。但我完全不知道怎麼樣。

Answer 1

Finaly挖後第2天，我是能夠使定製Uberspector。其中，如果沒有找到相應的方法將稱之爲「運行（字符串，對象[]）」的方法。標準 「得到（字符串）」 將調用

run(name, new Object[]{}); 

CustomUbersector

import java.lang.reflect.Method; 
import org.apache.velocity.util.introspection.Info; 
import org.apache.velocity.util.introspection.UberspectImpl; 
import org.apache.velocity.util.introspection.VelMethod; 

public class CustomUberspector extends UberspectImpl { 

public VelMethod getMethod(Object obj, String methodName, Object[] args, Info i) 
     throws Exception { 

     if (obj == null) return null; 

     VelMethod vm = super.getMethod(obj, methodName, args, i); 
     if(vm != null) return vm; 

     Object[] iargs = {methodName, new Object[] {}} ; 
     Method m = introspector.getMethod(obj.getClass(), "run", iargs); 
     if (m != null) return new PortalVelMethodImpl(m, methodName); 

     return null; 
} 

public class PortalVelMethodImpl extends VelMethodImpl { 
    final Method method; 
    final String name; 

    public PortalVelMethodImpl(Method m, String methodName) { 
     super(m); 
     method = m; 
     name = methodName;    
    } 

    protected Object doInvoke(Object o, Object[] actual) throws Exception { 
     /* "run" method argumens are String and Object[] so we need to get plain Object[] array 
     * From [Arg0,[Arg1..ArgN] to [Arg0,Arg1..ArgN] 
     * */ 
     List<Object> args = new ArrayList<Object>(); 
     if(actual.length >= 1) { 
      args.add(actual[0]); 

      if(actual.length >= 2) { 
       Object[] nestedArgs = (Object[])actual[1]; 
       for(int i=1; i<nestedArgs.length; i++) args.add(nestedArgs[i]); 
      } 
     } 

     return method.invoke(o, name, args.toArray()); 
    } 

} 

}