ÈçºÎʹÓÃProxyģʽ¼°JavaÄÚ½¨µÄ¶¯Ì¬´úÀí»úÖÆ

1.Proxy
ģʽ
´úÀíģʽ֧³Ö½«Ä³Ð©²Ù×÷´Óʵ¼ÊµÄ¶ÔÏóÖзÖÀë³öÀ´£¬Í¨¹ýËüµÄ´úÀíÀàÌṩ´¦Àí¡£ÕâÑù±ãÓÚÐ޸ĺ͹ÜÀíÕâЩÌض¨µÄ²Ù×÷¡£
ÏÂÃæʾÀýÒ»¸ö´úÀíģʽµÄʵÏÖ¡£
<<interface>>Subject.java
package
com.zj.proxy;
 
public

interface
Subject {
   
void
operation1();
   
   
void
operation2(String arg);
}
ÏÖʵÀà
RealSubject.java
package
com.zj.proxy;
 
public

class
RealSubject
implements
Subject {
 
   
public

void
operation1() {
      
System.
out
.println(
"Realer do operation1"
);
   
}
 
   
public

void
operation2(String arg) {
      
System.
out
.println(
"Realer do operation2 with "
+ arg);
   
}
}
´úÀíÀà
ProxySubject.java
package
com.zj.proxy;
 
public

class
ProxySubject
implements
Subject {
   
private
Subject
proxied
;
//
±»´úÀí¶ÔÏó
 
   
public
ProxySubject(Subject
proxied) {
      
this
.
proxied
= proxied;
   
}
 
   
public

void
operation1() {
      
System.
out
.println(
"Proxyer do operation1"
);
      
proxied
.operation1();
   
}
 
   
public

void
operation2(String arg) {
      
System.
out
.println(
"Proxyer do operation2 with "
+ arg);
      
proxied
.operation2(arg);
   
}
}
²âÊÔÀà
SimpleProxyDemo.java
package
com.zj.proxy.client;
 
import
com.zj.proxy.Subject;
import
com.zj.proxy.RealSubject;
import
com.zj.proxy.ProxySubject;
 
public

class
SimpleProx