Dynamic proxy cglib instance

1. Delegate class;

Package dynamic proxy 2; // This class needs to be enhanced public class userservice {public void create () {system. out. println ("create user");} public void Update () {system. out. println ("update user ");}}

2. proxy class implementation

1 package dynamic proxy 2; 2 3 Import Java. lang. reflect. method; 4 5 import net. SF. cglib. proxy. enhancer; 6 Import net. SF. cglib. proxy. methodinterceptor; 7 Import net. SF. cglib. proxy. methodproxy; 8 9 public class proxycglib implements methodinterceptor {10 // determine whether the operation permission is granted based on the input name. 11 private enhancer = new enhancer (); 12 13 private string name = NULL; 14 15 public proxycglib (string name) 16 {17 this. name = Name; 18 19} 20 // obtain the proxy class object. The input parameter is the delegate Class 21 public object getproxy (class clazz) {22 // set the Class 23 enhancer to create the subclass. setsuperclass (clazz); 24 enhancer. setcallback (this); 25 // use bytecode technology to dynamically create a subclass instance 26 return enhancer. create (); 27} 28 29 30 31 public object intercept (Object arg0, method arg1, object [] arg2, 32 methodproxy arg3) throws throwable {33 // todo auto-generated method stub34 35 if (! Name. equals ("Han") 36 {37 system. out. println (""); 38} 39 else40 {41 arg3.invokesuper (arg0, arg2); 42 43} 44 45 return NULL; 46} 47 48 49}

3. Client: Test

Package dynamic proxy 2; // Ref: The http://songbo-mail-126-com.iteye.com/blog/968792public class test {public static void main (string [] ARGs) {// todo auto-generated method stub // create a proxy object for user Zhang San/* proxycglib proxy = new proxycglib ("Zhang San"); userservice user = (userservice) proxy. getproxy (userservice. class); User. create (); */proxycglib proxy2 = new proxycglib ("Han"); userservice user2 = (userservice) proxy2.getproxy (userservice. class); user2.create ();}}

 

Dynamic proxy cglib instance