Cglib代理

public class UserDaoimpl {

public void insert() {
	System.out.println("insert");

}

public void delete() {
	System.out.println("delete");

}

public void update() {

	System.out.println("update");
}

public void seach() {
	System.out.println("search");

}

}

---

public class Transaction {

public void begin() { System.out.println("begin"); }

public void commit() {
	System.out.println("commit");
}

}

---

public class DaoIntercepter implements MethodInterceptor {

private Object target;
private Transaction transaction;

public DaoIntercepter(Object target, Transaction transaction2) {
	this.target = target;
	this.transaction = transaction2;
}

/// 子代理對象
public Object createProxy() {
	Enhancer enhancer = new Enhancer();
	// 設置回調接口
	enhancer.setCallback(this);
	enhancer.setClassLoader(target.getClass().getClassLoader());
	enhancer.setInterfaces(target.getClass().getInterfaces());
	// 指定子代理的父類
	enhancer.setSuperclass(target.getClass());
	// 建立子代理對象
	return enhancer.create();
}

// 接口中的回調方法
public Object intercept(Object arg0, Method method, Object[] arg2, MethodProxy arg3) throws Throwable {

	String name = method.getName();
	if (name.equals("seach")) {
		method.invoke(target, arg2);

	} else {
		transaction.begin();
		method.invoke(target, arg2);
		transaction.commit();
	}
	return null;
}

}

public class CglibTest {

public void test() {
	UserDaoimpl userDaoimpl = new UserDaoimpl();
	Transaction transaction = new Transaction();
	DaoIntercepter daoIntercepter = new DaoIntercepter(userDaoimpl, transaction);
	UserDaoimpl userDaoimpl1 = (UserDaoimpl) daoIntercepter.createProxy();
	userDaoimpl1.insert();
}

}