<dependency>            <groupId>cglib</groupId>            <artifactId>cglib</artifactId>            <version>3.2.4</version>        </dependency>        import java.io.Serializable;import java.lang.reflect.Method;import java.text.SimpleDateFormat;import java.util.Date;import net.sf.cglib.core.Signature;import net.sf.cglib.proxy.Enhancer;import net.sf.cglib.proxy.InterfaceMaker;import net.sf.cglib.proxy.MethodInterceptor;import net.sf.cglib.proxy.MethodProxy;import org.objectweb.asm.Type;public class CGLibExample {        @SuppressWarnings("rawtypes")    public static void main(String[] args) {                    // 定义一个参数是字符串类型的setCreatedAt方法          InterfaceMaker im = new InterfaceMaker();          im.add(new Signature("setCreatedAt", Type.VOID_TYPE,                   new Type[] { Type.getType(String.class) }), null);                    Class myInterface = im.create();            Enhancer enhancer = new Enhancer();          enhancer.setSuperclass(ExampleBean.class);          enhancer.setInterfaces(new Class[] { myInterface });          enhancer.setCallback(new MethodInterceptor() {              @Override            public Object intercept(Object obj, Method method, Object[] args,                    MethodProxy proxy) throws Throwable {                                ExampleBean bean = (ExampleBean) obj;                                    // 调用字符串类型的setCreatedAt方法时，转换成Date型后调用Setter                  if (method.getName().startsWith("setCreatedAt")                          && args[0] != null && args[0] instanceof String) {                        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");                      Date date = null;                      try {                          date = sdf.parse((String) args[0]);                      } catch (final Exception e) { /* nop */ }                      bean.setCreatedAt(date);                      return null;                    }                  return proxy.invokeSuper(obj, args);                          }          });            // 生成一个Bean          ExampleBean bean = (ExampleBean) enhancer.create();          bean.setId(999);            try {              Method method = bean.getClass().getMethod("setCreatedAt", new Class[] {String.class});              method.invoke(bean, new Object[]{"20160531"});          } catch (final Exception e) {              e.printStackTrace();          }                    System.out.printf("id : [%d] createdAt : [%s]\n", bean.getId(), bean.getCreatedAt());      }  }    class ExampleBean implements Serializable {      private static final long serialVersionUID = -8121418052209958014L;            private int id;      private Date createdAt;        public int getId() {          return id;      }        public void setId(int id) {          this.id = id;      }        public Date getCreatedAt() {          return createdAt;      }        public void setCreatedAt(Date createdAt) {          this.createdAt = createdAt;      }  }