Java Code Examples for org.springframework.cglib.proxy.Enhancer#setCallback()

static public <T> T recorder(Object object, Class<T> as) {
    if (as.isInterface()) {
        // If it's just an interface, use standard java reflect proxying
        return as.cast(Proxy.newProxyInstance(as.getClassLoader(), new Class<?>[] { as }, new RecordingInvocationHandler(object)));
    }

    // If it's a class then use gclib to implement a subclass to implement proxying
    RecordingInvocationHandler ih = new RecordingInvocationHandler(object);
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(as);
    enhancer.setInterfaces(new Class<?>[]{RecordingProxy.class});
    enhancer.setCallback(new org.springframework.cglib.proxy.InvocationHandler() {
        @Override
        public Object invoke(Object o, Method method, Object[] objects) throws Throwable {
            return ih.invoke(o, method, objects);
        }
    });
    return as.cast(enhancer.create());
}
 

@SuppressWarnings("unchecked")
static <T> T wrapWithIfaceImplementation(final Class<T> iface, final Specification<Object> targetSpec) {
   	Enhancer enhancer = new Enhancer();
	enhancer.setInterfaces(new Class[] { iface });
	enhancer.setCallback(new MethodInterceptor() {
           @Override
           public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
           	if ("toString".equals(method.getName())) {
           		return iface.getSimpleName() + "[" + proxy.invoke(targetSpec, args) + "]";
           	}
           	return proxy.invoke(targetSpec, args);
           }
       });
	
	return (T) enhancer.create();
   }
 

/**
 * 读取 xml 信息为 java Bean
 *
 * @param doc   xml element
 * @param clazz bean Class
 * @param <T>   泛型
 * @return 对象
 */
@SuppressWarnings("unchecked")
public static <T> T readValue(final Element doc, final Class<T> clazz) {
	Enhancer enhancer = new Enhancer();
	enhancer.setSuperclass(clazz);
	enhancer.setUseCache(true);
	enhancer.setCallback(new CssQueryMethodInterceptor(clazz, doc));
	return (T) enhancer.create();
}
 

@SuppressWarnings("ALL")
public static <T> T getService(Class<T> dubboServiceClass, String group, String version, String host) {
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(dubboServiceClass);
    enhancer.setCallback((MethodInterceptor) (obj, method, args, proxy) -> {
        ReferenceConfig<GenericService> reference = getReferenceConfig(dubboServiceClass, group, version, host);
        GenericService genericService = reference.get();
        Object result = genericService.$invoke(method.getName(), getMethodParamType(method), args);
        String resJsonStr = OMUtils.objectMapper().writeValueAsString(result);
        return OMUtils.objectMapper().readValue(resJsonStr, method.getReturnType());
    });
    Object service = enhancer.create();
    return (T) service;
}
 

public Object getProxyInstance(){
    //1.工具类
    Enhancer en = new Enhancer();
    //2.设置父类
    en.setSuperclass(target.getClass());
    //3.设置回调函数
    en.setCallback(this);
    //4.创建子类(代理对象)
    return en.create();
}
 

@Bean
public CloseableHttpClient httpClientProxy() {
    Enhancer e = new Enhancer();
    e.setSuperclass(CloseableHttpClient.class);
    e.setCallback((MethodInterceptor) (o, method, objects, methodProxy) ->
        {
            if (method.getName().equals("execute") && objects.length > 0 && objects[0] instanceof HttpRequest) {
                serviceAuthenticationDecorator.process((HttpRequest) objects[0]);
            }
            return method.invoke(clientChooser.chooseClient(), objects);
        }
    );
    return (CloseableHttpClient) e.create();
}
 

@Override
@SuppressWarnings("unchecked")
public T create(Throwable cause) {
	final Class<T> targetType = target.type();
	final String targetName = target.name();
	Enhancer enhancer = new Enhancer();
	enhancer.setSuperclass(targetType);
	enhancer.setUseCache(true);
	enhancer.setCallback(new BladeFeignFallback<>(targetType, targetName, cause));
	return (T) enhancer.create();
}
 

private A createEnhancer(Callback cb) {
    Enhancer enhancer = new Enhancer();
    enhancer.setSuperclass(AImpl.class);

    enhancer.setCallback(cb);
    final A a = (A) enhancer.create();
    return a;
}
 

public Object getInstance() {
	Enhancer en = new Enhancer();
	en.setSuperclass(queryWrapper.getClass());
	en.setCallback(this);
	return en.create();
}