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spring boot 项目运行报错:

Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'xxService' is expected to be of type 'com.yangxd.application.service.xxService' but was actually of type 'com.sun.proxy.$Proxy48'

解决办法:启动类增加 @EnableAspectJAutoProxy(proxyTargetClass = true) 注解即可。
阅读以下源码很容易看出,如果目标类是接口或者代理类,使用 jdk 动态代理,否则使用 cglib 代理。
在 spring boot 启动类中添加 @EnableAspectJAutoProxy(proxyTargetClass = true),会激活 CglibAutoProxyConfiguration,启用 cglib 代理。

public class DefaultAopProxyFactory implements AopProxyFactory, Serializable {

	@Override
	public AopProxy createAopProxy(AdvisedSupport config) throws AopConfigException {
		if (config.isOptimize() || config.isProxyTargetClass() || hasNoUserSuppliedProxyInterfaces(config)) {
			Class<?> targetClass = config.getTargetClass();
			if (targetClass == null) {
				throw new AopConfigException("TargetSource cannot determine target class: " +
						"Either an interface or a target is required for proxy creation.");
			}
			if (targetClass.isInterface() || Proxy.isProxyClass(targetClass)) {
				return new JdkDynamicAopProxy(config);
			}
			return new ObjenesisCglibAopProxy(config);
		}
		else {
			return new JdkDynamicAopProxy(config);
		}
	}

	private boolean hasNoUserSuppliedProxyInterfaces(AdvisedSupport config) {
		Class<?>[] ifcs = config.getProxiedInterfaces();
		return (ifcs.length == 0 || (ifcs.length == 1 && SpringProxy.class.isAssignableFrom(ifcs[0])));
	}

}

本文标签: 报错expectedSpringboottype