Java Error creating bean with name * defined in *：Unsatisfied dependency expressed through问题解决

超、凢脫俗 2023-09-28 13:57 88阅读 0赞

## 问题描述： ##

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dynamicProxy' defined in file \[D:\\idea\\xudongbase\\target\\classes\\com\\xudongbase\\common\\bytecode\\enhance\\proxy\\DynamicProxy.class\]: Unsatisfied dependency expressed through constructor parameter 0;

## 问题分析： ##

1、同时使用了@Component注解和@AllArgsContructor注解，但是没有加上@NoArgsConstructor注解，导致启动报错。

@AllArgsConstructor
    @Component
    public class DynamicProxy{
        private Object target;
    }

解决办法：加上@NoArgsConstructor注解即可。

@AllArgsConstructor
    @NoArgsConstructor
    @Component
    public class DynamicProxy{
        private Object target;
    }

2、使用@AllArgsContructor注解进行自动装配时，默认是以@Autowired注解装配的，但是其中有一个需要用org.apache.dubbo.config.annotation.@DubboReference注解装配，所以导致自动装配时报错。

解决办法：

去掉@AllArgsContructor注解，每个实例属性都添加装配注解。

实例属性对应的类为本系统定义的时，使用@Resource注解装配。

实例属性对应的类为Dubbo类时，使用org.apache.dubbo.config.annotation.@DubboReference注解装配。

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Java Error creating bean with name * defined in *：Unsatisfied dependency expressed through问题解决

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