问题记录-FeigonClient与HandlerInterceptorAdapter循环依赖-FeigonClient时间字段解析错误

（昨天天气晴朗，小区的路上暖洋洋的，路中央还趴着一只橘白猫，我凑近了点，它一点都不认生，甚至在地上打滚，露出肚皮，

这一定是一只宠物猫，可能跑丢了。我犹豫了下要不要蹲下摸摸它，它又翻过身来，舔了舔前爪，冲我喵喵叫了几声。我再细细看它，

体态健硕，毛发光泽很好，很健康，我想拿点什么喂喂它，可是家里好像什么吃的都没有，又站了几分钟，我无奈走开了，希望下一个路过的邻居会收养它吧）

 

最近遇到两个问题记录下：

一.FeigonClient与HandlerInterceptorAdapter循环依赖

 遇到实际问题：

自己的类继承了HandlerInterceptorAdapter 类（A），过滤解析登录信息的，同时成员变量包含了FeigonClient接口类（B）获取登录信息，

B 初始化依赖 A（ HandlerInterceptorAdapter ），同时A类依赖成员变量B类 ，循环依赖启动失败

网上查了不少方式，尝试了只有一种成功，记录下。

错误信息：

 Error creating bean with name 'autoWOrderBusiness': Unsatisfied dependency expressed through field 'webAppApiRouteBusiness'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webAppApiRouteBusiness': Unsatisfied dependency expressed through field 'routePCFegionService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routePCFegionService': Unsatisfied dependency expressed through field 'routePCFegionClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.t3.ts.cc.webapp.api.feign.autoworder.RouteFeignClient': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration': Unsatisfied dependency expressed through method 'setConfigurers' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webMvcConfiguration': Unsatisfied dependency expressed through field 'cuaCustomerFeignClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.t3.ts.cc.webapp.api.feign.CuaCustomerFeignClient':FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mvcResourceUrlProvider': Requested bean is currently in creation: Is there an unresolvable circular reference?

 

 

Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'mvcResourceUrlProvider': Requested bean is currently in creation: Is there an unresolvable circular reference?
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.beforeSingletonCreation(DefaultSingletonBeanRegistry.java:339)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:215)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.context.event.AbstractApplicationEventMulticaster.retrieveApplicationListeners(AbstractApplicationEventMulticaster.java:239)
at org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:196)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:133)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:398)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:355)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:882)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.cloud.context.named.NamedContextFactory.createContext(NamedContextFactory.java:136)
at org.springframework.cloud.context.named.NamedContextFactory.getContext(NamedContextFactory.java:101)
at org.springframework.cloud.context.named.NamedContextFactory.getInstance(NamedContextFactory.java:145)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.get(FeignClientFactoryBean.java:220)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.feign(FeignClientFactoryBean.java:84)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:257)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:247)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:171)

 

 

解决方式：

FegionClient不作为成员变量被使用，需要使用时 动态获取bean

@Component
public class SpringUtils implements ApplicationContextAware {

    /**
     * ddd
     */
private static ApplicationContext applicationContext;

/**
     * sss
     * @param applicationContext app
     * @throws BeansException b
     */
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringUtils.applicationContext = applicationContext;
}

    /**
     * sss
     * @param beanName b
     * @param <T> t
     * @return res
     */
public static <T> T getBean(String beanName) {
        if (applicationContext.containsBean(beanName)) {
            return (T) applicationContext.getBean(beanName);
} else {
            return null;
}
    }

    /**
     * dd
     * @param baseType b
     * @param <T> t
     * @return res
     */
public static <T> Map<String, T> getBeansOfType(Class<T> baseType) {
        return applicationContext.getBeansOfType(baseType);
}

}

CuaCustomerFeignClient cuaCustomerFeignClient = SpringUtils.getBean("cuaCustomerFeignClient");



FegionClient 里的注解方式，用 qualifier = "cuaCustomerFeignClient" 和通过名字获取bean的 getBean 方法呼应 ：

@FeignClient(name = "cua-customer-api", url = "${cuaCustomerUrl}", qualifier = "cuaCustomerFeignClient")
public interface CuaCustomerFeignClient {

 

 应该还可以深究一下：

 

 

二.FeigonClient时间字段解析错误

时间格式为”2019-06-21T10:09:06.000+0000“ 时在FegonClient和其他http客户端直接用 Date类接受数据会抛出异常，用String类可以，但是后续也需要转

或者用 T = fegionClient.getXX()

A = JSONObject.parseObject（JSONObject.toJSONString(T)，A.class)

的方式  alibaba的json工具可以解析。

具体待研究原因。