【feign】当@feignClient设置了path时，无法调用到服务

妖狐艹你老母 2023-01-01 01:57 162阅读 0赞

> `前言`

当feign api设置了path时，web端调用服务时会在前面添加这个path地址。  
把每个服务比作controller，它就类似于@RequestMapping

> `解决办法`

尝试按下面的方法解决，没成功  
参考文章：[https://segmentfault.com/q/1010000021551730/a-1020000021554252][https_segmentfault.com_q_1010000021551730_a-1020000021554252]  
我这边sb版本是2.2.7，在上面添加@RequestMapping注解报错，解决办法：  
[https://blog.csdn.net/weixin\_42073629/article/details/107172107][https_blog.csdn.net_weixin_42073629_article_details_107172107]

@Configuration
    @ConditionalOnClass({ Feign.class})
    public class FeignConfig { 
        @Bean
        public WebMvcRegistrations feignWebRegistrations() { 
            return new WebMvcRegistrations() { 
                @Override
                public RequestMappingHandlerMapping getRequestMappingHandlerMapping() { 
                    return new FeignRequestMappingHandlerMapping();
                }
            };
        }
    
        private static class FeignRequestMappingHandlerMapping extends RequestMappingHandlerMapping { 
            @Override
            protected boolean isHandler(Class<?> beanType) { 
                return super.isHandler(beanType) &&
                        !AnnotatedElementUtils.hasAnnotation(beanType, FeignClient.class);
            }
        }
    }

之所以把`WebMvcRegistrationsAdapter`换成了`WebMvcRegistrations`，原因：[https://blog.csdn.net/weixin\_34387284/article/details/93399783][https_blog.csdn.net_weixin_34387284_article_details_93399783]

没有成功：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3MxNDQxMTAxMjY1_size_16_color_FFFFFF_t_70]  
第二次尝试  
按这篇文档：[https://www.cnblogs.com/LiangPF/p/10388080.html][https_www.cnblogs.com_LiangPF_p_10388080.html]  
它这个不推荐使用…其实就是在每一个地址前面分别都加一个  
第三次  
这是服务端  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3MxNDQxMTAxMjY1_size_16_color_FFFFFF_t_70 1]  
这是gateway  
这里添加了filters 参数，意思是过滤地址前面两位。  
![在这里插入图片描述][20210105162226303.png]

待补充

[https_segmentfault.com_q_1010000021551730_a-1020000021554252]: https://segmentfault.com/q/1010000021551730/a-1020000021554252
[https_blog.csdn.net_weixin_42073629_article_details_107172107]: https://blog.csdn.net/weixin_42073629/article/details/107172107
[https_blog.csdn.net_weixin_34387284_article_details_93399783]: https://blog.csdn.net/weixin_34387284/article/details/93399783
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3MxNDQxMTAxMjY1_size_16_color_FFFFFF_t_70]: /images/20221120/d980294c1d6740b991542a0b429731a3.png
[https_www.cnblogs.com_LiangPF_p_10388080.html]: https://www.cnblogs.com/LiangPF/p/10388080.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3MxNDQxMTAxMjY1_size_16_color_FFFFFF_t_70 1]: /images/20221120/15d06b2788bd4d12aef6b2edbca1f2c0.png
[20210105162226303.png]: /images/20221120/3832396d663041d5afce541c973ba7d8.png