java：FeignClient通过RequestInterceptor自动添加header

示例代码

【pom.xml】

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>2.3.12.RELEASE</version>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId><version>2.3.12.RELEASE</version>
</dependency>
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId><version>2.2.9.RELEASE</version>
</dependency>

【application.properties】

server.port=8080
spring.application.name=myFeignClientmanagement.server.port=7001
management.endpoints.web.exposure.include=*logging.level.root=info
logging.level.com.chz.myFeignClient=DEBUG

【FeignConfiguration.java】

package com.chz.myFeignClient.config;@Configuration
public class FeignConfiguration {@BeanLogger.Level feignLoggerLevel() {return Logger.Level.FULL;}
}

【TestController.java】

package com.chz.myFeignClient.controller;@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {@Autowiredprivate TestBaiduFeignClient testBaiduFeignClient;@GetMapping("/test")public String test() {return testBaiduFeignClient.testGet();}}

【TestBaiduFeignClient.java】

package com.chz.myFeignClient.feign;@FeignClient(name = "testBaiduFeignClient",contextId = "com.chz.myFeignClient.feign.TestFeignClient",url = "http://www.baidu.com"
)
public interface TestBaiduFeignClient
{@GetMapping(value = "/")String testGet();
}

【FeignRequestInterceptor.java】

package com.chz.myFeignClient.interceptor;@Configuration
public class FeignRequestInterceptor implements RequestInterceptor
{@Overridepublic void apply(RequestTemplate template){// 这里给每一个FeignClient的调用增加一个headertemplate.header("chz-new-header", "just-for-test");}
}

【MyFeignClientTest.java】

package com.chz.myFeignClient;@EnableFeignClients
@SpringBootApplication
public class MyFeignClientTest 
{public static void main(String[] args) {SpringApplication.run(MyFeignClientTest.class, args);}
}