feign中增加请求头

 

最近遇到项目在调用

实现RequestInterceptor 接口，然后可以根据feignClient中的值加到请求头中，使用时候在feignClient中配置，这样就可以把参数传入feign中

import com.alibaba.fastjson.JSONObject;
import com.google.common.collect.Lists;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.apache.commons.collections4.CollectionUtils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;


public class FeignConfiguration implements RequestInterceptor {


    @Override
    public void apply(RequestTemplate template) {

        List list = new ArrayList<>();
        if ("get".equalsIgnoreCase(template.method())){
            Map> queries = template.queries();
            list = (List) queries.get("key");

        } else if ("post".equalsIgnoreCase(template.method())){
            byte[] body = template.body();
            Map map = JSONObject.parseObject(body, Map.class);
            Object key = map.get("key");
            if (key != null){
                list.add(key.toString());
            }
        }
        if (CollectionUtils.isNotEmpty(list)) {
            template.header("head", list);
        }
    }

}





import com.hbasesoft.vcc.sgp.integral.goods.config.FeignConfiguration;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;


@FeignClient(name = "test", path = "/test", configuration = FeignConfiguration.class)
public interface ErpGoodsCouponsExternalClient {

    @GetMapping("/url")
    Object getData(@RequestParam("key") String key);
    
}