禁用 PathVariables 的假编码

Question

我有以下 Feign 客户端：

public interface MyServiceClient {
    @RequestMapping(method = RequestMethod.GET, value = "/item/{itemKey}")
    Item getItem (@PathVariable("itemKey") String itemKey);
}

这些项目可以包含正在编码的特殊字符，例如 : 或 ::。

请求 URL 变成类似：

https://myservice.com/item/a%3Ab%3A%3Ac

而不是：

https://myservice.com/item/a:b::c

任何人都可以帮助我了解我们如何解决这个问题吗？

Answer 1

OpenFeign 有问题跟踪：

https://github.com/OpenFeign/feign/issues/1190

猜猜它会在完成后由 spring-cloud-feign 实施。同时，我针对此问题的解决方法是创建 RequestInterceptor 并将 %3A 替换为 :

public class MyRequestInterceptor implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate template) {
        template.uri(template.path().replaceAll("%3A", ":"));
    }
}

并使用此 requestInterceptor 在 feignConfig 中构建您的 feignClient:

@Bean
public Feign.Builder tcsClientBuilder() {
    return Feign.builder().requestInterceptor(new MyRequestInterceptor());
}

Answer 2

这对我来说很有效：

//ICustomFeignClient =  your Feign client interface
Feign.builder()
    .client(new OkHttpClient())
    .encoder(new GsonEncoder())
    .decoder(new GsonDecoder())
    .logger(new Slf4jLogger(builderClass))
    .logLevel(Logger.Level.FULL)
    .requestInterceptor(new CustomFeignRequestInterceptor())
    .target(ICustomFeignClient, baseUrl);
                
// custom interceptor class below 
class CustomFeignRequestInterceptor implements RequestInterceptor {
               
    @Override
    public void apply(RequestTemplate requestTemplate) {
    // you can replace the string you don't want from here
    requestTemplate.uri(
        requestTemplate.request()
            .url()
            .replaceAll("%3D", "=")
            .replaceAll("%26", "&")
        );
    }
}

禁用 PathVariables 的假编码

Disable feign encoding of PathVariables

java

encoding

spring

path-variables

spring-cloud-feign