java - 如何使用 FeignClient 发送字符串

Question

服务器使用request.getInputStream()获取请求正文。

客户端代码:

@FeignClient(name="composer-agent")
public interface ComposerClient {
    @RequestMapping(value = "/agent/import_bp", method = RequestMethod.POST)
    String importBlueprints(String payload);
}

但我遇到了一个异常(exception):

Caused by: feign.FeignException: status 500 reading ComposerClient#importBlueprints(String); content:
{"timestamp":"2017-10-19T06:15:47-0400","status":500,"error":"Internal Server Error","exception":"java.lang.IllegalArgumentException","message":"MIME type may not contain reserved characters"}
    at feign.FeignException.errorStatus(FeignException.java:62)
    at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:91)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:138)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76)
    at feign.hystrix.HystrixInvocationHandler$1.run(HystrixInvocationHandler.java:108)
    at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:301)
    at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:297)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46)
    ... 144 common frames omitted

我还尝试设置 consumes = MediaType.APPLICATION_JSON_VALUE 或其他值，或添加 @RequestBody，但我得到了相同的异常。

那么我该如何解决这个问题呢？谢谢。

Answer 1

这是一个known bug在 Feign 9.3.0 中，底层 HTTP 客户端是 Apache HTTP 客户端。解决方案是升级feign-httpclient依赖。例如:

compile "io.github.openfeign:feign-httpclient:9.5.0"