Question

这是我的Feign界面

@FeignClient(
        name="mpi",
        url="${mpi.url}",
        configuration = FeignSimpleEncoderConfig.class
)
public interface MpiClient {

    @RequestMapping(method = RequestMethod.POST)
    public ResponseEntity<String> getPAReq(@QueryMap Map<String, String> queryMap
    );
}

和我的自定义配置

public class FeignSimpleEncoderConfig {
    public static final int FIVE_SECONDS = 5000;

    @Bean
    public Logger.Level feignLogger() {
        return Logger.Level.FULL;
    }

    @Bean
    public Request.Options options() {
        return new Request.Options(FIVE_SECONDS, FIVE_SECONDS);
    }

    @Bean 
    @Scope("prototype")
    public Feign.Builder feignBuilder() {
        return Feign.builder()
                .encoder(new FormEncoder());
    }
}

如果我发送这样的请求，我看到我的请求发送Content-Type：application / json; charset = UTF-8。但是，如果我设置内容类型

consumes = "application/x-www-form-urlencoded"

我发现此错误消息

feign.codec.EncodeException: Could not write request: no suitable HttpMessageConverter found for request type [java.util.HashMap] and content type [application/x-www-form-urlencoded]
    at org.springframework.cloud.netflix.feign.support.SpringEncoder.encode(SpringEncoder.java:108) ~[spring-cloud-netflix-core-1.1.7.RELEASE.jar:1.1.7.RELEASE]

如何发送POST请求，我想我应该用Encoder做更多的事情。谢谢你的帮助。

Answer 1

首先你要像这样改变Feign界面

@FeignClient(
                configuration = FeignSimpleEncoderConfig.class
)
public interface MpiClient {

   @RequestMapping(method = RequestMethod.POST)
   ResponseEntity<String> getPAReq(Map<String, ?> queryMap);
}

然后你应该在feign配置中设置编码器

public class FeignSimpleEncoderConfig {

    @Bean
    public Encoder encoder(){
        return new FormEncoder();
    }
}

Answer 2

在我看来，Map对于表单正文无效。 MultiValueMap工作正常。

Feign客户：

@FeignClient(name = "name", url="url", configuration = FromUrlEncodedClientConfiguration.class)
public interface PayPalFeignClient {

    @RequestMapping(value = "/", method = POST, consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
    @Headers("Content-Type: application/x-www-form-urlencoded")
    String foo(MultiValueMap<String, ?> formParams);
}

配置：

@Configuration
public class FromUrlEncodedClientConfiguration {

    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

    @Bean
    @Primary
    @Scope(SCOPE_PROTOTYPE)
    Encoder feignFormEncoder() {
        return new FormEncoder(new SpringEncoder(this.messageConverters));
    }
}

Gradle依赖项：

compile group: 'io.github.openfeign.form', name: 'feign-form', version: '2.0.2'
compile group: 'io.github.openfeign.form', name: 'feign-form-spring', version: '2.0.5'

之后，您只需使用MultivalueMap参数调用它。

Answer 3

为句柄表格编码请求指定正确的编码器

您可以指定多编码器示例json / xml / formhttpurl encoded

Promise.all([getUserData(UserId)]).then((response) => { 
  var data = response[0];
  var test = data.Item.streak;
  console.log("Promise is " + test);
});

重要FormHttpMessageConverter仅序列化MultiValueMap子类

如何通过Spring cloud Feign发送POST请求

3 个答案: