如何使用Spring Cloud Faign发布表单url编码数据

Question

使用sping-mvc注释：

• 我如何定义一个@FeignClient，它可以发布表单url编码




Answer 1

对于POST中的url表单编码数据，必须在外文编码器中使用FormEncoder。

包括对应用程序的依赖关系：

梅文：

<dependency>
  <groupId>io.github.openfeign.form</groupId>
  <artifactId>feign-form</artifactId>
  <version>3.8.0</version>
</dependency>

将FormEncoder添加到你的伪装中。像这样的建筑商：

SomeFeign sample  = Feign.builder()
                      .encoder(new FormEncoder(new JacksonEncoder()))
                      .target(SomeFeign.class, "http://sample.test.org");

在虚拟界面中

@RequestLine("POST /submit/form")
@Headers("Content-Type: application/x-www-form-urlencoded")
void from (@Param("field1") String field1, @Param("field2") String field2);

参考更多信息：https://github.com/OpenFeign/feign-form

Answer 2

完整的Java代码和简化版的kazuar解决方案，适用于Spring Boot：

import java.util.Map;
import feign.codec.Encoder;
import feign.form.spring.SpringFormEncoder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.cloud.openfeign.support.SpringEncoder;
import org.springframework.context.annotation.Bean;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import static org.springframework.http.MediaType.APPLICATION_FORM_URLENCODED_VALUE;

@FeignClient(name = "srv", url = "http://s.com")
public interface Client {

    @PostMapping(value = "/form", consumes = APPLICATION_FORM_URLENCODED_VALUE)
    void login(@RequestBody Map<String, ?> form);

    class Configuration {
        @Bean
        Encoder feignFormEncoder(ObjectFactory<HttpMessageConverters> converters) {
            return new SpringFormEncoder(new SpringEncoder(converters));
        }
    }
}

依赖：

<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

Answer 3

使用FormEncoder进行伪装：

• https://github.com/OpenFeign/feign-form

你的假象可以是这样的：

class CoreFeignConfiguration {
  @Autowired
  private ObjectFactory<HttpMessageConverters> messageConverters

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

然后，客户机可以这样映射：

@FeignClient(name = 'client', url = 'localhost:9080', path ='/rest',
    configuration = CoreFeignConfiguration)
interface CoreClient {
    @RequestMapping(value = '/business', method = POST, 
                 consumes = MediaType.APPLICATION_FORM_URLENCODED)
    @Headers('Content-Type: application/x-www-form-urlencoded')
    void activate(Map<String, ?> formParams)
}