feign get請(qǐng)求

feign 請(qǐng)求參數(shù)默認(rèn)是@RequestBody
如果是get請(qǐng)求要使用注解@RequestParam

Spring cloud feign 上傳 multipartFile 文件

服務(wù)端

@PostMapping()
  @ApiOperation(value = "文件上傳", httpMethod = "POST", notes = "文件上傳")
  fun uploadPlist( @RequestParam("file") uploadFile: MultipartFile): ResponseEntity<*> {
    try {
      return uploadService.upload(uploadFile).let { ResponseEntity.ok(it) }
    } catch (e: IOException) {
      logger.error(e.toString()
    }
  }

feign 消費(fèi)：
添加依賴：

compile 'io.github.openfeign.form:feign-form:3.0.3'
  compile 'io.github.openfeign.form:feign-form-spring:3.0.3'

@FeignClient(ClientConstant.FILE, configuration = [FileClient.MultipartSupportConfig::class])
interface FileClient {

  @PostMapping(value = ["/file"], consumes = [MediaType.MULTIPART_FORM_DATA_VALUE])
  fun upload(@RequestPart("file") uploadFile: MultipartFile): FileClientParam

//@Configuration   //加上@Configuration注解表示全局都接受這個(gè)配置
  class MultipartSupportConfig {

    @Bean
    fun multipartFormEncoder(): Encoder {
      return SpringFormEncoder()
    }

    @Bean
    fun multipartLoggerLevel(): feign.Logger.Level {
      return feign.Logger.Level.HEADERS
    }
  }
}

注意：
1.@FeignClient(ClientConstant.FILE, configuration = [FileClient.MultipartSupportConfig::class])
在FeignClient 注解中單獨(dú)添加配置類僅作用于當(dāng)前類，在配置類上加@configuration 會(huì)作用于整個(gè)項(xiàng)目，

2. @RequestPart("file") uploadFile: MultipartFile
   請(qǐng)求參數(shù)目前必須用 file做key,否則可能接收不到參數(shù)，直接報(bào)400
   feign調(diào)用坑很多，請(qǐng)謹(jǐn)慎使用....

file 轉(zhuǎn) multipartFile,使用multipartFile的實(shí)現(xiàn)類CommonsMultipartFile
依賴：

compile group: 'commons-fileupload', name: 'commons-fileupload', version: '1.2'

val xmlFile=File("/abc.txt)
val fileItem = DiskFileItemFactory().createItem("file",
        MediaType.TEXT_PLAIN_VALUE, true, xmlFile.name) as DiskFileItem
    try {
      FileInputStream(xmlFile).use { input -> fileItem.outputStream.use { os -> IOUtils.copy(input, os) } }
    } catch (e: Exception) {
      throw IllegalArgumentException("Invalid file: $e", e)
    }
    val multi = CommonsMultipartFile(fileItem)

項(xiàng)目地址：https://github.com/athc/angle-cloud/tree/master/angle-business/business-feign
參考鏈接：http://blog.didispace.com/spring-cloud-starter-dalston-2-4/