首先,feign服務之間的調用,傳參默認的格式爲:ContentType=application/x-www-form-urlencoded
以表單的形式傳參的,而文件流的傳參,需要form-data的ContentType,否則會報錯的
首先引入依賴:
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form</artifactId>
<version>3.8.0</version>
</dependency>
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form-spring</artifactId>
<version>3.8.0</version>
</dependency>
注意spring boot版本是2.x以上的,上面兩個依賴的版本不低於3.5.0,否則還是無效的
新建feign的配置:
package com.wm.blog_config.config;
import feign.codec.Encoder;
import feign.form.spring.SpringFormEncoder;
import org.springframework.beans.factory.ObjectFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.cloud.openfeign.support.SpringEncoder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @author :半卷流年
* @description : 解決feign傳遞流數據的異常
* @createTime :2020/6/14
*/
@Configuration
public class FeignSupportConfig {
@Autowired
private ObjectFactory<HttpMessageConverters> messageConverters;
@Bean
public Encoder feignFormEncoder() {
return new SpringFormEncoder(new SpringEncoder(messageConverters));
}
}
在feign接口中配置:
package com.wm.blog_admin.feign;
import com.wm.blog_admin.feign.factory.PictureClientFallbackFactory;
import com.wm.blog_common.constatnt.CommonConstant;
import com.wm.blog_common.domain.TFileDO;
import com.wm.blog_common.entity.TFile;
import com.wm.blog_common.req.TFileQuery;
import com.wm.blog_common.result.Result;
import com.wm.blog_config.config.CustomFeignConfig;
import com.wm.blog_config.config.FeignSupportConfig;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import java.util.List;
/***
* @ClassName: PictureFeignClient
* @Description: picture feign調用 todo feign使用get有坑啊,是否考慮使用HttpClient替換feign的HttpURLConnection,採用apache的HttpClient
* @Author: wm_yu
* @Create_time: 16:39 2020-3-26
*/
@FeignClient(value = CommonConstant.PICTURE_MODULE_NAME, configuration = {CustomFeignConfig.class, FeignSupportConfig.class}, fallbackFactory = PictureClientFallbackFactory.class)
public interface PictureFeignClient {
/**
* id查詢圖片信息
* @param id
* @return
*/
@GetMapping("/web/picture/{id}")
Result<TFileDO> get(@PathVariable("id") Long id);
/**
* id批量查詢圖片信息
* @param idList
* @return
*/
@PostMapping("/web/picture/getByIdList")
Result<List<TFile>> getByIdList(@RequestBody List<Long> idList);
/**
* 文件上傳
* @param file
* @return
*/
@PostMapping(value = "/web/picture/uploadFile",produces = {MediaType.APPLICATION_JSON_UTF8_VALUE},consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
Result<String> uploadFile(@RequestPart("file") MultipartFile file);
}
注意加上這個,表示傳參格式:
就可以傳參了的