Java中 springcloud.openfeign应用案例解析
作者：被程序耽误的胡先生
使用OpenFeign能让编写Web Service客户端更加简单,使用时只需定义服务接口,然后在上面添加注解,OpenFeign也支持可拔插式的编码和解码器,这篇文章主要介绍了Java中 springcloud.openfeign应用案例解析,需要的朋友可以参考下
OpenFeign是一个显示声明式的WebService客户端。使用OpenFeign能让编写Web Service客户端更加简单。使用时只需定义服务接口，然后在上面添加注解。OpenFeign也支持可拔插式的编码和解码器。spring cloud对feign进行了封装，使其支持MVC注解和HttpMessageConverts。和eureka（服务注册中心）和ribbon组合可以实现负载均衡。在Spring Cloud中使用OpenFeign，可以做到使用HTTP请求访问远程服务，就像调用本地方法一样的，开发者完全感知不到这是在调用远程方法，更感知不到在访问HTTP请求，非常的方便。
1 导入依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
<version>3.1.7</version>
</dependency>2 openfeign接口类编写
package com.sf.gis.taskmanage.event.feign;
import com.alibaba.fastjson.JSONObject;
import com.sf.gis.common.domain.dto.*;
import com.sf.gis.common.domain.vo.*;
import feign.Response;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
@FeignClient(contextId = "eventAllocationNewServiceFegin", name = "eventAllocationNewServiceFegin", url = "${newevent.prefixurl}")
public interface EventAllocationNewService {
/**
* 1. POST 获取工单号
* @param dto
* @param token
* @param type
* @return
*/
@PostMapping(value = "/order/cOrderNumberRule/getNum", consumes = "application/json", produces = "application/json")
EventCommonsVo workOrderNumber(@RequestBody WorkOrderNumberDto dto, @RequestHeader("Authorization") String token, @RequestHeader("content-type") String type);
/*
EventCommonVo<WorkOrderNumberVo> workOrderNumber(@RequestBody WorkOrderNumberDto dto, @RequestHeader("token") String token, @RequestHeader("content-type") String type);
*/
/**
* 2创建工单接口
* @param dto
* @param token
* @param type
* @return
*/
@PostMapping(value = "/order/cOrderNumberInfo/create", consumes = "application/json", produces = "application/json")
EventCommonsVo createWorkOrder(@RequestBody CreateWorkOrderDto dto, @RequestHeader("Authorization") String token, @RequestHeader("content-type") String type);
/**
* 3 工单流转
* @paramwanderAboutDto
* @param token
* @param type
* @return
*/
@PostMapping(value = "/order/cOrderCirculation/create", consumes = "application/json", produces = "application/json")
EventCommonsVo wanderAbout(@RequestBody ReReportingDto reReportingDto, @RequestHeader("Authorization") String token, @RequestHeader("content-type") String type);
/**
* 工单处置信息更新接口
* @param workOrderUpdateDto
* @param token
* @param type
* @return
*/
@PostMapping(value = "/order/cOrderNumberInfo/updateProcessInfo", consumes = "application/json", produces = "application/json")
EventCommonVo workOrderUpdate(@RequestBody WorkOrderUpdateDto workOrderUpdateDto, @RequestHeader("Authorization") String token, @RequestHeader("Content-Type") String type);
/**
* 工单处置信息更新接口
* @param
* @param token
* @param type
* @return
*/
@PostMapping("/order/cOrderNumberInfo/updateProcessInfo")
EventCommonVo workOrderCompleteUpdate(@RequestBody WorkOrderCompleteUpdateDto workOrderCompleteUpdateDto, @RequestHeader("Authorization") String token, @RequestHeader("content-type") String type);
/**
* 上传附件
*/
@RequestMapping(method = RequestMethod.POST,consumes = MediaType.MULTIPART_FORM_DATA_VALUE,value = "/minio/upload")
JSONObject upload(@RequestPart("file") MultipartFile file,@PathVariable("fileName") String fileName, @PathVariable("orderNum")String orderNum, @RequestHeader("Authorization") String token);
/**
* 附件下载
*/
@RequestMapping(method = RequestMethod.POST,consumes = MediaType.MULTIPART_FORM_DATA_VALUE,value = "/minio/download")
Response download(@PathVariable("filename") String filename, @PathVariable("orderNum") String orderNum, @RequestHeader("Authorization") String token);
/**
* 工单状态变更接口（对接到市里）
* @param
* @param token
* @param type
* @return
*/
@PostMapping(value = "/order/cOrderStatusChange/sendMsg", consumes = "application/json", produces = "application/json")
EventCommonVo orderStateUpdate(@RequestBody OrderChangeDto orderChangeDto, @RequestHeader("Authorization") String token, @RequestHeader("content-type") String type);
}3 URL 路径定义
url = "${newevent.prefixurl}")
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