feign map 入参加不加@RequestBody 区别

好的，我理解了。对于您的问题，如果Feign声明式接口远程调用的入参是一个Map类型，不加注解@RequestBody，请求参数会以application/x-www-form-urlencoded方式传递，键值对会以&分隔。如果加上注解@RequestBody，请求参数会以application/json方式传递。加上@RequestBody注解后，请求的参数类型必须为application/json，这样就可以通过请求体（Body）以Json格式传递参数。

相关问题

feign传递map

在使用Feign进行请求时，如果需要传递Map参数，可以通过以下方式解决。首先，在Feign的配置类中注入SpringFormEncoder来支持Map传参时的表单参数编码。具体代码如下：

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

然后，在Feign接口的方法上添加`consumes="application/x-www-form-urlencoded"`注解，并将参数声明为`@RequestBody Map<String, ?>`。示例代码如下：

@PostMapping(value = "/feign/sayHelloWithMap", consumes = "application/x-www-form-urlencoded")
String sayHelloWithMap(@RequestBody Map<String, ?> map);

这样就可以通过Feign传递Map参数了。\[1\]
#### 引用[.reference_title]
- *1* [springcloud openfeign通过map传递form表单参数](https://blog.csdn.net/LeoHan163/article/details/127269671)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [.form文件_Feign完美解决服务之间传递文件、传递list，map、对象等情况](https://blog.csdn.net/weixin_39982537/article/details/110252979)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [springcloud feign 传递map 对象 多媒体文件](https://blog.csdn.net/sswltt/article/details/80415284)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]

根据代码1“@FeignClient(name = "UserUgsApi", url = "${newbim.login-domain}") public interface IApplicationServicePlatformClient {@PostMapping("/ums/v1/feign/omp/project/search") ResultWrapper<QueryAllProject> listUserProject(@RequestHeader("BSP_TOKEN") String bspToken, @RequestHeader("BSP_USER_ID") String bspUserId, @RequestHeader("BSP_USER_ENV_ID") String bspUserEnvId, @RequestHeader("BSP_USER_TENANT") String bspUserTenant, @RequestBody ProjectCondition queryProjectDto);” ，修改并优化下面代码：public List<ProjectCountVO> projectCount(String beginTime, String endTime, Integer forceType, String projectId) { List<TaskTask> taskTaskList = this.listStatisticsTask(beginTime, endTime, forceType, projectId); if(CollectionUtil.isEmpty(taskTaskList)){ return Collections.emptyList(); } List<ProjectCountVO> result = new ArrayList<>(); Map<String, List<TaskTask>> projectTaskMap = taskTaskList.stream().collect(Collectors.groupingBy(TaskTask::getProjectId)); for (Map.Entry<String, List<TaskTask>> projectTaskEntry : projectTaskMap.entrySet()) { projectId = projectTaskEntry.getKey(); ProjectCountVO projectCountVO = new ProjectCountVO(); projectCountVO.setId(projectId); //查询项目名称String projectName = Optional.ofNullable(projectTaskMap.get(projectId)).map(taskList -> taskList.get(0).getName()).orElse(""); projectCountVO.setName(projectName); List<TaskTask> taskList = projectTaskEntry.getValue(); projectCountVO.setTaskCount(taskList.size()); Integer problemCount = CollectionUtil.isEmpty(taskList) ? 0 : taskList.stream().collect(Collectors.summingInt(task-> Optional.ofNullable(task.getProblemNum()).orElse(0))); projectCountVO.setProblemCount(problemCount); result.add(projectCountVO); } return result; }

根据代码1，我们可以发现该代码是通过 FeignClient 调用 UserUgsApi 的接口，获取项目列表信息。在此基础上，我们可以优化代码如下：

1. 将 FeignClient 接口的定义进行封装，以便于后续维护和调用。

public interface UserUgsApiFeignClient {
    @PostMapping("/ums/v1/feign/omp/project/search")
    ResultWrapper<QueryAllProject> listUserProject(@RequestHeader("BSP_TOKEN") String bspToken,
                                                   @RequestHeader("BSP_USER_ID") String bspUserId,
                                                   @RequestHeader("BSP_USER_ENV_ID") String bspUserEnvId,
                                                   @RequestHeader("BSP_USER_TENANT") String bspUserTenant,
                                                   @RequestBody ProjectCondition queryProjectDto);
}

2. 将查询任务列表的代码进行封装，以便于后续的复用和维护。

private List<TaskTask> listStatisticsTask(String beginTime, String endTime, Integer forceType, String projectId) {
    // 省略具体实现
}

3. 将代码中的变量名进行修改，以便于提高代码的可读性和可维护性。

public List<ProjectCountVO> projectCount(String beginTime, String endTime, Integer forceType, String projectId) {
    List<TaskTask> taskList = this.listStatisticsTask(beginTime, endTime, forceType, projectId);
    if(CollectionUtil.isEmpty(taskList)){
        return Collections.emptyList();
    }
    List<ProjectCountVO> result = new ArrayList<>();
    Map<String, List<TaskTask>> projectTaskMap = taskList.stream().collect(Collectors.groupingBy(TaskTask::getProjectId));
    for (Map.Entry<String, List<TaskTask>> projectTaskEntry : projectTaskMap.entrySet()) {
        String currentProjectId = projectTaskEntry.getKey();
        ProjectCountVO projectCountVO = new ProjectCountVO();
        projectCountVO.setId(currentProjectId);
        //查询项目名称
        String projectName = Optional.ofNullable(projectTaskMap.get(currentProjectId)).map(taskList -> taskList.get(0).getName()).orElse("");
        projectCountVO.setName(projectName);
        List<TaskTask> currentTaskList = projectTaskEntry.getValue();
        projectCountVO.setTaskCount(currentTaskList.size());
        Integer problemCount = CollectionUtil.isEmpty(currentTaskList) ? 0 : currentTaskList.stream().collect(Collectors.summingInt(task-> Optional.ofNullable(task.getProblemNum()).orElse(0)));
        projectCountVO.setProblemCount(problemCount);
        result.add(projectCountVO);
    }
    return result;
}