问题

.NET 6 action接收参数特性使用 FromBody swagger报错不知道为啥（swagger报错被后来中间件处理了并没有提示出来，一开始没想到，疯狂猜测原因）

//报错
 [HttpPost, Route("CapacityComplianceRate")] public async Task<IActionResult> CapacityComplianceRate([FromBody] ApiCommonInput input)//改成 FromBody swagger报错不知道为啥 {}
//没报错
 [HttpPost, Route("CapacityComplianceRate")]
 public async Task<IActionResult> CapacityComplianceRate([FromQuery] ApiCommonInput input)//改成  FromBody swagger报错不知道为啥
 {}

除了FromBody 还有FromHerder会其余的都不会 不写特性也不会

理论上只是接口能用，只是Swagger UI生成不了

原因

存在swagger处理不了的情况

本文的问题具体来说是接口参数的model在不同命名空间（引用）中存在同名，.Net可通过命名空间区别但是swagger区别不了

报错日志节选：

2023-03-28 17:23:43：Failed to generate Operation for action - QL.Board.Controllers.ProductionController.CapacityComplianceRate (QL.Board.WebApi). See inner exceptionCan’t use schemaId “$ApiCommonInput"fortype"$QL.Platform.Utility.Entity.ApiModels.Input.ApiCommonInput”. The same schemaId is already used for type “$QL.Board.Controllers.BizBoardListController+ApiCommonInput"Swashbuckle.AspNetCore.SwaggerGen.SwaggerGeneratorException:Failedtogenerateschemafortype-QL.Platform.Utility.Entity.ApiModels.Input.ApiCommonInput.Seeinnerexception--->System.InvalidOperationException:Ca{n}^{\prime }tuseschemaId"$ApiCommonInput” for type “$QL.Platform.Utility.Entity.ApiModels.Input.ApiCommonInput".ThesameschemaIdisalreadyusedfortype"$QL.Board.Controllers.BizBoardListController+ApiCommonInput”
at Swashbuckle.AspNetCore.SwaggerGen.SchemaRepository.RegisterType(Type type, String schemaId)
at Swashbuckle.AspNetCore.SwaggerGen.SchemaGenerator.GenerateReferencedSchema(DataContract dataContract, SchemaRepository schemaRepository, Func`1 definitionFactory)
at Swashbuckle.AspNetCore.SwaggerGen.SchemaGenerator.GenerateConcreteSchema(DataContract dataContract, SchemaRepository schemaRepository)

解决

更改其中一个同名model的命名,并处理对应的引用（挑引用少的改）

	//类1
    public class ApiUtilityCommonInput
    {
        /// <summary>
        /// 类型
        /// </summary>
        public int type { get; set; }
    }
    //类2
    public class ApiCommonInput
    {
        /// <summary>
        /// 类型
        /// </summary>
        public int type { get; set; }
        /// <summary>
        /// Id
        /// </summary>
        public Guid Id{ get; set; }
    }

   [HttpPost, Route("CapacityComplianceRate")]
    public async Task<IActionResult> CapacityComplianceRate([FromBody] ApiUtilityCommonInput input)
    {
    }

另一原因

存在同名路由

参考本人另一博文