NetCore HttpPatch EFCore 部分修改

参考博文 ：https://www.cnblogs.com/lwqlun/p/10433615.html

首先 安装Nuget包
Microsoft.AspNetCore.JsonPatch

有一个注意事项  必须使用 NewtonsoftJson 使用System.Text.Json 会出现422的模型错误

Service 层代码

        public async Task<IndustryTypeDto> PartUpdateAsync(int id, JsonPatchDocument<IndustryTypeForUpdate> target, UserInfo user, CancellationToken cancellationToken)
        {

            var tran = await BeginTransactionAsync(cancellationToken);
            try
            {
                var existingEntity = await Repository<IIndustryTypeRepository>().LoadEntityAsync(id, cancellationToken);


                var modifyEntity = ExpressMapper.Mapper.Map<IndustryType, IndustryTypeForUpdate>(existingEntity);

　　　　　　　　　 target.ApplyTo(modifyEntity);

                ExpressMapper.Mapper.Map(modifyEntity, existingEntity);

                await Repository<IIndustryTypeRepository>().UpdateAsync(existingEntity, cancellationToken);
                if (tran != null) { await tran.CommitAsync(cancellationToken); }
                return await Repository<IIndustryTypeRepository>().GetAsync(id, true, cancellationToken);
            }
            catch
            {
                if (tran != null) { await tran.RollbackAsync(cancellationToken); }

                throw;
            }
        }

Controller 代码

[HttpPatch("{id}")]
        public async Task<IActionResult> PartModify(int id, [FromBody] JsonPatchDocument<IndustryTypeForUpdate> modifyModel,CancellationToken cancellationToken)
        {
           var callResult=await  _service.PartUpdateAsync(id,modifyModel,Identity,cancellationToken);
            return Ok(callResult);
        }

效果图：

原有值

patch请求后效果图：