abp 文件下载

发布时间 2023-10-18 09:04:43作者: Kelvin's

Service

public interface ITestFileService : IApplicationService
{
    public Task<string> getDownloadUrl();
}
public class TestFileService : XXXManagementAppService, ITestFileService
{
    public Task<string> getDownloadUrl()
    {
        string url = "D:/Desktop/忽略.txt";
        return Task.FromResult(url);
    }
}

Controller

下面这个返回值File必须要在Controller里面,另外,由于该Controller实现了接口ITestFileService,必须实现Service中的方法,虽然开放了接口,但是基本上不使用这个接口。
另外,使用下载文件接口时,不能给下载文件接口添加[WrapResult]统一接口返回形式,如果这个Controller中有其他接口需要使用WrapResult,则单独给他们加,而不是直接加载Controller头上。

[Route("file")]
    public class TestFileController:XXXManagementController, ITestFileService
    {

        private readonly ITestFileService testFileService;

        public TestFileController(ITestFileService testFileService)
        {
            this.testFileService = testFileService;
        }

        [HttpGet("getfile")]
        [SwaggerOperation(summary: "下载文件", Tags = new[] { "下载文件" })]
        public async Task<FileResult> DownLoad(string fileName)
        {
            string filePath = await testFileService.getDownloadUrl();
            var stream = System.IO.File.OpenRead(filePath);
            string fileExt = Path.GetExtension(filePath);
            //获取文件的ContentType
            var provider = new FileExtensionContentTypeProvider();
            var memi = provider.Mappings[fileExt];

            return File(stream, memi, Path.GetFileName(filePath));
        }

        [HttpGet("getfilePath")]
        public async Task<string> getDownloadUrl()
        {
            return await testFileService.getDownloadUrl();
        }
    }