91 lines
2.9 KiB
C#
91 lines
2.9 KiB
C#
using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Configuration;
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using COSXML;
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using COSXML.Auth;
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using COSXML.Model.Tag;
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namespace ZR.Admin.WebApi.Controllers.Business
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{
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/// <summary>
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/// COS 预签名上传
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/// </summary>
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[Route("business/CosUpload")]
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public class CosUploadController : BaseController
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{
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private readonly IConfiguration _config;
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public CosUploadController(IConfiguration config)
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{
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_config = config;
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}
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/// <summary>
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/// 获取 COS PUT 预签名 URL（前端直传）
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/// </summary>
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[HttpPost("presignUrl")]
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public IActionResult GetPresignUrl([FromBody] CosPresignRequestDto dto)
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{
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var section = _config.GetSection("TencentCos");
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var appId = section["AppId"];
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var bucket = section["Bucket"];
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var region = section["Region"];
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var secretId = section["SecretId"];
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var secretKey = section["SecretKey"];
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var domainUrl = section["DomainUrl"];
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var expireMinutes = int.Parse(section["PresignExpireMinutes"] ?? "10");
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int count = Math.Clamp(dto.Count, 1, 9);
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string ext = string.IsNullOrWhiteSpace(dto.Ext) ? ".jpg" : dto.Ext;
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var cosConfig = new CosXmlConfig.Builder()
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.SetRegion(region)
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.Build();
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var credentialProvider = new DefaultQCloudCredentialProvider(
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secretId, secretKey, (long)expireMinutes * 60);
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var cosXml = new CosXmlServer(cosConfig, credentialProvider);
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var results = new List<object>();
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var dateDir = DateTime.Now.ToString("yyyyMMdd");
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for (int i = 0; i < count; i++)
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{
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var cosKey = $"fault-images/{dateDir}/{Guid.NewGuid():N}{ext}";
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var preSignatureStruct = new PreSignatureStruct
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{
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appid = appId,
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bucket = bucket,
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region = region,
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key = cosKey,
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httpMethod = "PUT",
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isHttps = true,
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signDurationSecond = expireMinutes * 60,
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headers = null,
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queryParameters = null
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};
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var presignUrl = cosXml.GenerateSignURL(preSignatureStruct);
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var accessUrl = $"{domainUrl.TrimEnd('/')}/{cosKey}";
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results.Add(new { cosKey, presignUrl, accessUrl });
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}
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return SUCCESS(results);
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}
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}
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public class CosPresignRequestDto
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{
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/// <summary>
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/// 需要上传的文件数量
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/// </summary>
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public int Count { get; set; } = 1;
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/// <summary>
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/// 文件扩展名，如 .jpg
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/// </summary>
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public string Ext { get; set; } = ".jpg";
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}
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}
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