日志导出功能

Controllers/LogController.cs

@@ -1,6 +1,7 @@
 using LY.App.Service;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
 
 namespace LY.App.Controllers
 {
@@ -30,5 +31,16 @@ namespace LY.App.Controllers
             var result = await _logService.List(pageNum, pageSize, key);
             return Ok(result);
         }
+        /// <summary>
+        /// 导出日志
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        [HttpGet("export")]
+        public async Task<IActionResult> Export(string key = null)
+        {
+            var result = await _logService.DownLog(key);
+            return File(result, "text/plain", $"{DateTime.Now.ToString("yyyy-MM-dd")}__logfile.txt");
+        }
     }
 }

Service/LogService.cs

@@ -2,8 +2,10 @@
 using LY.App.Extensions.DI;
 using LY.App.Model;
 using Mapster;
+using Microsoft.Extensions.Logging;
 using SqlSugar;
 using System.Security.AccessControl;
+using System.Text;
 
 namespace LY.App.Service
 {
@@ -43,5 +45,20 @@ namespace LY.App.Service
                 }
             };
         }
+        public async Task<byte[]> DownLog(string key)
+        {
+            var query = await _db.Queryable<LogEntity>()
+              .WhereIF(!string.IsNullOrEmpty(key), s => s.Message.Contains(key))
+              .OrderByDescending(s => s.CreateTime).ToListAsync();
+            // 构建文本内容
+            var sb = new StringBuilder();
+            foreach (var log in query)
+            {
+                sb.AppendLine($"时间：[{log.CreateTime}] -消息：[{log.Message}]-  参数： {log.Parameters}");
+            }
+            // 将文本内容转为字节数组
+            byte[] fileBytes = Encoding.UTF8.GetBytes(sb.ToString());
+            return fileBytes;
+        }
     }
 }