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Kode sumber tersedia untuk pengujian

Gunakan NPOI toolkit .net untuk menghasilkan file excel ke disk lokal.

Dalam proyek sebenarnya, Anda dapat menentukan jalur ke server dan menyimpan file yang dihasilkan di direktori tertentu di server.

lapisan pengontrol

        [HttpPost("ExportExcel")]
        public void ExportExcel()
        {
            _TestService.ExportToExcel();
        }

lapisan layanan

        public void ExportToExcel() {
            String FileName = "D:\learning\yxl\chinese\2024年7月10日星期三.xlsx";
            var chineseWordList = this.WrapChineseWord();
            ExportExcelToDiskUtils<ChineseWord>.ExportToExcel(chineseWordList, FileName);
        }

Kelas alat NPOI

using Newtonsoft.Json;
using NPOI.HPSF;
using NPOI.SS.Formula.Functions;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System.Reflection;
 
namespace Learning.Dotnet
{
    public class ExportExcelToDiskUtils<T>
    {
 
        public static void ExportToExcel(List<T> list, String FileName)
        {
 
            var workbook = new XSSFWorkbook();
            var sheet = workbook.CreateSheet("Sheet1");
 
            IRow row1 = sheet.CreateRow(0);
 
            Type t = typeof(T);
            int cell = 0;
 
            var properties = t.GetProperties().Where(p => p.GetCustomAttribute<JsonPropertyAttribute>() != null).Select(p => p).ToList();
 
            foreach (var pro in properties)
            {
                row1.CreateCell(cell).SetCellValue(pro.GetCustomAttribute<JsonPropertyAttribute>().PropertyName);
                cell++;
            }
 
            int row = 1;
            foreach (var item in list)
            {
                cell = 0;
                IRow newRow = sheet.CreateRow(row);
                foreach (var pro in properties)
                {
                    var value = list[row - 1];
                    newRow.CreateCell(cell).SetCellValue(Convert.ToString(pro.GetValue(value, null)));
                    cell++;
                }
                row++;
            }
 
            // 导出到文件
            using (FileStream file = new FileStream(FileName, FileMode.Create, FileAccess.Write))
            {
                workbook.Write(file);
            }
 
            // 释放资源
            workbook.Close();
        }
    }
}

Model Objek Bisnis

using Newtonsoft.Json;
 
namespace Learning.Models.Chinese
{
    public class ChineseWord
    {
        [JsonProperty(PropertyName = "field1")]
        public string field1 { get; set; }
        [JsonProperty(PropertyName = "field2")]
        public string field2 { get; set; }
        [JsonProperty(PropertyName = "field3")]
        public string field3 { get; set; }
        [JsonProperty(PropertyName = "field4")]
        public string field4 { get; set; }
        [JsonProperty(PropertyName = "field5")]
        public string field5 { get; set; }
        [JsonProperty(PropertyName = "field6")]
        public string field6 { get; set; }
        [JsonProperty(PropertyName = "field7")]
        public string field7 { get; set; }
        [JsonProperty(PropertyName = "field8")]
        public string field8 { get; set; }
        [JsonProperty(PropertyName = "field9")]
        public string field9 { get; set; }
        [JsonProperty(PropertyName = "field10")]
        public string field10 { get; set; }
 
 
    }
}

Enkapsulasi data

Berikut adalah demonstrasi meniru data secara langsung. Dalam proyek sebenarnya, ganti saja dengan sumber data Anda sendiri.

        private List<ChineseWord> WrapChineseWord()
        {
            var chineseWord = new ChineseWord();
            chineseWord.field1 = "field1";
            chineseWord.field2 = "field2";
            chineseWord.field3 = "field3";
            chineseWord.field4 = "field4";
            chineseWord.field5 = "field5";
            chineseWord.field6 = "field6";
            chineseWord.field7 = "field7";
            chineseWord.field8 = "field8";
            chineseWord.field9 = "field9";
            chineseWord.field10 = "field10";
            var chineseWord2 = new ChineseWord();
            chineseWord2.field1 = "field1";
            chineseWord2.field2 = "field2";
            chineseWord2.field3 = "field3";
            chineseWord2.field4 = "field4";
            chineseWord2.field5 = "field5";
            chineseWord2.field6 = "field6";
            chineseWord2.field7 = "field7";
            chineseWord2.field8 = "field8";
            chineseWord2.field9 = "field9";
            chineseWord2.field10 = "field10";
            var chineseWordList = new List<ChineseWord>();
            chineseWordList.Add(chineseWord);
            chineseWordList.Add(chineseWord2);
            _Logger.LogInformation("chineseWordList:{}", JsonConvert.SerializeObject(chineseWordList));
            return chineseWordList;
        }