.NET6+MiniExcel根据数据源横向导出头部标题
MiniExcel简单、高效避免OOM的.NET处理Excel查、写、填充数据工具。
特点:低内存耗用，避免OOM、频繁 Full GC 情况
支持即时操作每行数据
兼具搭配 LINQ 延迟查询特性，能办到低消耗、快速分页等复杂查询
轻量，不需要安装 Microsoft Office、COM+，DLL小于150KB
简便操作的 API 风格
github地址： MiniExcel
gitee地址： MiniExcel
本案例实现的功能是使用Miniexcel横向导出指标编码、指标名称，医院类型及指标对应的数据值，
要求导出效果如下所示：
- 第一列展示医院
- 头部两行动态展示指标编码、指标名称，下面展示每家医院所对应指标的值
- 安装NuGet程序包SqlSugarCore、MiniExcel、Furion
代码如下:
结合实际情况，可以适当改下
csharp
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MiniExcelLibs;
using MiniExcelLibs.Attributes;
using MiniExcelLibs.OpenXml;
using SqlSugar;
namespace DJPSMS.Application.Service
{
[AllowAnonymous]
public class MiniexcelTest : IDynamicApiController
{
private readonly ISqlSugarClient _db;
private readonly SqlSugarRepository<TDU_HOSPITALTEST> _tduHospitalRepository;
/// <summary>
/// 构造函数注入SqlSugar
/// </summary>
/// <param name="db"></param>
public MiniexcelTest(ISqlSugarClient db, SqlSugarRepository<TDU_HOSPITALTEST> tduHospitalRepository)
{
_db = db;
_tduHospitalRepository = tduHospitalRepository;
}
/// <summary>
/// Miniexcel导出
/// </summary>
/// <param name="Chapter">章节（案例中未使用）</param>
/// <returns></returns>
[HttpGet("DownLoadExcel")]
public void DownLoadExcel([FromQuery][Required] string Chapter = "1")
{
try
{
// 导出数据源总集合
var quotaAssemble = new List<Dictionary<string, object>>();
// 构建横向指标标题
var quotaPairy = new Dictionary<string, object>();
#region 构造excel模板及数据源
Log.Information($"构造excel横向指标标题开始--------");
// 使用SqlSugar查询数据库
// var quotaArray = _db.Queryable<DW_QUOTATEST>()
// .Where(x => x.Q_CODE.StartsWith(Chapter))
// .GroupBy(x => new { x.Q_CODE, x.Q_NAME })
// .OrderBy(x => x.Q_CODE)
// .Select(g => new { g.Q_CODE, g.Q_NAME })
// .ToList();
// 所有的指标类型
var quotaArray = new List<DW_QUOTATEST>()
{
new DW_QUOTATEST{ Q_ID = "1", Q_CODE = "1.01.01",Q_NAME ="指标1"},
new DW_QUOTATEST{ Q_ID = "2", Q_CODE = "1.01.02",Q_NAME ="指标2"},
new DW_QUOTATEST{ Q_ID = "3", Q_CODE = "1.01.03",Q_NAME ="指标3"},
new DW_QUOTATEST{ Q_ID = "4", Q_CODE = "1.01.04",Q_NAME ="指标4"},
new DW_QUOTATEST{ Q_ID = "5", Q_CODE = "1.01.05",Q_NAME ="指标5"},
new DW_QUOTATEST{ Q_ID = "6", Q_CODE = "1.01.06",Q_NAME ="指标6"},
new DW_QUOTATEST{ Q_ID = "7", Q_CODE = "1.01.07",Q_NAME ="指标7"},
new DW_QUOTATEST{ Q_ID = "8", Q_CODE = "1.01.08",Q_NAME ="指标8"},
new DW_QUOTATEST{ Q_ID = "9", Q_CODE = "1.01.09",Q_NAME ="指标9"},
new DW_QUOTATEST{ Q_ID = "10", Q_CODE = "1.01.10",Q_NAME ="指标10"},
new DW_QUOTATEST{ Q_ID = "11", Q_CODE = "1.01.11",Q_NAME ="指标11"},
new DW_QUOTATEST{ Q_ID = "12", Q_CODE = "1.01.12",Q_NAME ="指标12"},
new DW_QUOTATEST{ Q_ID = "13", Q_CODE = "1.01.13",Q_NAME ="指标13"}
};
// 設置列宽
var config = new OpenXmlConfiguration
{
DynamicColumns = CreateDynamicColumns(quotaArray.GroupBy(x => x.Q_CODE).Select(x => x.Key).ToList())
};
// 构建横向指标标题
quotaPairy["医院名称"] = "";
for (int i = 0; i < quotaArray.Count; i++)
{
if (quotaPairy.ContainsKey(quotaArray[i].Q_CODE)) continue;
var propertyCode = quotaArray[i].Q_CODE;
var propertyName = quotaArray[i].Q_NAME;
quotaPairy[propertyCode] = propertyName;
}
quotaAssemble.Add(quotaPairy);
Log.Information($"构造excel横向指标标题结束--------");
// 构建第一列医院类型
var hospitalList = new List<TDU_HOSPITALTEST>()
{
new TDU_HOSPITALTEST{ FJGDM ="1",FDESC ="测试医院1" },
new TDU_HOSPITALTEST{ FJGDM ="2",FDESC ="测试医院2" },
new TDU_HOSPITALTEST{ FJGDM ="3",FDESC ="南京第一" },
new TDU_HOSPITALTEST{ FJGDM ="3",FDESC ="测试医院4" },
new TDU_HOSPITALTEST{ FJGDM ="4",FDESC ="测试医院5" },
new TDU_HOSPITALTEST{ FJGDM ="5",FDESC ="测试医院6" },
new TDU_HOSPITALTEST{ FJGDM ="6",FDESC ="测试医院7" },
new TDU_HOSPITALTEST{ FJGDM ="7",FDESC ="测试医院8" },
new TDU_HOSPITALTEST{ FJGDM ="8",FDESC ="测试医院9" },
new TDU_HOSPITALTEST{ FJGDM ="9",FDESC ="测试医院10" },
new TDU_HOSPITALTEST{ FJGDM ="10",FDESC ="测试医院11" },
new TDU_HOSPITALTEST{ FJGDM ="11",FDESC ="测试医院12" },
};
//每家医院对应的指标的值
var quotaValuePairy = new Dictionary<string, object>();
// 总数据源，一般来说是从数据库联表中查询的数据，这边是声明的测试数据
List<HospitalViewCodeDetailTest> resultList = new List<HospitalViewCodeDetailTest>()
{
// 测试医院1的数据
new HospitalViewCodeDetailTest { Code = "1.01.01", CodeName = "指标1",HospitalCode ="1",HospitalName ="测试医院1" ,QValue = "11.8"},
new HospitalViewCodeDetailTest { Code = "1.01.02", CodeName = "指标2",HospitalCode ="1",HospitalName ="测试医院2" ,QValue = "12.8"},
// 测试医院2的数据
new HospitalViewCodeDetailTest { Code = "1.01.01", CodeName = "指标1",HospitalCode ="2",HospitalName ="测试医院1" ,QValue = "22.6"},
new HospitalViewCodeDetailTest { Code = "1.01.02", CodeName = "指标2",HospitalCode ="2",HospitalName ="测试医院1" ,QValue = "23.2"} ,
// 测试医院3的数据
new HospitalViewCodeDetailTest { Code = "1.01.01", CodeName = "指标1",HospitalCode ="3",HospitalName ="测试医院3" ,QValue = "65.8"} ,
new HospitalViewCodeDetailTest { Code = "1.01.02", CodeName = "指标2",HospitalCode ="3",HospitalName ="测试医院4" ,QValue = "25.1"}
};
// 填充对应的指标值
for (int i = 0; i < hospitalList.Count; i++)
{
quotaValuePairy = new Dictionary<string, object>(); // 在每次迭代中创建新的字典对象
var hospitalCodeDetails = resultList.Where(x => x.HospitalCode == hospitalList[i].FJGDM)
.Select(x => new
{
x.Code,
x.QValue
}).ToList();
quotaValuePairy["医院名称"] = hospitalList[i].FDESC;
for (int o = 0; o < quotaArray.Count; o++)
{
if (quotaValuePairy.ContainsKey(quotaArray[o].Q_CODE)) continue;
quotaValuePairy[quotaArray[o].Q_CODE] = hospitalCodeDetails.FirstOrDefault(x => x.Code == quotaArray[o].Q_CODE)?.QValue; //指标值
}
quotaAssemble.Add(quotaValuePairy);
}
#endregion
#region 导出excel
if (quotaAssemble.Count > 0)
{
Log.Information("正在导出......");
// 读取json文件中的自定义保存路径
// App.GetConfig官网介绍地址：http://furion.baiqian.ltd/docs/global/app?_highlight=getconfig#12-%E8%8E%B7%E5%8F%96%E9%85%8D%E7%BD%AE%E5%AF%B9%E8%B1%A1
//可以改成自己地址
string savePath = $"{App.GetConfig<string>("GenerateExcelOfHospitalFillingJobConfig:SavePath")}\\DownLoadExcel\\";
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
string filename = $"{DateTime.Now:yyyyMMddHHmmss}.xlsx";
var absoluteFilePath = Path.Combine(savePath, filename);
// 保存
MiniExcel.SaveAs(absoluteFilePath, quotaAssemble.ToArray(),
configuration: config);
Log.Information($"{filename}导出成功！");
}
#endregion
}
catch (Exception ex)
{
// 异常处理逻辑
Log.Error($"发生异常: {ex.Message}");
}
}
/// <summary>
/// 设置行宽
/// </summary>
/// <returns></returns>
private DynamicExcelColumn[] CreateDynamicColumns(List<string> dwQuota)
{
var dynamicColumns = new List<DynamicExcelColumn>
{
new DynamicExcelColumn("医院名称") { Index = 0, Width = 30 }
};
dynamicColumns.AddRange(dwQuota.Select((codeTitle, codeIndex) =>
{
if (string.IsNullOrEmpty(codeTitle))
{
// 处理空值的情况，例如使用默认列名或跳过该列
return null; // 返回 null 或者其他处理方式
}
else
{
return new DynamicExcelColumn(codeTitle) { Index = codeIndex + 1, Width = 25 };
}
}).Where(c => c != null).ToArray());
return dynamicColumns.ToArray();
}
}
/// <summary>
/// 指标实体
/// </summary>
public class DW_QUOTATEST
{
/// <summary>
/// 主键guid
/// </summary>
[SugarColumn(ColumnDescription = "主键id", Length = 32, IsPrimaryKey = true)]
public string Q_ID { get; set; }
/// <summary>
/// 编码
/// </summary>
public string Q_CODE { get; set; }
/// <summary>
/// 指标名称
/// </summary>
public string Q_NAME { get; set; }
}
/// <summary>
/// 医院实体
/// </summary>
public class TDU_HOSPITALTEST
{
public string FJGDM { get; set; }
public string FSEQ { get; set; }
public string FDESC { get; set; }
}
public class HospitalViewCodeDetailTest
{
/// <summary>
/// 医院编码
/// </summary>
public string HospitalCode { get; set; }
/// <summary>
/// 医院名称
/// </summary>
public string HospitalName { get; set; }
/// <summary>
/// 指标编码
/// </summary>
public string Code { get; set; }
/// <summary>
/// 指标名称
/// </summary>
public string CodeName { get; set; }
/// <summary>
/// QValue指标值
/// </summary>
public string QValue { get; set; }
}
}最后效果图如下所示：
写的不好，如有错误还请指正