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asp.net简单实现导出excel报表

关于导出excel报表,网上也是一搜一大把。整理一下,无非就是几种思路,有利用安装excel软件或插件的服务器直接生成,或者直接在客户端生成(通常都是利用excel软件或插件直接在浏览器生成)。反正万变不离其宗,离开excel插件,这个活你还真的干不了,由此你可以看到软件公司尤其是微软的强大。下面贴一个比较简单的导出excel报表的方法。在安装了office2003的机器上,通过ie浏览器可以成功生成excel,而且一直有人在使用。如果你在测试的时候发现这个根本无法使用,请注意,这个很可能和你的机器配置有关,别怀疑代码的正确性。下面就一个利用iBatis开发的例子来简单说明一下。

1、实体类 

Copy to ClipboardLiehuo.Net Codes引用的内容:[www.veryhuo.com]
using System;
using System.Collections.Generic;
using System.Text;

#region Apache Notice
/*****************************************************************************
* $Header: $
* $Revision: 383115 $
* $Date: 2006-04-15 13:21:51 +0800 (星期六, 04 三月 2006) $
*
* IBatisNetDemo
* Copyright (C) 2006 - Shanyou Zhang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
********************************************************************************/
#endregion
namespace IBatisNetDemo.Domain
{
[Serializable]
public class Person
{
private int id;
private string firstName;
private string lastName;
private DateTime? birthDate;
private double? weightInKilograms;
private double? heightInMeters;

public Person() { }

public int Id
{
get { return id; }
set { id = value; }
}

public string FirstName
{
get { return firstName; }
set { firstName = value; }
}

public string LastName
{
get { return lastName; }
set { lastName = value; }
}

public DateTime? BirthDate
{
get { return birthDate; }
set { birthDate = value; }
}

public double? WeightInKilograms
{
get { return weightInKilograms; }
set { weightInKilograms = value; }
}

public double? HeightInMeters
{
get { return heightInMeters; }
set { heightInMeters = value; }
}
}
}

2、导出excel报表主程序方法

Copy to ClipboardLiehuo.Net Codes引用的内容:[www.veryhuo.com]
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Reflection;

namespace DotNet.Common.Util
{
/// <summary>
/// 导出excel 简单实现
/// </summary>
public static class ExcelUtil
{
private static Page currentPage = HttpContext.Current.Handler as Page;
private static Object sycObj = new Object();
private static int incremental = 10;
/// <summary>
/// 按照时间生成excel名称 防止生成相同名的excel造成文件覆盖
/// </summary>
/// <returns></returns>
private static string CreateExcelName()
{
lock (sycObj)
{
incremental = incremental + 1;
if (incremental > 99)
incremental = 10;
return Convert.ToInt64(DateTime.Now.ToString("yyyyMMddHHmmssfff") + incremental).ToString();
}
}

/// <summary>
/// 导出excel
/// </summary>
/// <typeparam name="T">泛型实体</typeparam>
/// <param name="response"></param>
/// <param name="listColumes">要显示的列名</param>
/// <param name="listProperty">要显示的导出属性名 和实体的属性名有关,顺序由显示的列确定 可以同listColumes</param>
/// <param name="listModel">实体集合</param>
public static void ExportExcel<T>(HttpResponse response, IList<string> listColumns, IList<string> listProperty, IList<T> listModel) where T : class, new()
{
if (listColumns.Count == 0)
{
throw new IndexOutOfRangeException("No Columnes!");
}
if (listColumns.Count != listProperty.Count)
{
throw new ArgumentException("Columns and properties length are not equal.");
}
string sheetName = "sheetName";
using (StringWriter writer = new StringWriter())
{
writer.WriteLine("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
writer.WriteLine("<head>");
writer.WriteLine("<!--[if gte mso 9]>");
writer.WriteLine("<xml>");
writer.WriteLine(" <x:ExcelWorkbook>");
writer.WriteLine(" <x:ExcelWorksheets>");
writer.WriteLine(" <x:ExcelWorksheet>");
writer.WriteLine(" <x:Name>" + sheetName + "</x:Name>");
writer.WriteLine(" <x:WorksheetOptions>");
writer.WriteLine(" <x:Print>");
writer.WriteLine(" <x:ValidPrinterInfo />");
writer.WriteLine(" </x:Print>");
writer.WriteLine(" </x:WorksheetOptions>");
writer.WriteLine(" </x:ExcelWorksheet>");
writer.WriteLine(" </x:ExcelWorksheets>");
writer.WriteLine("</x:ExcelWorkbook>");
writer.WriteLine("</xml>");
writer.WriteLine("<![endif]-->");
writer.WriteLine("</head>");
writer.WriteLine("<body>");
writer.WriteLine("<table>");
writer.WriteLine("<tr>");
foreach (string item in listColumns)
{
writer.WriteLine("<td>" + item + "</td>"); //列名
}
writer.WriteLine("</tr>");
//通过反射 显示要显示的列
BindingFlags bf = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static;//反射标识
Type objType = typeof(T);
PropertyInfo[] propInfoArr = objType.GetProperties(bf);
foreach (T model in listModel)
{
writer.WriteLine("<tr>");
foreach (PropertyInfo propInfo in propInfoArr)
{
foreach (string propName in listProperty)
{
if (string.Compare(propInfo.Name.ToUpper(), propName.ToUpper()) == 0)
{
PropertyInfo modelProperty = model.GetType().GetProperty(propName);
if (modelProperty != null)
{
object objResult = modelProperty.GetValue(model, null);
writer.WriteLine("<td>" + ((objResult == null) ? string.Empty : objResult) + "</td>");
}
else
{
throw new Exception("Property name may be not exists!");
}
}
}
}
writer.WriteLine("</tr>");
}
writer.WriteLine("</table>");
writer.WriteLine("</body>");
writer.WriteLine("</html>");
writer.Close();
response.Clear();
response.Buffer = true;
response.Charset = "UTF-8";
currentPage.EnableViewState = false;
response.AddHeader("Content-Disposition", "attachment; filename=" + CreateExcelName() + ".xls");
response.ContentType = "application/ms-excel";
response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
response.Write(writer);
response.End();
}
}
}
}

3、web层的调用
新建一个页面ExportExcelTest.aspx,在page load里加上测试代码。具体类文件如下: 

Copy to ClipboardLiehuo.Net Codes引用的内容:[www.veryhuo.com]
using System;
using System.Data;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using DotNet.Common.Util;
using IBatisNetDemo;
using IBatisNetDemo.Domain;

public partial class ExportExcelTest : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
List<string> listColumns = new List<string>();
listColumns.Add("ID");
listColumns.Add("姓");
listColumns.Add("名");
listColumns.Add("生日");
List<string> listProperties = new List<string>();
listProperties.Add("Id");
listProperties.Add("FirstName");
listProperties.Add("LastName");
listProperties.Add("BirthDate");

List<Person> listModels = new List<Person>();
Person person = new Person();
person.Id = 1;
person.FirstName = "Wong";
person.LastName = "Jeff";
person.BirthDate = DateTime.Now.AddYears(-26);
listModels.Add(person);
person = new Person();
person.Id = 2;
person.FirstName = "Zhao";
person.LastName = "Jeffery";
listModels.Add(person);
//导出excel
ExcelUtil.ExportExcel<Person>(Response, listColumns, listProperties, listModels);
}
}
}

好了,就写到这里。其实每个公司都有自己很成熟的内部的excel处理方式,这里贴的非常简陋,但是毋庸质疑,这是非常简单直接的方式。如果你觉得能用自己看着就拿去用吧,不要忘记笔者整理的功劳啊。

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