1. 服务端输出方式
1.1 html 输出方式最常用方式
优点：不需要任何插件
缺点：不是真正Excel文件，做不了太复杂的格式，偶尔会出现打不开的情况
代码示例：
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
//设置了类型为中文防止乱码的出现
string danwei = SessIOn["danWeiMingCheng"].ToString();
//2011.07.14 luochengxin
Response.AddHeader("Content-Disposition", "inline;filename=手术登记查询.xls", System.Text.Encoding.UTF8));
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
//设置输出流为简体中文
Response.ContentType = "application/ms-excel";
//设置输出文件类型为excel文件。
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
Response.Write(Sbr.ToString());
Response.Write("<meta http-equiv=Content-Type content=text/html;charset=gb2312>");
Response.Write(oStringWriter.ToString());
Response.End();
1.2 office com组件 输出方式
优点：生成真正的Excel文件，强类型编码
缺点：服务器需要安装office且与版本绑定太深（不推荐使用），常用cs类型程序开发
代码示例：
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
ApplicationClass app = new ApplicationClass();
Workbook workBook = app.Workbooks.Open(@"e:\tt.xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
Worksheet sheet = (Worksheet)workBook.Worksheets[1];
Response.Write(sheet.Name "<br/>");
range range = sheet.get_Range("E7:J112", Type.Missing);
Range item = null;
for (int row = 0; row < range.Rows.Count; row )
{
for (int col = 0; col < range.Columns.Count; col )
{
item = (Range)range.get_Item(row, col);
Response.Write(item.Value2);
Response.Write(" | ");
}
Response.Write("<br/>");
}
//关闭
app.Workbooks.Close();
app.Quit();
//释放
System.Runtime.InteropServices.Marshal.ReleaseComObject(item);
System.Runtime.InteropServices.Marshal.ReleaseComObject(range);
System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workBook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(app);
item = null;
app = null;
workBook = null;
range = null;
GC.Collect();
//*进程
try{
KillExcelProcess();
}catch{}
}
}
public void KillExcelProcess()
{
Process[] myProcesses;
myProcesses = Process.GetProcessesByName("Excel");
foreach (Process myProcess in myProcesses)
{
myProcess.Kill();
}
}
1.3 NPOI 输出方式
优点：生成真正的Excel文件，可做特殊复杂操作，且为独立第三方DLL，不需要依然office组件解决了1.2的问题，
缺点：生成时占用内存资源大，CPU耗时大，如果生成一万条以上excel极其容易出现内存溢出
代码示例：
private void button1_Click(object sender, EventArgs e)
{
//创建工作薄
HSSFWorkbook wk = new HSSFWorkbook();
//创建一个名称为mySheet的表
ISheet tb = wk.CreateSheet("mySheet");
//创建一行，此行为第二行
IRow row = tb.CreateRow(1);
for (int i = 0; i < 20; i )
{
ICell cell = row.CreateCell(i); //在第二行中创建单元格
cell.SetCellValue(i);//循环往第二行的单元格中添加数据
}
//打开一个xls文件，如果没有则自行创建，如果存在myxls.xls文件则在创建是不要打开该文件！
using (FileStream fs = File.OpenWrite(@"c:/myxls.xls"))
{
wk.Write(fs); //向打开的这个xls文件中写入mySheet表并保存。
MessageBox.Show("提示：创建成功！");
}
}
2. 客户端输出方式
2.1 OCX组件导出
优点：生成真正的Excel文件
缺点：仅IE下可用，需要开启activeX权限
代码示例：
function AllAreaExcel(content) {
var oXL = new ActiveXObject("Excel.Application");
var oWB = oXL.Workbooks.Add();
var oSheet = oWB.ActiveSheet;
var div_all = content;
var sel = document.body.createTextRange();
sel.moveToElementText(div_all);
sel.select();
sel.execCommand("Copy");
oSheet.Paste();
oXL.Visible = true;
}
2.2 第三方JS插件
优点：
缺点：仅标准H5可用，IE兼容模式下不可能用
可参考：https://www.cnblogs.com/liuxianan/p/js-excel.html
