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ASP.NET MVC 拓展ViewResult实现word文档下载
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最近项目中有同事用到word文档导出功能，遇到了一些导出失败问题，帮其看了下解决问题的同事，看了下之前的代码发现几个问题：
- 代码编写不规范，word导出功能未收口
- 重复代码导出都是
- 实现逻辑比较复杂，不易于维护及使用
在帮其解决问题后，写了下面这个ViewResult拓展，依赖Razor视图，能够直接转换页面为word文档，但是不支持外联样式表，样式可以定义在<head>头部
废话不多说，直接上代码：
? public class WordFileResult : ViewResultBase { public string FileName { get; set; } ? public WordFileResult(object model, string viewName, string fileName) { ViewData = http://www.mamicode.com/new ViewDataDictionary(model); ViewName = viewName; FileName = fileName; } ? public WordFileResult() : this(new ViewDataDictionary(), null, null) { ? } ? public WordFileResult(string fileName) : this(new ViewDataDictionary(), null, fileName) { ? } ? public WordFileResult(object model) : this(model, null, null) { ? } ? public WordFileResult(object model, string fileName) : this(model, null, fileName) { ? } ? protected override ViewEngineResult FindView(ControllerContext context) { context.HttpContext.Response.Charset = "utf-8"; context.HttpContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8"); if (string.IsNullOrWhiteSpace(FileName)) { FileName = ViewName; } context.HttpContext.Response.AppendHeader("Content-Disposition", string.Format("filename={0}.doc", FileName)); context.HttpContext.Response.ContentType = "application/msword"; ViewEngineResult result = ViewEngineCollection.FindView(context, ViewName, string.Empty); if (result.View != null) { return result; } return null; } } ? ? public static class ControllerExtensions { public static WordFileResult Word(this Controller controller, object model) { return new WordFileResult(model); } ? public static WordFileResult Word(this Controller controller, object model, string fileName) { return new WordFileResult(model, fileName); } ? public static WordFileResult Word(this Controller controller, string fileName) { return new WordFileResult(fileName); } ? public static WordFileResult Word(this Controller controller, object model, string viewName, string fileName) { return new WordFileResult(model, viewName, fileName); } ? ? } |
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使用方式比较简单：
- 定义视图，使用Razor视图布局word内容,
@using RazorWord.Models @model List<LoginViewModel> @{ Layout = null; } ? <!DOCTYPE html> ? <html> <head> <meta name="viewport" content="width=device-width" /> <title>Export</title> <style type="text/css"> .table td, .table th { background-color: #fff !important; } ? .table { border-collapse: collapse !important; background-color: #ffffff; width: 100%; margin-bottom: 20px; } ? .table thead > tr > th, .table tbody > tr > th, .table tfoot > tr > th, .table thead > tr > td, .table tbody > tr > td, .table tfoot > tr > td { padding: 8px; line-height: 1.428571429; vertical-align: top; border-top: 1px solid #dddddd; } ? .table thead > tr > th { vertical-align: bottom; border-bottom: 2px solid #dddddd; } </style> </head> <body> <div> <table class="table"> <tr> <th>电子邮件</th> <th>密码</th> <th>是否记住密码</th> </tr> @foreach (LoginViewModel item in Model) { <tr> <td>@item.Email</td> <td>@item.Password]</td> <td>@(item.RememberMe ? "Y" : "N")</td> </tr> } </table> </div> </body> </html> |
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- 添加Action修改对应的Action方法返回值
? public ActionResult Export() { List<LoginViewModel> models = new List<LoginViewModel>(); for (int i = 0; i < 20; i++) { models.Add(new LoginViewModel() { Email = $"{i}user@123.com", Password = new Random().Next(1, 10000).ToString(), RememberMe = i % 2 == 0 ? true : false }); } ? return new WordFileResult(models, "下载文件名称"); } ? public ActionResult Export1() { List<LoginViewModel> models = new List<LoginViewModel>(); for (int i = 0; i < 20; i++) { models.Add(new LoginViewModel() { Email = $"{i}user@123.com", Password = new Random().Next(1, 10000).ToString(), RememberMe = i % 2 == 0 ? true : false }); } return this.Word(models, "Export", "下载文件名称"); } |
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还有一种更方便的方式：使用ActionFilterAttribute过滤器
直接上代码：
public class WordDocumentAttribute : ActionFilterAttribute { public string FileName { get; set; } public override void OnResultExecuted(ResultExecutedContext filterContext) { var result = filterContext.Result as ViewResult; if (string.IsNullOrWhiteSpace(FileName)) { FileName = result == null ? DateTime.Now.ToString("yyyy_MM_dd") : result.ViewName; } filterContext.HttpContext.Response.AppendHeader("Content-Disposition", string.Format("filename={0}.doc", FileName)); filterContext.HttpContext.Response.ContentType = "application/msword"; base.OnResultExecuted(filterContext); } } |
使用方式：在一个Action方法上面添加特性：WordDocumentAttribute
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? [WordDocument(FileName = "下载文件名称")] public ActionResult Index() { return View(); } |
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搞定word导出功能，抛砖引玉，希望能够帮助到大家，也希望有更好实现方式的同学能够一起讨论！！！！！！
ASP.NET MVC 拓展ViewResult实现word文档下载