C#：采用TuesPechkin生成Pdf

1、需求

前段时间有个需求，要求把网页生成pdf，找了各种插件，才决定使用这个TuesPechkin，这个是后台采用C#代码进行生成

2、做法

我要做的是一个比较简单的页面，采用MVC绑定，数据动态加载，页面上给个按钮，点击后请求后台接口，便可以生成pdf文件了

3、实现方式

引入两个相关DLL，TuesPechkin.Wkhtmltox.XXX 根据你当前的系统来选择对应的DLL（一般添加前两个就行），

4、生成PDF代码段

先在后台将指定HTML页生成为string字符串，然后调用如下方法即可

/// <summary>
/// //官方要求在程序生命周期内，只能实例化一次
/// </summary>
/// <returns></returns>
public static IConverter GetConverter()
{
lock (Locker)
{
if (converter != null)
{
return converter;
}

var tempFolderDeployment = new TempFolderDeployment();
var winAnyCpuEmbeddedDeployment = new WinAnyCPUEmbeddedDeployment(tempFolderDeployment);
IToolset toolSet;
if (HostingEnvironment.IsHosted)
{
toolSet = new RemotingToolset<PdfToolset>(winAnyCpuEmbeddedDeployment);
}
else
{
toolSet = new PdfToolset(winAnyCpuEmbeddedDeployment);
}

converter = new ThreadSafeConverter(toolSet);
}

return converter;
}

<br><br>  /// <summary>
        /// 生成pdf
        /// </summary>
        /// <param name="htmlStr">生成内容</param>
        /// <param name="path">生成地址</param>
        private static void ConvertHtmlTextToPdf(string htmlStr, string filepath)
        {
            if (!Directory.Exists(filepath))  //不存在文件夹，创建
                Directory.CreateDirectory(filepath);  //创建新的文件夹
 
            var fileName = DateTime.Now.ToString("yyyyMMddHHmmssffff") + ".pdf";
            var path = filepath + fileName;
            var document = new HtmlToPdfDocument
            {
                GlobalSettings =
                {
                    ProduceOutline = true,
                    DocumentTitle = "标题",
                    PaperSize = PaperKind.A4, // Implicit conversion to PechkinPaperSize
                    Margins =
                    {
                        All=0,
                        Unit = Unit.Centimeters
                    }
                },
                Objects =
                {
                    new ObjectSettings
                    {
                        HtmlText =htmlStr,
                        WebSettings =new WebSettings
                        {
                            DefaultEncoding="UTF-8",
                            LoadImages=true,
                        }
                    }
                },
            };
 
 
            byte[] buf = GetConverter().Convert(document);
            //直接把result二进制数据写入文件流
            FileStream fs = new FileStream(path, FileMode.OpenOrCreate);
            fs.Write(buf, 0, buf.Length);
            fs.Close();
            IToolset toolset = new PdfToolset();
            toolset.Unload();  
        }