项目需求需要生成一个PDF文档,使用的是VS2010,ASP.NET。
网络上多次搜索没有自己想要的,于是硬着头皮到itextpdf官网看英文文档,按时完成任务,以实用为主,共享一下:
使用HTML文件创建PDF模板:
使用自定义字体的一种方法:
FontFactory.Register(System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\Fonts\RAGE.TTF", "myFont"); Font myFont = FontFactory.GetFont("myFont"); BaseFont bf = myFont.BaseFont;其中RAGE.TTF是微软操作系统自带的字体,目录在C:WindowsFonts, 建议将需要的字体拷贝到项目中使用,否则会出现引用不到的情况。
使用自定义样式:
StyleSheet css = new StyleSheet(); Dictionary<String, String> dict= new Dictionary<string, string>(); dict.Add(HtmlTags.BGCOLOR, "#01366C"); dict.Add(HtmlTags.COLOR, "#000000"); dict.Add(HtmlTags.SIZE,"25"); css.LoadStyle("css1", dict);
这里既可以使用了StyleSheet的LoadStyle方法。
注意itextsharp对HTML元素的支持很弱,像label、div等元素的对齐、背景颜色等属性支持不好,建议使用table标签。
重写Font的GetFont方法:
public class MyFontFactory : IFontProvider { public Font GetFont(String fontname,String encoding, Boolean embedded, float size,int style, BaseColor color) { if (fontname == "微软雅黑") { string fontpath = System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\Fonts\MSYH.ttf"; BaseFont bf3 = BaseFont.CreateFont(fontpath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED); Font fontContent = new Font(bf3,size,style,color); return fontContent; } else { Font fontContent = FontFactory.GetFont(fontname, size, style, color); return fontContent; } } public Boolean IsRegistered(String fontname) { return false; } }这里要想使用自定义字体需要继承IFontProvider接口,并重写Font的GetFont方法。
将自定义字体和样式表加入到文档:
Dictionary<String, Object> font = new Dictionary<string, object>(); font.Add(HTMLWorker.FONT_PROVIDER,new MyFontFactory()); List<IElement> p = HTMLWorker.ParseToList(new StreamReader(html), css,font);
使用PdfContentByte为元素加背景颜色:
PdfContentByte pcb = writer.DirectContentUnder; pcb.SetRGBColorFill(0, 255, 0); pcb.SetRGBColorFill(1, 54, 108); pcb.Rectangle(20, 413, 800, 42); pcb.Fill();缺点显而易见,就是需要绝对坐标,小弟学疏才浅,再加时间紧迫,只能如此。如果大牛知道更好的方法,还望不吝赐教。
完整代码:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using iTextSharp.text.pdf; using iTextSharp.text; using System.IO; using iTextSharp.text.html.simpleparser; using iTextSharp.text.html; /// <summary> ///CreatePDF 的摘要说明 /// </summary> namespace WSE.LCPI { public class CreatePDF { public CreatePDF() { // //TODO: 在此处添加构造函数逻辑 // } public class MyFontFactory : IFontProvider { public Font GetFont(String fontname,String encoding, Boolean embedded, float size,int style, BaseColor color) { if (fontname == "微软雅黑") { string fontpath = System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\LCPI\Fonts\MSYH.ttf"; BaseFont bf3 = BaseFont.CreateFont(fontpath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED); Font fontContent = new Font(bf3,size,style,color); return fontContent; } else { Font fontContent = FontFactory.GetFont(fontname, size, style, color); return fontContent; } } public Boolean IsRegistered(String fontname) { return false; } } /// <summary> /// 生成PDF /// </summary> /// <param name="html"></param> /// <param name="fileName"></param> /// <returns></returns> public static Boolean HTMLToPDF(string html, String fileName) { Boolean isOK = false; try { TextReader reader = new StringReader(html); // step 1: creation of a document-object Document document = new Document(PageSize.A4.Rotate(), 30, 30, 30, 30); // step 2: // we create a writer that listens to the document // and directs a XML-stream to a file fileName = System.Web.HttpContext.Current.Request.PhysicalApplicationPath + "\PDF\" + fileName+".pdf"; FileStream fs=new FileStream(fileName, FileMode.Create,FileAccess.Write,FileShare.ReadWrite); PdfWriter writer = PdfWriter.GetInstance(document,fs ); HTMLWorker worker = new HTMLWorker(document); document.Open(); worker.StartDocument(); StyleSheet css = new StyleSheet(); Dictionary<String, Object> font = new Dictionary<string, object>(); font.Add(HTMLWorker.FONT_PROVIDER,new MyFontFactory()); Dictionary<String, String> dict= new Dictionary<string, string>(); dict.Add(HtmlTags.BGCOLOR, "#01366C"); dict.Add(HtmlTags.COLOR, "#000000"); dict.Add(HtmlTags.SIZE,"25"); css.LoadStyle("css", dict); List<IElement> p = HTMLWorker.ParseToList(new StreamReader(html), css,font); for (int k = 0; k < p.Count; k++) { document.Add((IElement)p[k]); } PdfContentByte pcb = writer.DirectContentUnder; pcb.SetRGBColorFill(0, 255, 0); pcb.SetRGBColorFill(1, 54, 108); pcb.Rectangle(20, 413, 800, 42); pcb.Fill(); worker.EndDocument(); worker.Close(); document.Close(); reader.Close(); isOK = true; } catch (Exception ex) { isOK = false; } finally { } return isOK; } } }itextpdf官网: http://itextpdf.com/
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