1.使用NuGet下载iTextSharp Version=5.5.10.0
1 public class ConvertPDF
2 {
3 private static string fontPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"C:\WINDOWS\Fonts\SIMFANG.TTF");
4
5 /// <summary>
6 /// 添加普通偏转角度文字水印保存到文件
7 /// </summary>
8 /// <param name="inputfilepath">文件地址</param>
9 /// <param name="outputfilepath"></param>
10 /// <param name="waterMarkName"></param>
11 public static void SetWatermarkToPath(string inputfilepath, string waterMarkName, string outputfilepath, string fontS = "25", string bigWaterMarkName = "")
12 {
13 //if (string.IsNullOrEmpty(waterMarkName))
14 //{
15 // try { File.Delete(inputfilepath); } catch (Exception e) { }
16 // throw new Exception("水印文字不能为空");
17 //}
18
19 PdfReader pdfReader = null;
20 PdfStamper pdfStamper = null;
21 try
22 {
23 pdfReader = new PdfReader(inputfilepath);
24 pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.Create));
25 int total = pdfReader.NumberOfPages + 1;
26 iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1);
27 float width = psize.Width;
28 float height = psize.Height;
29 PdfContentByte content;
30 BaseFont font = BaseFont.CreateFont(fontPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
31 PdfGState gs = new PdfGState()
32 {
33 FillOpacity = 0.8f//透明度
34 };
35 //for (int i = 1; i < total; i++)
36 //{
37 // content = pdfStamper.GetOverContent(i);//在内容上方加水印
38 // content = pdfStamper.GetUnderContent(i);//在内容下方加水印
39 // //透明度
40 // gs.FillOpacity = 0.3f;
41 // content.SetGState(gs);
42 // content.SetGrayFill(0.3f);
43 // //开始写入文本
44 // content.BeginText();
45 // content.SetColorFill(BaseColor.LightGray);
46 // content.SetFontAndSize(font, 100);
47 // content.SetTextMatrix(0, 0);
48 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 - 50, height / 2 - 50, 55);
49 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 +50, height / 2+50, 55);
50 // //content.SetColorFill(BaseColor.BLACK);
51 // //content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, 0, 0, 0);
52 // content.EndText();
53 //}
54 int span = 1;//设置垂直位移
55 int spanHeight = new Random().Next(120, 200);//垂直间距
56 int fontSize = !string.IsNullOrEmpty(fontS) ? Convert.ToInt32(fontS) : 25;//设置字体大小
57 int waterMarkNameLenth = waterMarkName.Length;
58 char c;
59 int rise = 0;
60 string spanString = "";//字符间距
61 int spanWidth = 4;//水平位移
62 int spanWaterMarkNameWidth = new Random().Next(100, 150);//水印文字位移宽度
63 for (int i = 1; i < total; i++)
64 {
65 rise = waterMarkNameLenth * span + spanHeight;
66 content = pdfStamper.GetOverContent(i);//在内容上方加水印
67 //content = pdfStamper.GetUnderContent(i);//在内容下方加水印
68 content.SetGState(gs);
69 content.BeginText();
70 content.SetColorFill(BaseColor.LIGHT_GRAY);
71 content.SetFontAndSize(font, fontSize);
72
73
74 int heightNumbert = (int)Math.Ceiling((decimal)height / (decimal)rise);//垂直重复的次数，进一发
75 int panleWith = fontSize * waterMarkNameLenth / 2 + spanWaterMarkNameWidth;
76 int widthNumber = (int)Math.Ceiling((decimal)width / (decimal)panleWith);//水平重复次数
77
78 for (int w = 0; w < widthNumber; w++)
79 {
80 for (int h = 1, f = heightNumbert - 1; h <= heightNumbert; h++, f--)
81 {
82 int yleng = rise * h;
83 int wleng = (w * panleWith) + (spanWidth * f);
84 content.SetTextMatrix(wleng, yleng);//x,y设置水印开始的绝对左边，以左下角为x，y轴的起点
85
86 content.ShowTextAligned(Element.ALIGN_JUSTIFIED_ALL, waterMarkName, wleng, yleng, 5);
87
88 //content.ShowText(spanString);
89 //for (int k = 0; k < waterMarkNameLenth; k++)
90 //{
91 // content.SetTextRise(yleng);//指定的y轴值处添加
92 // c = waterMarkName[k];
93 // content.ShowText(c + spanString);
94 // yleng += span;
95 //}
96 }
97 }
98
99 content.EndText();
100 }
101 }
102 catch (Exception ex)
103 {
104 throw ex;
105 }
106 finally
107 {
108
109 if (pdfStamper != null)
110 pdfStamper.Close();
111
112 if (pdfReader != null)
113 pdfReader.Close();
114 }
115 }
116
117
118 /// <summary>
119 /// 添加普通偏转角度文字水印保存到文件
120 /// </summary>
121 /// <param name="isp">文件流</param>
122 /// <param name="outputfilepath"></param>
123 /// <param name="waterMarkName"></param>
124 /// <param name="permission"></param>
125 public static void SetWatermarkToPath(Stream isp, string waterMarkName, string outputfilepath, string fontS = "25", string bigWaterMarkName = "")
126 {
127 //if (string.IsNullOrEmpty(waterMarkName))
128 //{
129 // return;
130 //}
131
132 PdfReader pdfReader = null;
133 PdfStamper pdfStamper = null;
134 try
135 {
136 pdfReader = new PdfReader(isp);
137 pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.Create));
138 int total = pdfReader.NumberOfPages + 1;
139 iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1);
140 float width = psize.Width;
141 float height = psize.Height;
142 PdfContentByte content;
143 BaseFont font = BaseFont.CreateFont(fontPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
144 PdfGState gs = new PdfGState()
145 {
146 FillOpacity = 0.4f//透明度
147 };
148 //for (int i = 1; i < total; i++)
149 //{
150 // content = pdfStamper.GetOverContent(i);//在内容上方加水印
151 // content = pdfStamper.GetUnderContent(i);//在内容下方加水印
152 // //透明度
153 // gs.FillOpacity = 0.3f;
154 // content.SetGState(gs);
155 // content.SetGrayFill(0.3f);
156 // //开始写入文本
157 // content.BeginText();
158 // content.SetColorFill(BaseColor.LightGray);
159 // content.SetFontAndSize(font, 100);
160 // content.SetTextMatrix(0, 0);
161 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 - 50, height / 2 - 50, 55);
162 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 +50, height / 2+50, 55);
163 // //content.SetColorFill(BaseColor.BLACK);
164 // //content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, 0, 0, 0);
165 // content.EndText();
166 //}
167 int span = 1;//设置垂直位移
168 int spanHeight = new Random().Next(60, 100);//垂直间距
169 int fontSize = !string.IsNullOrEmpty(fontS) ? Convert.ToInt32(fontS) : 25;//设置字体大小
170 int waterMarkNameLenth = waterMarkName.Length;
171 char c;
172 int rise = 0;
173 string spanString = "";//字符间距
174 int spanWidth = 4;//水平位移
175 int spanWaterMarkNameWidth = 90;//水印文字位移宽度
176 for (int i = 1; i < total; i++)
177 {
178 rise = waterMarkNameLenth * span + spanHeight;
179 content = pdfStamper.GetOverContent(i);//在内容上方加水印
180 //content = pdfStamper.GetUnderContent(i);//在内容下方加水印
181 content.SetGState(gs);
182 content.BeginText();
183 content.SetColorFill(BaseColor.LIGHT_GRAY);
184 content.SetFontAndSize(font, fontSize);
185
186
187 int heightNumbert = (int)Math.Ceiling((decimal)height / (decimal)rise);//垂直重复的次数，进一发
188 int panleWith = fontSize * waterMarkNameLenth / 2 + spanWaterMarkNameWidth;
189 int widthNumber = (int)Math.Ceiling((decimal)width / (decimal)panleWith);//水平重复次数
190
191 for (int w = 0; w < widthNumber; w++)
192 {
193 for (int h = 1, f = heightNumbert - 1; h <= heightNumbert; h++, f--)
194 {
195 int yleng = rise * h;
196 int wleng = (w * panleWith) + (spanWidth * f);
197 content.SetTextMatrix(wleng, yleng);//x,y设置水印开始的绝对左边，以左下角为x，y轴的起点
198
199 content.ShowTextAligned(Element.ALIGN_JUSTIFIED_ALL, waterMarkName, wleng, yleng, 5);
200
201 //content.ShowText(spanString);
202 //for (int k = 0; k < waterMarkNameLenth; k++)
203 //{
204 // content.SetTextRise(yleng);//指定的y轴值处添加
205 // c = waterMarkName[k];
206 // content.ShowText(c + spanString);
207 // yleng += span;
208 //}
209 }
210 }
211
212 content.EndText();
213 }
214 }
215 catch (Exception ex)
216 {
217 throw ex;
218 }
219 finally
220 {
221
222 if (pdfStamper != null)
223 pdfStamper.Close();
224
225 if (pdfReader != null)
226 pdfReader.Close();
227 }
228 }
229
230 /// <summary>
231 /// 添加普通偏转角度文字水印（保存到内存）
232 /// </summary>
233 /// <param name="inStream"></param>
234 /// <param name="waterMarkName"></param>
235 /// <param name="fontS"></param>
236 /// <param name="bigWaterMarkName"></param>
237 /// <returns></returns>
238 public static MemoryStream SetWatermark(Stream inStream, string waterMarkName, string fontS = "25", string bigWaterMarkName = "")
239 {
240 MemoryStream outStream = new MemoryStream();
241
242 if (string.IsNullOrEmpty(waterMarkName))
243 {
244 inStream.CopyTo(outStream);
245 return outStream;
246 }
247
248
249 PdfReader pdfReader = null;
250 PdfStamper pdfStamper = null;
251 try
252 {
253 pdfReader = new PdfReader(inStream);
254 pdfStamper = new PdfStamper(pdfReader, outStream);
255 int pages = pdfReader.NumberOfPages + 1;
256 iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1);
257 float width = psize.Width;
258 float height = psize.Height;
259 PdfContentByte content;
260 BaseFont font = BaseFont.CreateFont(fontPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
261 PdfGState gs = new PdfGState()
262 {
263 FillOpacity = 0.4f//透明度
264 };
265 //for (int i = 1; i < total; i++)
266 //{
267 // content = pdfStamper.GetOverContent(i);//在内容上方加水印
268 // content = pdfStamper.GetUnderContent(i);//在内容下方加水印
269 // //透明度
270 // gs.FillOpacity = 0.3f;
271 // content.SetGState(gs);
272 // content.SetGrayFill(0.3f);
273 // //开始写入文本
274 // content.BeginText();
275 // content.SetColorFill(BaseColor.LightGray);
276 // content.SetFontAndSize(font, 100);
277 // content.SetTextMatrix(0, 0);
278 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 - 50, height / 2 - 50, 55);
279 // content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 +50, height / 2+50, 55);
280 // //content.SetColorFill(BaseColor.BLACK);
281 // //content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, 0, 0, 0);
282 // content.EndText();
283 //}
284 int span = 1;//设置垂直位移
285 int spanHeight = new Random().Next(60, 100);//垂直间距
286 int fontSize = !string.IsNullOrEmpty(fontS) ? Convert.ToInt32(fontS) : 25;//设置字体大小
287 int waterMarkNameLenth = waterMarkName.Length;
288 char c;
289 int rise = 0;
290 string spanString = "";//字符间距
291 int spanWidth = 4;//水平位移
292 int spanWaterMarkNameWidth = 90;//水印文字位移宽度
293 for (int i = 1; i < pages; i++)
294 {
295 rise = waterMarkNameLenth * span + spanHeight;
296 content = pdfStamper.GetOverContent(i);//在内容上方加水印
297 //content = pdfStamper.GetUnderContent(i);//在内容下方加水印
298 content.SetGState(gs);
299 content.BeginText();
300 content.SetColorFill(BaseColor.LIGHT_GRAY);
301 content.SetFontAndSize(font, fontSize);
302
303
304 int heightNumbert = (int)Math.Ceiling((decimal)height / (decimal)rise);//垂直重复的次数，进一发
305 int panleWith = fontSize * waterMarkNameLenth / 2 + spanWaterMarkNameWidth;
306 int widthNumber = (int)Math.Ceiling((decimal)width / (decimal)panleWith);//水平重复次数
307
308 for (int w = 0; w < widthNumber; w++)
309 {
310 for (int h = 1, f = heightNumbert - 1; h <= heightNumbert; h++, f--)
311 {
312 int yleng = rise * h;
313 int wleng = (w * panleWith) + (spanWidth * f);
314 content.SetTextMatrix(wleng, yleng);//x,y设置水印开始的绝对左边，以左下角为x，y轴的起点
315
316 content.ShowTextAligned(Element.ALIGN_JUSTIFIED_ALL, waterMarkName, wleng, yleng, 5);
317
318 //content.ShowText(spanString);
319 //for (int k = 0; k < waterMarkNameLenth; k++)
320 //{
321 // content.SetTextRise(yleng);//指定的y轴值处添加
322 // c = waterMarkName[k];
323 // content.ShowText(c + spanString);
324 // yleng += span;
325 //}
326 }
327 }
328
329 content.EndText();
330 }
331 }
332 catch (Exception ex)
333 {
334
335
336
337 throw ex;
338 }
339 finally
340 {
341 if (pdfStamper != null)
342 pdfStamper.Close();
343
344 if (pdfReader != null)
345 pdfReader.Close();
346 }
347
348 return outStream;
349 }
350
351
352 //public static string GetMapPath(string strPath)
353 //{
354 // if (HttpContext.Current != null)
355 // {
356 // return HttpContext.Current.Server.MapPath(strPath);
357 // }
358 // else //非web程序引用
359 // {
360 // return System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath);
361 // }
362 //}
363 }