引言:
前段时间公司做的教育系统,系统需要实时记录用户学习课程的情况和时间,所以对一些除视频课程之外,对一些文本文档型课件同样如此,初次的方案是讲office相关类型的文件进行转换html文件,然后展示对应的html文件,pc端差不多没问题了,但是个别文件再转换html之后,样式出现了错乱,即时做了编码转换处理,但是还是有个别乱码,最后改变方案,最后统一将文件转为pdf,然后通过流的方式在前端展示,其中包括word excel ppt txt pdf等文件,代码如下:
备注:本来是可以直接展示pdf的,但是andior上pdf展示不了,最后统一就用io流的方式进行读取展示了.
1：添加maven依赖
我要评论<!--excel word txt ppt转pdf依赖-->
<dependency>
<groupid>aspose</groupid>
<artifactid>pdf</artifactid>
<version>11.5.0</version>
</dependency>
<dependency>
<groupid>aspose</groupid>
<artifactid>words</artifactid>
<version>16.4.0</version>
</dependency>
<dependency>
<groupid>aspose</groupid>
<artifactid>cell</artifactid>
<version>8.9.2</version>
</dependency>
<dependency>
<groupid>aspose</groupid>
<artifactid>pdf</artifactid>
<version>11.5.0</version>
</dependency>
2:添加license-excel.xml文件(resource文件夹下)
<license>
<data>
<products>
<product>aspose.total for java</product>
<product>aspose.words for java</product>
</products>
<editiontype>enterprise</editiontype>
<subscriptionexpiry>20991231</subscriptionexpiry>
<licenseexpiry>20991231</licenseexpiry>
<serialnumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</serialnumber>
</data>
<signature>snllkgmudf0r8o1kkilwagdgfs2bvjb/2xp8p5iudvfzxmhppo+d0ran1p9tkdjv4abwagkxxj3jcqtqe/2irfqwnpf8itn8afzlv3tjpyed3ywe7it55gz6eijupc7akeoohtb4w2fpox58wwof3snp6sk6jdfiaugehyj9pju=</signature>
</license>
3:代码如下:
3.1获取license文件
1 public static boolean getlicense(){
2 boolean result = false;
3 inputstream is = null;
4 try{
5
6 is =uploadfiles.class.getclassloader().getresourceasstream("license-excel.xml");
7 license aposelic = new license();
8 aposelic.setlicense(is);
9 result = true;
10 }catch(exception e){
11 e.printstacktrace();
12 }finally{
13 try {
14 is.close();
15 } catch (ioexception e) {
16 // todo auto-generated catch block
17 e.printstacktrace();
18 }
19 }
20 return result;
21 }
3.2:文本文件转码
1 /* 将txt 转换编码
2 * @param file
3 * @author zsqing
4 */
5 public file saveasutf8(file file){
6 string code = "gbk";
7 byte[] head = new byte[3];
8 try {
9 inputstream inputstream = new fileinputstream(file);
10 inputstream.read(head);
11 if (head[0] == -1 && head[1] == -2) {
12 code = "utf-16";
13 } else if (head[0] == -2 && head[1] == -1) {
14 code = "unicode";
15 } else if (head[0] == -17 && head[1] == -69 && head[2] == -65) {
16 code = "utf-8";
17 }
18 inputstream.close();
19
20 system.out.println(code);
21 if (code.equals("utf-8")) {
22 return file;
23 }
24 string str = fileutils.readfiletostring(file, code);
25 fileutils.writestringtofile(file, str, "utf-8");
26 system.out.println("转码结束");
27 } catch (filenotfoundexception e) {
28 e.printstacktrace();
29 } catch (ioexception e) {
30 e.printstacktrace();
31 }
32
33 return file;
34 }
3.3:word和txt转换pdf
1 /**
2 * 将word txt转换成pdf
3 * @param inpath
4 * @param outpath
5 * @author zsqing
6 */
7 public void wordandtexttopdf(string inpath, string outpath ,string localip,httpservletrequest request)
8 {
9 string filetopdfurl="";
10 boolean flag = false;
11 file file = null;
12 fileoutputstream os = null;
13 try
14 {
15 //long old = system.currenttimemillis();
16 // 新建一个空白文档
17 file = new file(outpath);
18 file = saveasutf8(file);
19 os = new fileoutputstream(file);
20 // inpath是将要被转化的文档
21 com.aspose.words.document doc = new com.aspose.words.document(inpath);
22 /*
23 * 全面支持doc,docx进行ooxml,rtf,html,opendocument,pdf,epub,xps,swf间转换
24 */
25 doc.save(os, saveformat.pdf);
26 flag = true;
27 //long now = system.currenttimemillis();
28 //system.out.println("共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时
29
30 }
31 catch (exception e)
32 {
33 e.printstacktrace();
34 }
35 finally
36 {
37 try
38 {
39 if (os != null)
40 {
41 os.close();
42 }
43 }
44 catch (exception e)
45 {
46 e.printstacktrace();
47 }
48 if (!flag)
49 {
50 file.deleteonexit();
51 }
52 }
53 }
3.4:excel转换pdf
1 /**
2 * 将docx转换成pdf
3 * @param inpath
4 * @param outpath
5 * @author zsqing
6 */
7 public void wordtopdf(string inpath, string outpath ,string localip,httpservletrequest request)
8 {
9 string filetopdfurl="";
10 boolean flag = false;
11 file file = null;
12 fileoutputstream os = null;
13 try
14 {
15 //long old = system.currenttimemillis();
16 // 新建一个空白文档
17 file = new file(outpath);
18 file = saveasutf8(file);
19 os = new fileoutputstream(file);
20 // inpath是将要被转化的文档
21 com.aspose.words.document doc = new com.aspose.words.document(inpath);
22 /*
23 * 全面支持doc,docx进行ooxml,rtf,html,opendocument,pdf,epub,xps,swf间转换
24 */
25 doc.save(os, saveformat.pdf);
26 flag = true;
27 //long now = system.currenttimemillis();
28 //system.out.println("共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时
29
30 }
31 catch (exception e)
32 {
33 e.printstacktrace();
34 }
35 finally
36 {
37 try
38 {
39 if (os != null)
40 {
41 os.close();
42 }
43 }
44 catch (exception e)
45 {
46 e.printstacktrace();
47 }
48 if (!flag)
49 {
50 file.deleteonexit();
51 }
52 }
53 }
最近工作有些忙写的就少了,2020年第一篇与大家分享,一起学习,共同成长!
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