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
aspose
pdf
11.5.0
aspose
words
16.4.0
aspose
cell
8.9.2
aspose
pdf
11.5.0
2:添加license-excel.xml文件(Resource文件夹下)
Aspose.Total for Java Aspose.Words for Java Enterprise 20991231 20991231 8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7 sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=
3:代码如下:
3.1获取License文件
public static boolean getLicense(){
boolean result = false;
InputStream is = null;
try{
is =UploadFiles.class.getClassLoader().getResourceAsStream("license-excel.xml");
License aposeLic = new License();
aposeLic.setLicense(is);
result = true;
}catch(Exception e){
e.printStackTrace();
}finally{
try {
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return result;
}
3.2:文本文件转码
public File saveAsUTF8(File file){
String code = "gbk";
byte[] head = new byte[3];
try {
InputStream inputStream = new FileInputStream(file);
inputStream.read(head);
if (head[0] == -1 && head[1] == -2) {
code = "UTF-16";
} else if (head[0] == -2 && head[1] == -1) {
code = "Unicode";
} else if (head[0] == -17 && head[1] == -69 && head[2] == -65) {
code = "UTF-8";
}
inputStream.close();
System.out.println(code);
if (code.equals("UTF-8")) {
return file;
}
String str = FileUtils.readFileToString(file, code);
FileUtils.writeStringToFile(file, str, "UTF-8");
System.out.println("转码结束");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return file;
}
3.3:word和txt转换pdf
public void wordAndTextToPdf(String inPath, String outPath ,String localIP,HttpServletRequest request)
{
String fileToPdfUrl="";
boolean flag = false;
File file = null;
FileOutputStream os = null;
try
{
//long old = System.currentTimeMillis();
// 新建一个空白文档
file = new File(outPath);
file = saveAsUTF8(file);
os = new FileOutputStream(file);
// InPath是将要被转化的文档
com.aspose.words.document doc = new com.aspose.words.document(inPath);
doc.save(os, SaveFormat.PDF);
flag = true;
//long now = System.currentTimeMillis();
//System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
if (os != null)
{
os.close();
}
}
catch (Exception e)
{
e.printStackTrace();
}
if (!flag)
{
file.deleteonExit();
}
}
}
3.4:Excel转换pdf
public void wordToPdf(String inPath, String outPath ,String localIP,HttpServletRequest request)
{
String fileToPdfUrl="";
boolean flag = false;
File file = null;
FileOutputStream os = null;
try
{
//long old = System.currentTimeMillis();
// 新建一个空白文档
file = new File(outPath);
file = saveAsUTF8(file);
os = new FileOutputStream(file);
// InPath是将要被转化的文档
com.aspose.words.document doc = new com.aspose.words.document(inPath);
doc.save(os, SaveFormat.PDF);
flag = true;
//long now = System.currentTimeMillis();
//System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒"); // 转化用时
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
if (os != null)
{
os.close();
}
}
catch (Exception e)
{
e.printStackTrace();
}
if (!flag)
{
file.deleteonExit();
}
}
}
总结
以上所述是小编给大家介绍的Java实现Word/Excel/TXT转PDF的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！
如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！
