java处理office文档与pdf文件(二)
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2022-06-03 09:11:06
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该部分主要内容：文件上传，以及office文件和pdf的html处理，以及提取text
// 根据服务器的文件保存地址和原文件名创建目录文件全路径
File file = this.getFile();
String url = "";
String tempFile = "";
String fileFolder = ""; //上传文件路径
String hz = "";
String oldOrgFileId = null;
Long oldId = knowledge.getZsk_zskID();
if(null != oldId && 0 != oldId){
oldOrgFileId = knowledge.getOrgFileId();
}
if(null != file){
// 截取扩展名
hz = fileFileName.substring(fileFileName.lastIndexOf("."),fileFileName.length());
String zskCode = knowledge.getZsk_Code();
fileFolder = createNewFile(this.savePath,zskCode);
// 上传的文件在服务器中的全路径
url = fileFolder + "\\" + fileFileName;
//1、文件上传
FileUtils.copyFile(file, new File(url));
//2、文件转化为html
tempFile = createNewFile(this.tempPath,zskCode);
String htmlStr = "";
if(hz.equals(".pdf")){
htmlStr = "<html><body>" +
"<embed src='"+fileFileName+"' width='100%' height='100%'></embed>" +
"</body></html>";
}else{
String dstHtml = tempFile+"\\"+zskCode+".html";
//删除文件夹下所有文件及子文件夹
FileUtil.deleteChildFile(new File(tempFile));
changeDocToHtml(hz, url, dstHtml);
htmlStr = FileUtil.htmlToStr(dstHtml);
}
knowledge.setContentHtml(htmlStr);
Clob htmlColb=Hibernate.createClob(htmlStr);
knowledge.setZsk_Description(htmlColb);
//3、获取上传文件对应的文本内容
String docContent = findDocContent(hz, url);
knowledge.setContentText(docContent);
Clob docContentClob=Hibernate.createClob(docContent);
knowledge.setZsk_Text(docContentClob);
String orgFileId = new GUID().toString(); //知识库原文件对应的标识
knowledge.setOrgFileId(orgFileId);
knowledge.setZsk_ContentType(1);
}else{
Clob htmlColb = Hibernate.createClob(htmlArea);
Clob textClob = Hibernate.createClob(htmlArea.replaceAll("</?[^>]+>", ""));
knowledge.setZsk_Description(htmlColb);
knowledge.setContentHtml(htmlArea);
knowledge.setZsk_Text(textClob);
knowledge.setContentText(htmlArea);
knowledge.setZsk_ContentType(2);
}
//添加时处理
if(null == oldId || 0 == oldId){
//to--do 需要在后期重新处理 当前用户
if(null == knowledge.getZsk_Author() || "".equals(knowledge.getZsk_Author())){ //当前用户
knowledge.setZsk_Author(SessionUtil.getTSysAgent().getCagentname());
}
knowledge.setZsk_RegisterTime(new Date());
}
//to---do
knowledge.setZsk_LastMender(1L);
knowledge.setZsk_ModifyTime(new Date());
KnowLedgeOtherContion ko = new KnowLedgeOtherContion();
ko.setFileContentType(fileContentType);
ko.setFileFileName(fileFileName);
ko.setOldId(oldId);
ko.setTempFile(tempFile);
ko.setUrl(url);
ko.setOldOrgFileId(oldOrgFileId);
knowUploadServiceImp.saveOrUpdateKnowledge(knowledge,ko);
将office转化为html
/**
* 将word,excel,ppt,pdf转化为html
* @param hz
* @param url
* @param dstHtml
*/
private void changeDocToHtml(String hz, String url, String dstHtml) {
if("pdf".equalsIgnoreCase(hz)){
}else if(".xls".equalsIgnoreCase(hz) || ".xlsx".equalsIgnoreCase(hz)){
DocToHtml.getInstance().ExceltoHtml(url,dstHtml);
}else if(".doc".equalsIgnoreCase(hz) || ".docx".equalsIgnoreCase(hz)){
DocToHtml.getInstance().WordtoHtml(url,dstHtml);
}else if(".ppt".equalsIgnoreCase(hz) || ".pptx".equalsIgnoreCase(hz)){
DocToHtml.getInstance().PPTtoHtml(url, dstHtml);
}
}
将word,wxcel,ppt另存为html的方法
public boolean WordtoHtml(String srcFile, String dstFile) {
ComThread.InitSTA();
ActiveXComponent activexcomponent = new ActiveXComponent("Word.Application");
String s2 = srcFile;
String s3 = dstFile;
boolean flag = false;
try {
activexcomponent.setProperty("Visible", new Variant(false));
Dispatch dispatch = activexcomponent.getProperty("Documents").toDispatch();
Dispatch dispatch1 = Dispatch.invoke(dispatch, "Open", 1,
new Object[] { s2, new Variant(false), new Variant(true) },
new int[1]).toDispatch();
Dispatch.invoke(dispatch1, "SaveAs", 1, new Object[] { s3,new Variant(8) }, new int[1]);
Variant variant = new Variant(false);
Dispatch.call(dispatch1, "Close", variant);
flag = true;
} catch (Exception exception) {
log.error("word转化为html出错-->"+exception.getMessage());
} finally {
activexcomponent.invoke("Quit", new Variant[0]);
ComThread.Release();
ComThread.quitMainSTA();
}
return flag;
}
public boolean PPTtoHtml(String srcFile, String dstFile) {
ComThread.InitSTA();
ActiveXComponent activexcomponent = new ActiveXComponent( "PowerPoint.Application");
boolean flag = false;
try {
Dispatch dispatch = activexcomponent.getProperty("Presentations")
.toDispatch();
Dispatch dispatch1 = Dispatch.call(dispatch, "Open", srcFile,
new Variant(-1), new Variant(-1), new Variant(0))
.toDispatch();
Dispatch.call(dispatch1, "SaveAs", dstFile, new Variant(12));
// Variant variant = new Variant(-1);
Dispatch.call(dispatch1, "Close");
flag = true;
} catch (Exception exception) {
log.error("ppt转化为html出错-->"+exception.getMessage());
} finally {
activexcomponent.invoke("Quit", new Variant[0]);
ComThread.Release();
ComThread.quitMainSTA();
}
return flag;
}
public boolean ExceltoHtml(String s, String s1) {
ComThread.InitSTA();
ActiveXComponent activexcomponent = new
ActiveXComponent("Excel.Application");
boolean flag = false;
try
{
activexcomponent.setProperty("Visible", new Variant(false));
Dispatch dispatch = activexcomponent.getProperty("Workbooks").toDispatch();
Dispatch dispatch1 = Dispatch.invoke(dispatch, "Open", 1, new Object[] {
s, new Variant(false), new Variant(true)}, new int[1]).toDispatch();
Dispatch.call(dispatch1, "SaveAs", s1, new Variant(44));
Variant variant = new Variant(false);
Dispatch.call(dispatch1, "Close", variant);
flag = true;
}catch(Exception exception){
log.error("excel转化为html出错-->"+exception.getMessage());
}finally{
activexcomponent.invoke("Quit", new Variant[0]);
ComThread.Release();
ComThread.quitMainSTA();
}
return flag;
}
获取office文件以及pdf的文本内容
private String findDocContent(String hz, String url) {
String docContent = null;
File file = new File(url);
if(".pdf".equalsIgnoreCase(hz)){
docContent = GetDocText.getDocTextInta().getTextFromPdf(file);
}else if(".xls".equalsIgnoreCase(hz) || ".xlsx".equalsIgnoreCase(hz)){
docContent = GetDocText.getDocTextInta().getTextFromExcel(file);
}else if(".doc".equalsIgnoreCase(hz) || ".docx".equalsIgnoreCase(hz)){
docContent = GetDocText.getDocTextInta().getTextFromWord(file);
}else if(".ppt".equalsIgnoreCase(hz) || ".pptx".equalsIgnoreCase(hz)){
docContent = GetDocText.getDocTextInta().getTextFromPPT(file);
}
return docContent;
}
具体的实现方法
/**
* 从word文件获取文本内容
*
* @param wordFile
* @return word文件的文本内容
*/
public String getTextFromWord(File wordFile) {
String wordText = "";
InputStream is = null;
try {
//word 2003： 图片不会被读取
is = new FileInputStream(wordFile);
String fileName = wordFile.getName();
String hz = fileName.substring(fileName.lastIndexOf("."),fileName.length());
if(".doc".equals(hz)){
WordExtractor ex = new WordExtractor(is);
wordText = ex.getText();
}else{
OPCPackage opcPackage = POIXMLDocument.openPackage(wordFile.getAbsolutePath());
POIXMLTextExtractor extractor = new XWPFWordExtractor(opcPackage);
wordText = extractor.getText();
}
} catch (Exception e) {
e.printStackTrace();
}finally{
if(is != null){
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return wordText;
}
/**
* 从excel获取文本内容
*
* @param excelFile
* @return Excel文件的文本内容
*/
public String getTextFromExcel(File excelFile) {
String text = "";
InputStream in = null;
try {
//创建相关的文件流对象
in = new FileInputStream(excelFile);
//声明相关的工作薄对象
Workbook wb =null;
//声明相关的excel抽取对象
ExcelExtractor extractor=null;
String fileName = excelFile.getName();
String hz = fileName.substring(fileName.lastIndexOf("."),fileName.length());
if(hz.equals(".xls"))//针对2003版本
{
//创建excel2003的文件文本抽取对象
wb=new HSSFWorkbook(new POIFSFileSystem(in));
extractor =new org.apache.poi.hssf.extractor.ExcelExtractor((HSSFWorkbook)wb);
}else{ //针对2007版本
wb = new XSSFWorkbook(in);
//创建excel2007的文件文本抽取对象
extractor =new XSSFExcelExtractor((XSSFWorkbook)wb);
}
extractor.setFormulasNotResults(false);
//是否抽象sheet页的名称
extractor.setIncludeSheetNames(true);
//是否抽取cell的注释内容
extractor.setIncludeCellComments(true);
//获取相关的抽取文本信息
text = extractor.getText();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in != null){
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return text;
}
/**
* 从ppt获取文本内容
*
* @param pptFile
* @return ppt文件的文本内容
*/
public String getTextFromPPT(File pptFile){
String pptText = null;
FileInputStream fin = null;
try {
fin = new FileInputStream(pptFile);
String fileName = pptFile.getName();
String hz = fileName.substring(fileName.lastIndexOf("."),fileName.length());
if(".ppt".equals(hz)){
QuickButCruddyTextExtractor qct = new QuickButCruddyTextExtractor(fin);
pptText = qct.getTextAsString();
}else{
OPCPackage opcPackage = POIXMLDocument.openPackage(pptFile.getAbsolutePath());
XSLFPowerPointExtractor pptExtractor = new XSLFPowerPointExtractor(opcPackage);
pptText = pptExtractor.getText();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (XmlException e) {
e.printStackTrace();
} catch (OpenXML4JException e) {
e.printStackTrace();
}finally{
if(null != fin){
try {
fin.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return pptText;
}
/**
* 从pdf文件获取文本内容
*
* @param pdfFile
* @return pdf文件的文本内容
*/
public String getTextFromPdf(File pdfFile){
String result = null;
FileInputStream is = null;
PDDocument document = null;
try{
is = new FileInputStream(pdfFile);
PDFParser parser = new PDFParser(is);
parser.parse();
document = parser.getPDDocument();
PDFTextStripper stripper = new PDFTextStripper();
result = stripper.getText(document);
}catch(FileNotFoundException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}finally{
if(is != null){
try{
is.close();
}catch(IOException e){
e.printStackTrace();
}
}
if(document != null){
try{
document.close();
}catch(IOException ex){
ex.printStackTrace();
}
}
}
return result;
}
/**
*
* @param txtFile
* @return 返回txt的内容
*/
public String getTextFromTxt(File txtFile){
FileReader fr;
StringBuffer buff = new StringBuffer();
try {
fr = new FileReader(txtFile);
BufferedReader br = new BufferedReader(fr);
String temp = null;
while((temp = br.readLine()) != null){
buff.append(temp + "\r\n");
}
br.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buff.toString();
}
对带有clob字段的实体save时，直接调用hibernate的save即可。ojdbc14.jar。
更新时的处理 如下：
public void updateKnowledge(Knowledge knowledge) {
try {
knowledge.setZsk_Description(Hibernate.createClob(" "));
knowledge.setZsk_Text(Hibernate.createClob(" "));
update(knowledge);
flush();
getSession().refresh(knowledge, LockMode.UPGRADE);
SerializableClob htmlSc=(SerializableClob)knowledge.getZsk_Description();
SerializableClob textSc=(SerializableClob)knowledge.getZsk_Text();
Clob htmlWrapclob=htmlSc.getWrappedClob();
Clob textWrapclob=textSc.getWrappedClob();
CLOB htmlClob2=(CLOB)htmlWrapclob;
CLOB textClob2=(CLOB)textWrapclob;
Writer htmlWriter=htmlClob2.getCharacterOutputStream();
htmlWriter.write(knowledge.getContentHtml());
htmlWriter.close();
Writer textWriter=textClob2.getCharacterOutputStream();
textWriter.write(knowledge.getContentText());
textWriter.close();
update(knowledge);
} catch (RuntimeException re) {
throw re;
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
上面几步做完，基本可以完成上传以及存入数据库，以及对带有clob文件的更新。
需要的环境 windows，jacob-1.17-M2-x64 具体的jacob下载和配置 参照网络。poi-3.9