使用openoffice实现文件的预览 使用流的方式实现

    前段时间,项目需求做一个文件预览的功能  通过查资料完成 ,在这里记录一下
首先我们用到openoffice服务  下载安装openoffice   进入安装openoffice的program目录下打开命令窗口.执行soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;"命令启动服务 
转换pdf的工具类
import com.artofsolving.jodconverter.DefaultDocumentFormatRegistry;
import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.DocumentFormat;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter;

import java.io.*;
import java.net.ConnectException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
* Created by Administrator
* on 2018/3/12
*/
public class Doc2HtmlUtil {
private static Doc2HtmlUtil doc2HtmlUtil;

/**
* 获取Doc2HtmlUtil实例
*/
public static synchronized Doc2HtmlUtil getDoc2HtmlUtilInstance() {
if (doc2HtmlUtil == null) {
doc2HtmlUtil = new Doc2HtmlUtil();
}
return doc2HtmlUtil;
}

/**
* 转换文件成html
*
* @param fromFileInputStream:
* @throws IOException
*/
public String file2Html(InputStream fromFileInputStream, String toFilePath,String type,String host,int port) throws IOException {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
String timesuffix = sdf.format(date);
String docFileName = null;
String htmFileName = null;
if("doc".equals(type)){
docFileName = "doc_" + timesuffix + ".doc";
htmFileName = "doc_" + timesuffix + ".html";
}else if("docx".equals(type)){
docFileName = "docx_" + timesuffix + ".docx";
htmFileName = "docx_" + timesuffix + ".html";
}else if("xls".equals(type)){
docFileName = "xls_" + timesuffix + ".xls";
htmFileName = "xls_" + timesuffix + ".html";
}else if("ppt".equals(type)){
docFileName = "ppt_" + timesuffix + ".ppt";
htmFileName = "ppt_" + timesuffix + ".html";
}else{
return null;
}

File htmlOutputFile = new File(toFilePath + File.separatorChar + htmFileName);
File docInputFile = new File(toFilePath + File.separatorChar + docFileName);
if (htmlOutputFile.exists())
htmlOutputFile.delete();
htmlOutputFile.createNewFile();
if (docInputFile.exists())
docInputFile.delete();
docInputFile.createNewFile();
/**
* 由fromFileInputStream构建输入文件
*/
try {
OutputStream os = new FileOutputStream(docInputFile);
int bytesRead = 0;
byte[] buffer = new byte[1024 * 8];
while ((bytesRead = fromFileInputStream.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}

os.close();
fromFileInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}

OpenOfficeConnection connection = new SocketOpenOfficeConnection(host,port);
try {
connection.connect();
} catch (ConnectException e) {
System.err.println("文件转换出错，请检查OpenOffice服务是否启动。");
}
// convert
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(docInputFile, htmlOutputFile);
connection.disconnect();
// 转换完之后删除word文件
docInputFile.delete();
return htmFileName;
}

/**
* 转换文件成pdf
*
* @param fromFileInputStream:
* @throws IOException
*/
public String file2pdf(InputStream fromFileInputStream, String toFilePath,String type,String host,int port) throws IOException {
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
String timesuffix = sdf.format(date);
String docFileName = null;
String htmFileName = null;
if("doc".equals(type)){
docFileName = "doc_" + timesuffix + ".doc";
htmFileName = "doc_" + timesuffix + ".pdf";
}else if("docx".equals(type)){
docFileName = "docx_" + timesuffix + ".docx";
htmFileName = "docx_" + timesuffix + ".pdf";
}else if("xls".equals(type)){
docFileName = "xls_" + timesuffix + ".xls";
htmFileName = "xls_" + timesuffix + ".pdf";
}else if("ppt".equals(type)){
docFileName = "ppt_" + timesuffix + ".ppt";
htmFileName = "ppt_" + timesuffix + ".pdf";
}else{
return null;
}

File htmlOutputFile = new File(toFilePath + File.separatorChar + htmFileName);
File docInputFile = new File(toFilePath + File.separatorChar + docFileName);
if (htmlOutputFile.exists())
htmlOutputFile.delete();
htmlOutputFile.createNewFile();
if (docInputFile.exists())
docInputFile.delete();
docInputFile.createNewFile();
/**
* 由fromFileInputStream构建输入文件
*/
try {
OutputStream os = new FileOutputStream(docInputFile);
int bytesRead = 0;
byte[] buffer = new byte[1024 * 8];
while ((bytesRead = fromFileInputStream.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}

os.close();
fromFileInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}

OpenOfficeConnection connection = new SocketOpenOfficeConnection(host,port);
try {
connection.connect();
} catch (ConnectException e) {
System.err.println("文件转换出错，请检查OpenOffice服务是否启动。");
}
// convert
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(docInputFile, htmlOutputFile);
connection.disconnect();
// 转换完之后删除word文件
docInputFile.delete();
return htmFileName;
}

/**
* 执行前，请启动openoffice服务
* 进入$OO_HOME\program下
* 执行soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;"
* @param xlsfile
* @param targetfile
* @throws Exception
*/
public static void fileConvertPdf(String xlsfile, String targetfile,String type,String host,int port)
throws Exception {
File xlsf = new File(xlsfile);
File targetF = new File(targetfile);
// 获得文件格式
DefaultDocumentFormatRegistry formatReg = new DefaultDocumentFormatRegistry();
DocumentFormat pdfFormat = formatReg.getFormatByFileExtension("pdf");
DocumentFormat docFormat = null;
if("doc".equals(type) || "docx".equals(type)){
docFormat = formatReg.getFormatByFileExtension("doc");
}else if("xls".equals(type) || "xlsx".equals(type)){
docFormat = formatReg.getFormatByFileExtension("xls");
}else if("ppt".equals(type)){
docFormat = formatReg.getFormatByFileExtension("ppt");
}else{
docFormat = formatReg.getFormatByFileExtension("doc");
}
// stream 流的形式
InputStream inputStream = new FileInputStream(xlsf);
OutputStream outputStream = new FileOutputStream(targetF);

/**
*
*/
OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
try {

connection.connect();
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(inputStream, docFormat, outputStream, pdfFormat);
} catch (ConnectException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();
connection = null;
}
}
}

/**
* 执行前，请启动openoffice服务
* 进入$OO_HOME\program下
* 执行soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" 或 soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" -nofirststartwizard
* @param inputStream
* @param outputStream
* @throws Exception
*/
public static void fileConvertPdf(InputStream inputStream, OutputStream outputStream,String type,String host,int port)
throws Exception {
// 获得文件格式
DefaultDocumentFormatRegistry formatReg = new DefaultDocumentFormatRegistry();
DocumentFormat pdfFormat = formatReg.getFormatByFileExtension("pdf");
DocumentFormat docFormat = null;
if(".doc".equals(type) || ".docx".equals(type)){
docFormat = formatReg.getFormatByFileExtension("doc");
}else if(".xls".equals(type) || ".xlsx".equals(type)){
docFormat = formatReg.getFormatByFileExtension("xls");
}else if(".ppt".equals(type)){
docFormat = formatReg.getFormatByFileExtension("ppt");
}else if(".txt".equals(type)){
docFormat = formatReg.getFormatByFileExtension("txt");
}else if(".pdf".equals(type)){
docFormat = formatReg.getFormatByFileExtension("pdf");
}else{
docFormat = formatReg.getFormatByFileExtension("doc");
}
// stream 流的形式
OpenOfficeConnection connection = new SocketOpenOfficeConnection(host,port);
try {

connection.connect();
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(inputStream, docFormat, outputStream, pdfFormat);
} catch (ConnectException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();
connection = null;
}
}
}

public static void main(String[] args) throws Exception {

URL url=new URL("http://192.168.6.152:9000/group1/M00/00/0A/wKgGmFqaFKKAb6ixAAAYAFWbzCU610.xls");//默认主页
InputStream is=url.openStream();//获取网络流

/*//获取网络资源,编码格式不同会出现乱码****************
byte[] flush=new byte[1024];
int len=0;
while(-1!=(len=is.read(flush)))
{

System.out.println(new String(flush,0,len));
}
is.close();
//获取网络资源,编码格式不同会出现乱码*****************/

//解决乱码的方法,转换流
BufferedReader br=new BufferedReader(new InputStreamReader(url.openStream(),"utf-8"));//解码方式,utf-8
String msg=null;
BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(new FileOutputStream("D:\\poi-test\\1.xls"),"utf-8"));
while((msg=br.readLine())!=null)
{
bw.append(msg);
bw.newLine();
}
bw.flush();
bw.close();
br.close();

/*Doc2HtmlUtil coc2HtmlUtil = getDoc2HtmlUtilInstance();
String a = "D:\\poi-test\\exportExcel.xls";
String b = "D:\\poi-test\\exportExcel.pdf";
InputStream inputStream = new FileInputStream(a);
OutputStream outputStream = new FileOutputStream(b);
coc2HtmlUtil.fileConvertPdf(inputStream,outputStream,"xls");*/

/* File file = null;
FileInputStream fileInputStream = null;

file = new File("D:\\poi-test\\exportExcel.xls");
fileInputStream = new FileInputStream(file);
// coc2HtmlUtil.file2Html(fileInputStream, "D:/poi-test/openOffice/xls","xls");
coc2HtmlUtil.file2pdf(fileInputStream, "D:\\poi-test\\openOffice\\xls","xls");*/

/* file = new File("D:/poi-test/test.doc");
fileInputStream = new FileInputStream(file);
// coc2HtmlUtil.file2Html(fileInputStream, "D:/poi-test/openOffice/doc","doc");
coc2HtmlUtil.file2pdf(fileInputStream, "D:/poi-test/openOffice/doc","doc");

file = new File("D:/poi-test/周报模版.ppt");
fileInputStream = new FileInputStream(file);
// coc2HtmlUtil.file2Html(fileInputStream, "D:/poi-test/openOffice/ppt","ppt");
coc2HtmlUtil.file2pdf(fileInputStream, "D:/poi-test/openOffice/ppt","ppt");

file = new File("D:/poi-test/test.docx");
fileInputStream = new FileInputStream(file);
// coc2HtmlUtil.file2Html(fileInputStream, "D:/poi-test/openOffice/docx","docx");
coc2HtmlUtil.file2pdf(fileInputStream, "D:/poi-test/openOffice/docx","docx");*/

}

}控制层访问的方法  只需要传入要进行预览文件的url即可
@RequestMapping("/seeFile")
public void seeFile(String fileUrl,HttpServletResponse response) {
try {
FastDFSClient fastDFSClient = null;
fastDFSClient = new FastDFSClient("fdfs_client.properties");
// String fileUrl = "group1/M00/00/03/wKgGmFp8ROeAQZ_TAAA_UmBde7I00.docx";
String extName = fileUrl.substring(fileUrl.lastIndexOf("."));
// if (".pdf".equals(extName)){
//// File pdfFormat = new File(fileUrl);
//// File docFormat = new File(fileUrl);
// Doc2HtmlUtil coc2HtmlUtil = Doc2HtmlUtil.getDoc2HtmlUtilInstance();
// coc2HtmlUtil.fileConvertPdf(fileUrl,fileUrl,extName,"127.0.0.1",8100);
// }
byte[] bytes = fastDFSClient.downloadFile(fileUrl);
InputStream inputStream = new ByteArrayInputStream(bytes);
OutputStream outputStream = response.getOutputStream();
Doc2HtmlUtil coc2HtmlUtil = Doc2HtmlUtil.getDoc2HtmlUtilInstance();
coc2HtmlUtil.fileConvertPdf(inputStream,outputStream,extName,"127.0.0.1",8100); //openoffice的IP和端口
}catch (Exception e){
e.printStackTrace();
}

}页面的js代码
yuLan: function (url) {
// location.href = "/followRecord/seeFile";
var index = url.lastIndexOf(".");
var fileType = url.substring(index);
// debugger
if (".pdf" == fileType) {
$.ajax({
url: "/task/getFilePath",
type: 'POST',
// async:false,
data: {
"url": url
},
dataType: "text",
error: function () {
// layer.msg("获取pdf文件路径出错");
alert("获取pdf文件路径出错")
},
success: function (data) {
console.log(data);
window.open(data)
}
});
} else {
window.open("/followRecord/seeFile?fileUrl=" + url);
}
},