具体需求是:针对上传的各种office文件(包括.excel,.doc,.docx等)可以下载亦可以在线预览;
写博客的时候有时无暇顾及一些小细节,给读者带来疑问也很正常,所以在看一些博客的时候,多琢磨,不要着急;
实现涉及技术:
利用openOffice把word、excel、txt等类型的文档转换成pdf;
再借助swftools将pdf转换成swf;
然后利用FlexPaper插件实现在线播放预览;
所以需要借助一些工具,先得做好准备工作:
1.openoffice是Apache下的一个开放免费的文字处理软件
下载地址:http://www.openoffice.org/zh-cn/download/
2.SWFTools是一组用来处理Flash的swf文件的工具包,我们使用它将pdf文件转成swf文件!
下载地址:http://www.swftools.org/download.html
3.FlexPaper是一个开源轻量级的在浏览器上显示各种文档的组件
下载地址:FlexPaper官网下载
注意:现在的官网下载具体地址我也没找到,网上有很多免费的demo,可以下载下来,里面的jsp,js复制过来用就ok了;
4.JODConverter一个Java的OpenDocument文件转换器,在此我们只用到它的jar包
下载地址:JODCConverter下载
注意,如果用jodconverter2.2.1不支持doc,需要替换为2.2.2
下载好后
将所下载的文件(JODConverter除外)进行安装,盘符可随自己设定!需要注意的是在openoffice安装完成后,当我们使用它时,需将它的服务打开。在次我们需要以命令的方式打开:
可以编写一个.bat脚本来运行,注意如果不是默认路径替换成你自己的路径:
cd /
cd "Program Files (x86)"
cd "OpenOffice 4"
cd program
soffice -headless -accept="socket,host=127.0.01,port=8100;urp;" -nofirststartwizard
直接执行.bat就行或者手动:
打开cmd窗口,进入openoffice安装盘符,输入以下代码来启动服务:
soffice-headless -accept="socket,host=127.0.0.1,port=8100;urp;"-nofirststartwizard
注意最后一个命令前边的‘—’,可不要写错!服务起不来,项目可是继续不下去的哦.
检查8100有没有被监听:netstat -ano | find /i "8100"
或者查看进程:
说明已经启动;
开发过程:
由于一般当你用到这个功能时候,可能你的上传下载都已经写好了,至于上传下载那些个就不说了,我这里是之前别人写的项目,没有从零开始,
也就不一一叙述了,如果你是新搭建的项目从零开始,那么可以参照https://blog.csdn.net/pangxiao/article/details/78909289还是挺全面的;
我这里直接上项目代码及注意事项:
其中下载的
https://sourceforge.net/projects/jodconverter/files/
lib下面的jar包都搞到项目里面去;
上面是用到的jar;
页面(上传我就不展示了啊):
(${item.sizeKB }kb) | 预览 | 下载 | style="display: none;" class="mySpanFile" > 删除 |
/**
* 预览:
* @param id
* @param request
* @param response
* @return
*/
//@CrossOrigin
@RequestMapping(value="preview",method = RequestMethod.GET)
public String preview(Integer id,HttpServletRequest request,HttpServletResponse response){
String str= appendixService.preview(id, request);
if(str.equals("img")){
return "bjdb/charge/approval/IMGView";
}else{
return "bjdb/charge/approval/documnetView";
}
}
其中preview对应实现:
@Override
public String preview(Integer id,HttpServletRequest request) {
AppendixBean append = appendixBeanMapper.selectByPrimaryKey(id);
String parentP = PropertySetting.getValue("default", "global", "attach-path");
String childenP = PropertySetting.getValue("default", "global", "attach-childen-path");
String img = PropertySetting.getValue("default", "global", "image");
String realPath =parentP+childenP;
String converfilename=realPath+append.getPath();
HttpSession session = request.getSession();
if(append.getTagId().equals(img)){
session.setAttribute("swfpath", childenP+append.getPath());
return "img";
}else{
DocConverter d;
try {
d = new DocConverter(converfilename);
d.conver();
String swfpath =d.getswfPath().substring(d.getswfPath().indexOf(childenP));
session.removeAttribute("swfpath");
session.setAttribute("swfpath", swfpath);
} catch (Exception e) {
e.printStackTrace();
}
return "file";
}
}
preview中对应conver工具类:
package com.jky.until;
/*import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter;
import com.jky.util.PropertySetting;
*//**
* doc docx格式转换
*//*
public class DocConverter {
private static Log log = LogFactory.getLog(DocConverter.class);
private static final int environment = 1;// 环境 1:Windows 2:Linux
private String fileString;// (只涉及PDF2swf路径问题)
private String outputPath = "";// 输入路径 ,如果不设置就输出在默认 的位置
private String fileName;
private File pdfFile;
private File swfFile;
private File docFile;
public DocConverter(String fileString) {
ini(fileString);
if (log.isDebugEnabled()) {
log.debug("转换文件路径" + fileString);
}
}
*//**
* 重新设置file
*
* @param fileString
* 32.
*//*
public void setFile(String fileString) {
ini(fileString);
}
*//**
* @param fileString
*
*//*
private void ini(String fileString) {
this.fileString = fileString;
fileName = fileString.substring(0, fileString.lastIndexOf("."));
docFile = new File(fileString);
pdfFile = new File(fileName + ".pdf");
swfFile = new File(fileName + ".swf");
}
*//**
* 转为PDF
*
* @param file
*
*//*
private void doc2pdf() throws Exception {
if (docFile.exists()) {
if (!pdfFile.exists()) {
OpenOfficeConnection connection = new SocketOpenOfficeConnection("127.0.0.1",8100);
try {
connection.connect();
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
//2018/10/03修改,因为预览
//DocumentConverter converter = new StreamOpenOfficeDocumentConverter(connection);
converter.convert(docFile, pdfFile);
connection.disconnect();
if (log.isDebugEnabled()) {
log.debug("pdf转换成功,PDF输出: " + pdfFile.getPath());
}
} catch (java.net.ConnectException e) {
log.error("swf转换器异常,openoffice 服务未启动", e);
throw e;
} catch (com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException e) {
log.error("swf转换器异常,读取转换文件失败(" + docFile + ")", e);
throw e;
} catch (Exception e) {
log.error("swf转换器异常(" + docFile + ")", e);
throw e;
}
} else {
if (log.isDebugEnabled()) {
log.debug("已经转换为pdf,不需要再进行转化(" + docFile + ")");
}
}
} else {
if (log.isWarnEnabled()) {
log.warn("swf转换器异常,需要转换的文档不存在(" + docFile + ")");
}
}
}
*//** * 转换成 swf *//*
@SuppressWarnings("unused")
private void pdf2swf() throws Exception {
Runtime r = Runtime.getRuntime();
if (!swfFile.exists()) {
if (pdfFile.exists()) {
if (environment == 1) {// windows环境处理
try {
String exePath = PropertySetting.getValue("default",
"global", "swftools-pdf2swf-path");
Process p = r.exec(exePath + " " + pdfFile.getPath()
+ " -o " + swfFile.getPath() + " -T 9");
if (log.isDebugEnabled()) {
log.debug((loadStream(p.getInputStream())));
}
log.error(loadStream(p.getErrorStream()));
if (log.isDebugEnabled()) {
log.debug(loadStream(p.getInputStream()));
log.debug("swf转换成功,文件输出: " + swfFile.getPath());
}
if (pdfFile.exists()) {
pdfFile.delete();
}
} catch (IOException e) {
log.error("PDF转换为SWF错误", e);
throw e;
}
} else if (environment == 2) {// linux环境处理
try {
Process p = r.exec("pdf2swf" + pdfFile.getPath()
+ " -o " + swfFile.getPath() + " -T 9");
if (log.isDebugEnabled()) {
log.debug(loadStream(p.getInputStream()));
}
log.error(loadStream(p.getErrorStream()));
if (log.isDebugEnabled()) {
log.debug("swf转换成功,文件输出: " + swfFile.getPath());
}
if (pdfFile.exists()) {
pdfFile.delete();
}
} catch (Exception e) {
log.error("PDF转换为SWF错误", e);
throw e;
}
}
} else {
log.error("pdf不存在,无法转换(" + pdfFile.getCanonicalPath() + ")");
}
} else {
if (log.isDebugEnabled()) {
log.debug("swf已经存在不需要转换(" + swfFile.getCanonicalPath() + ")");
}
}
}
static String loadStream(InputStream in) throws IOException {
int ptr = 0;
in = new BufferedInputStream(in);
StringBuffer buffer = new StringBuffer();
while ((ptr = in.read()) != -1) {
buffer.append((char) ptr);
}
return buffer.toString();
}
*//**
* * 转换主方法
*//*
@SuppressWarnings("unused")
public boolean conver() {
if (swfFile.exists()) {
if (log.isDebugEnabled()) {
log.debug("swf转换器开始工作,该文件已经转换为 swf");
}
return true;
}
if (environment == 1) {
if (log.isDebugEnabled()) {
log.debug("swf转换器开始工作,当前设置运行环境 windows");
}
} else {
if (log.isDebugEnabled()) {
log.debug("swf转换器开始工作,当前设置运行环境 linux");
}
}
try {
doc2pdf();
pdf2swf();
} catch (Exception e) {
log.error("", e);
return false;
}
if (swfFile.exists()) {
if (log.isDebugEnabled()) {
log.debug("文件存在(" + swfFile + ")");
}
return true;
} else {
if (log.isWarnEnabled()) {
log.warn("文件不存在(" + swfFile + ")");
}
return false;
}
}
*//**
* 返回文件路径
*
* @param
*//*
public String getswfPath() {
if (this.swfFile.exists()) {
String tempString = swfFile.getPath();
tempString = tempString.replaceAll("\\\\", "/");
if (log.isDebugEnabled()) {
log.debug("最后文件路径为" + tempString);
}
return tempString;
} else {
return "文件不存在";
}
}
*//**
* 设置输出路径
*
* @param outputPath
*//*
public void setOutputPath(String outputPath) {
this.outputPath = outputPath;
if (!outputPath.equals("")) {
String realName = fileName.substring(fileName.lastIndexOf("/"),
fileName.lastIndexOf("."));
if (outputPath.charAt(outputPath.length()) == '/') {
swfFile = new File(outputPath + realName + ".swf");
} else {
swfFile = new File(outputPath + realName + ".swf");
}
}
}
}*/
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter;
import com.jky.util.PropertySetting;
public class DocConverter {
private static final int environment = 1;// 环境1:windows,2:linux(涉及pdf2swf路径问题)
private String fileString;
private String outputPath = "";// 输入路径,如果不设置就输出在默认位置
private String fileName;
private File pdfFile;
private File swfFile;
private File docFile;
public DocConverter(String fileString) {
ini(fileString);
}
// * 重新设置 file @param fileString
public void setFile(String fileString) {
ini(fileString);
}
//初始化 @param fileString
private void ini(String fileString) {
this.fileString = fileString;
fileName = fileString.substring(0, fileString.lastIndexOf("."));
docFile = new File(fileString);
pdfFile = new File(fileName + ".pdf");
swfFile = new File(fileName + ".swf");
}
// 转为PDF @param file
private void doc2pdf() throws Exception {
if (docFile.exists()) {
if (!pdfFile.exists()) {
OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
try {
connection.connect();
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(docFile, pdfFile);
// close the connection
connection.disconnect();
System.out.println("****pdf转换成功,PDF输出:" + pdfFile.getPath() + "****");
} catch (java.net.ConnectException e) {
// ToDo Auto-generated catch block
e.printStackTrace();
System.out.println("****swf转换异常,openoffice服务未启动!****");
throw e;
} catch (com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException e) {
e.printStackTrace();
System.out.println("****swf转换器异常,读取转换文件失败****");
throw e;
} catch (Exception e) {
e.printStackTrace();
throw e;
}
} else {
System.out.println("****已经转换为pdf,不需要再进行转化****");
}
} else {
System.out.println("****swf转换器异常,需要转换的文档不存在,无法转换****");
}
}
// 转换成swf
@SuppressWarnings("unused")
private void pdf2swf() throws Exception {
Runtime r = Runtime.getRuntime();
if (!swfFile.exists()) {
if (pdfFile.exists()) {
if (environment == 1)// windows环境处理
{
try {
// 这里根据SWFTools安装路径需要进行相应更改
String exePath = PropertySetting.getValue("default","global", "swftools-pdf2swf-path");
Process p = r.exec(exePath + pdfFile.getPath() + " -o " + swfFile.getPath() + " -T 9");
System.out.print(loadStream(p.getInputStream()));
System.err.print(loadStream(p.getErrorStream()));
System.out.print(loadStream(p.getInputStream()));
System.err.println("****swf转换成功,文件输出:" + swfFile.getPath() + "****");
if (pdfFile.exists()) {
pdfFile.delete();
}
} catch (Exception e) {
e.printStackTrace();
throw e;
}
} else if (environment == 2)// linux环境处理
{
try {
Process p = r.exec("pdf2swf " + pdfFile.getPath() + " -o " + swfFile.getPath() + " -T 9");
System.out.print(loadStream(p.getInputStream()));
System.err.print(loadStream(p.getErrorStream()));
System.err.println("****swf转换成功,文件输出:" + swfFile.getPath() + "****");
if (pdfFile.exists()) {
pdfFile.delete();
}
} catch (Exception e) {
e.printStackTrace();
throw e;
}
}
} else {
System.out.println("****pdf不存在,无法转换****");
}
} else {
System.out.println("****swf已存在不需要转换****");
}
}
static String loadStream(InputStream in) throws IOException {
int ptr = 0;
//把InputStream字节流 替换为BufferedReader字符流 2013-07-17修改
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder buffer = new StringBuilder();
while ((ptr = reader.read()) != -1) {
buffer.append((char) ptr);
}
return buffer.toString();
}
// 转换主方法
public boolean conver() {
if (swfFile.exists()) {
System.out.println("****swf转换器开始工作,该文件已经转换为swf****");
return true;
}
if (environment == 1) {
System.out.println("****swf转换器开始工作,当前设置运行环境windows****");
} else {
System.out.println("****swf转换器开始工作,当前设置运行环境linux****");
}
try {
doc2pdf();
pdf2swf();
} catch (Exception e) {
// TODO: Auto-generated catch block
e.printStackTrace();
return false;
}
if (swfFile.exists()) {
return true;
} else {
return false;
}
}
//返回文件路径 @param s
public String getswfPath() {
if (swfFile.exists()) {
String tempString = swfFile.getPath();
tempString = tempString.replaceAll("\\\\", "/");
return tempString;
} else {
return "";
}
}
//设置输出路径
public void setOutputPath(String outputPath) {
this.outputPath = outputPath;
if (!outputPath.equals("")) {
String realName = fileName.substring(fileName.lastIndexOf("/"), fileName.lastIndexOf("."));
if (outputPath.charAt(outputPath.length()) == '/') {
swfFile = new File(outputPath + realName + ".swf");
} else {
swfFile = new File(outputPath + realName + ".swf");
}
}
}
public static void main(String s[]) {
DocConverter d = new DocConverter("E:/test/fileTest/06b2af1010ec422bb8a74b34ffbb20ac.docx");
d.conver();
}
}
其中DocConverter中对应的路径我的是在配置文件里面配置的,并且没有放在项目之下,数据库里面就存了id和关系;
value="C:/Program Files (x86)/SWFTools/pdf2swf.exe " exe后面没有空格还不行,这是由于工具类转换的问题;
其实以上做了件什么事情呢,就是将上传到e盘下的文件进行转换先转换成pdf再转换成.swf格式;然后将路径存在session中;返回到前台页面用:
代码运行到上面:点击预览按钮:对应controller,执行成功后将转换成的.swf文件路径放入session然后跳转到前台页面:
<%@page contentType="text/html;charset=GBK" %>
<%
String swfFilePath=session.getAttribute("swfpath").toString();
%>
To view this page ensure that Adobe Flash Player version
10.0.0 or greater is installed.
https://blog.csdn.net/weixin_41524017/article/details/82996057