openoffice实现pdf上传文件预览功能
2015-12-03 08:47
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今天在项目中遇到了一个需要预览上传文件的需求，上传的文件格式主要有word文档和Excel表格以及pdf文档，客户要求能够上传后打开预览查看文件内容，由此在其他项目借鉴了一下别人写的预览功能，觉得很不错特此保留下来以备以后留用，也给需要的朋友分享一下。
1.先下载操作系统对应的openoffice并且安装 地址：https://www.openoffice.org/download/other.html
openoffice 主要目的是将文档转换为pdf文档.
2. windows 下 启动 openoffice 占用默认端口8100
cd C:\Program Files (x86)\OpenOffice 4\program(你电脑上openoffice的安装路径)
执行 soffice -headless -accept="socket,host=127.0.0.1,port=8111;urp;" -nofirststartwizard
3.导入项目中预览功能需求要用的jar包：
ezmorph-1.0.5.jar
jodconverter-2.2.2.jar
jodconverter-cli-2.2.2.jar
morph-1.1.1.jar
juh-3.0.1.jar
jurt-3.0.1.jar
ridl-3.0.1.jar
unoil-3.0.1.jar
xstream-1.3.1.jar
4.写一个转换类DocConverter.java
/**
* doc docx格式转换
*/
public class DocConverter extends BaseAdminAction {
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;
private String ctx;
HttpServletResponse response;
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");
}
/**
* 转换主方法成为html
*/
@SuppressWarnings("unused")
public void convertoHtml(String ctxDir, String save_path, String file_name) {
if (StringUtils.isNotBlank(ctxDir)) {
ctx = ctxDir;
}
String _save_path = "";
if (StringUtils.isNotBlank(save_path)) {
if (save_path.endsWith(".doc")) {
_save_path = save_path.replaceAll(".doc", "");
} else if (save_path.endsWith(".docx")) {
_save_path = save_path.replaceAll(".docx", "");
} else if (save_path.endsWith(".xls")) {
_save_path = save_path.replaceAll(".xls", "");
} else if (save_path.endsWith(".xlsx")) {
_save_path = save_path.replaceAll(".xlsx", "");
} else if (save_path.endsWith(".ppt")) {
_save_path = save_path.replaceAll(".ppt", "");
} else if (save_path.endsWith(".pptx")) {
_save_path = save_path.replaceAll(".pptx", "");
}
}
toHtmlString(new File(ctx + "/" + save_path), ctx + "/" + _save_path, file_name, ctx);
}
/**
* 将office文档转换成html文档
*
* @param docFile 需要转换的office文档
* @param filepath 转换之后html的存放路径
* @return 转换之后的html文件
*/
public static File convert(File docFile, String filepath, String file_name, String ctx) {
// 创建保存html的文件
File htmlFile = new File(ctx + "/filesview/upload/" + file_name + ".html");
// 创建Openoffice连接
OpenOfficeConnection con = new SocketOpenOfficeConnection(8111);
try {
// 连接
con.connect();
} catch (ConnectException e) {
System.out.println("获取OpenOffice连接失败...");
e.printStackTrace();
}
// 创建转换器
DocumentConverter converter = new OpenOfficeDocumentConverter(con);
// 转换文档问html
converter.convert(docFile, htmlFile);
// 关闭openoffice连接
con.disconnect();
return htmlFile;
}
/**
* 将office转换成html文件，并且获取html文件代码。
*
* @param docFile 需要转换的文档
* @param filepath 文档中图片的保存位置
* @return 转换成功的html代码
*/
public static String toHtmlString(File docFile, String filepath, String file_name, String ctx) {
// 转换word文档
File htmlFile = convert(docFile, filepath, file_name, ctx);
// 获取html文件流
StringBuffer htmlSb = new StringBuffer();
try {
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(htmlFile)));
while (br.ready()) {
htmlSb.append(br.readLine());
}
br.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// HTML文件字符串
String htmlStr = htmlSb.toString();
String docImgPath = "/view/upload";
// 返回经过清洁的html文本
return clearFormat(htmlStr, docImgPath);
}
/**
* 清除一些不需要的html标记
*
* @param htmlStr 带有复杂html标记的html语句
* @return 去除了不需要html标记的语句
*/
protected static String clearFormat(String htmlStr, String docImgPath) {
// 获取body内容的正则
String bodyReg = "<BODY .*</BODY>";
Pattern bodyPattern = Pattern.compile(bodyReg);
Matcher bodyMatcher = bodyPattern.matcher(htmlStr);
if (bodyMatcher.find()) {
// 获取BODY内容，并转化BODY标签为DIV
htmlStr = bodyMatcher.group().replaceFirst("<BODY", "<DIV").replaceAll("</BODY>", "</DIV>");
}
// 调整图片地址
htmlStr = htmlStr.replaceAll("<IMG SRC=\"", "<IMG SRC=\"" + docImgPath + "/");
// 把<P></P>转换成</div></div>保留样式
// content = content.replaceAll("(<P)([^>]*>.*?)(<\\/P>)",
// "<div$2</div>");
// 把<P></P>转换成</div></div>并删除样式
htmlStr = htmlStr.replaceAll("(<P)([^>]*)(>.*?)(<\\/P>)", "<p$3</p>");
// 删除不需要的标签
htmlStr = htmlStr.replaceAll(
"<[/]?(font|FONT|span|SPAN|xml|XML|del|DEL|ins|INS|meta|META|[ovwxpOVWXP]:\\w+)[^>]*?>", "");
// 删除不需要的属性
htmlStr = htmlStr
.replaceAll(
"<([^>]*)(?:lang|LANG|class|CLASS|style|STYLE|size|SIZE|face|FACE|[ovwxpOVWXP]:\\w+)=(?:'[^']*'|\"\"[^\"\"]*\"\"|[^>]+)([^>]*)>",
"<$1$2>");
return htmlStr;
}
}5.编写二个预览页面一个展示office类型文件一个展示pdf文件
office文件预览页面public_office_view.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="${ctx}/commons/scripts/jquery.js"></script>
<style type="text/css">
.ico {
background: url(images/ico_preview.png) no-repeat;
}
.down {
background-position: -96px 0;
width: 9px;
height: 10px;
display: inline-block;
margin: 0;
}
.btn_down{
width: 60px;
padding-left: 6px;
font-size: 15px;
}
.btn_gray{
padding: 0;
cursor: pointer;
float: right;
line-height: 21px;
border-radius: 3px;
text-align:center;
border: 1px solid #888;
color: #000000;
color: #000000!important;
background-color: #ccc;
background: -moz-linear-gradient(top,#fff 0%,#ebebeb 90%,#F3F3F3 100%);
background: -webkit-linear-gradient(top,#fff 0%,#ebebeb 90%,#F3F3F3 100%);
}
a{
text-decoration: none;
}
.divtop{
height:50px;
border-bottom: 1px solid #ddd;
margin: 5px;
}
.divtitle{
font-size: 26px;
white-space: nowrap;
font-weight: bold;
color: #000;
}
</style>
</head>
<body>
<div>
<div class="divtop">
<span class="divtitle">${file_name}</span>
<a href="${ctx}/${save_path}" class="btn_gray btn_down"><span class="ico down"></span>下载</a>
</div>
<div class="divcontent">
${html}
</div>
</div>
</body>
</html>PDF预览页面public_pdf_view.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="${ctx}/commons/scripts/jquery.js"></script>
<script type="text/javascript" src="${ctx}/commons/scripts/pdfobject.js"></script>
<style type="text/css" media="screen">
html, body { height:100%; }
body { margin:0; padding:0; overflow:auto; }
#flashContent { display:none; }
</style>
<style type="text/css">
.ico {
background: url(images/ico_preview.png) no-repeat;
}
.down {
background-position: -96px 0;
width: 9px;
height: 10px;
display: inline-block;
margin: 0;
}
.btn_down{
width: 60px;
padding-left: 6px;
font-size: 15px;
}
.btn_gray{
padding: 0;
cursor: pointer;
float: right;
line-height: 21px;
border-radius: 3px;
text-align:center;
border: 1px solid #888;
color: #000000;
color: #000000!important;
background-color: #ccc;
background: -moz-linear-gradient(top,#fff 0%,#ebebeb 90%,#F3F3F3 100%);
background: -webkit-linear-gradient(top,#fff 0%,#ebebeb 90%,#F3F3F3 100%);
}
a{
text-decoration: none;
}
.pTip{
text-align:center;
font-size:20px;
}
.divtitle{
font-size: 26px;
white-space: nowrap;
font-weight: bold;
color: #000;
}
</style>
<title>${file_name}</title>
</head>
<body>
<div>
<!-- <div class="divtop"> -->
<%-- <span class="divtitle">${file_name}</span> --%>
<%-- <a href="${ctx}/${save_path}" class="btn_gray btn_down"><span class="ico down"></span>下载</a> --%>
<!-- </div> -->
<p class="pTip">您没有安装AdobeReader或者该浏览器不支持pdf在线预览，请你下载AdobeReader或者换用其他浏览器！
<a href="http://pan.baidu.com/share/link?shareid=4108323986&uk=959541513" target="_blank" class="btn_gray btn_down" style="float:none;padding:5px;"><span class="ico down"></span>下载AdobeReader</a>
</p>
</div>
<script type="text/javascript">//<![CDATA[
$(document).ready(function(){
window.onload = function (){
var success = new PDFObject({ url: "${ctx}/${save_path}"}).embed();
};
});
//]]></script>
</body>
</html>6.编写异步请求的处理Action添加如下方法代码：
public class CsAjaxAction {
/**
* 附件PDF预览
*
* @author Guoyulong
* @date 2015年3月17日下午6:13:35
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward viewPdfByClue(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
DynaBean dynaBean = (DynaBean) form;
String id = (String) dynaBean.get("id");
String ctxDir = getServlet().getServletContext().getRealPath(
File.separator);
if (!ctxDir.endsWith(File.separator)) {
ctxDir = ctxDir + File.separator;
}
if (StringUtils.isBlank(id)) {
String msg = "传入参数有误";
super.renderJavaScript(response, "alert('" + msg
+ "');history.back();");
return null;
}
ClueAccusation clueAccusation = new ClueAccusation();
clueAccusation.setId(Long.valueOf(id));
clueAccusation = super.getFacade().getClueAccusationService()
.getClueAccusation(clueAccusation);
if (null != clueAccusation) {
String saveDirectory = ctxDir + clueAccusation.getSave_path();
String converfilename = saveDirectory.replaceAll("\\\\", "/");
File file = new File(converfilename);
if (!file.exists()) {
String msg = "文件不存在,不能在线查看!";
super.renderJavaScript(response, "alert('" + msg
+ "');window.close();");
return null;
}
request.setAttribute("save_path", clueAccusation.getSave_path());
request.setAttribute("file_name", clueAccusation.getFile_name());
return new ActionForward("/_public_pdf_view.jsp");
} else {
String msg = "文件不存在,不能在线查看!";
super.renderJavaScript(response, "alert('" + msg
+ "');history.back();");
return null;
}
}
/**
* 附件预览Excel
*
* @author Guoyulong
* @date 2015年3月17日下午6:14:31
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward viewOfficeByClue(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
DynaBean dynaBean = (DynaBean) form;
String id = (String) dynaBean.get("id");
String ctxDir = getServlet().getServletContext().getRealPath(
File.separator);
if (!ctxDir.endsWith(File.separator)) {
ctxDir = ctxDir + File.separator;
}
if (StringUtils.isBlank(id)) {
String msg = "传入参数有误";
super.renderJavaScript(response, "alert('" + msg
+ "');history.back();");
return null;
}
ClueAccusation clueAccusation = new ClueAccusation();
clueAccusation.setId(Long.valueOf(id));
clueAccusation = super.getFacade().getClueAccusationService()
.getClueAccusation(clueAccusation);
if (null != clueAccusation) {
String saveDirectory = ctxDir + clueAccusation.getSave_path();
String converfilename = saveDirectory.replaceAll("\\\\", "/");
File file = new File(converfilename);
if (!file.exists()) {
String msg = "文件不存在,不能在线查看!";
super.renderJavaScript(response, "alert('" + msg
+ "');window.close();");
return null;
}
DocConverter d = new DocConverter(converfilename);
String save_name = clueAccusation.getFile_name();
String _save_name = "";
if (StringUtils.isNotBlank(save_name)) {
if (save_name.endsWith(".doc")) {
_save_name = save_name.replaceAll(".doc", "");
} else if (save_name.endsWith(".docx")) {
_save_name = save_name.replaceAll(".docx", "");
} else if (save_name.endsWith(".xls")) {
_save_name = save_name.replaceAll(".xls", "");
} else if (save_name.endsWith(".xlsx")) {
_save_name = save_name.replaceAll(".xlsx", "");
} else if (save_name.endsWith(".ppt")) {
_save_name = save_name.replaceAll(".ppt", "");
} else if (save_name.endsWith(".pptx")) {
_save_name = save_name.replaceAll(".pptx", "");
}
}
File file2 = new File(ctxDir + "/filesview/upload/" + _save_name
+ ".html");
if (!file2.exists()) {// 如果没有在进行生成html
d.convertoHtml(ctxDir, clueAccusation.getSave_path(),
_save_name);
}
String html = "";
String os_name = System.getProperty("os.name");
if (os_name.toLowerCase().contains("windows")) {
html = FileUtils.readFileToString(new File(ctxDir
+ "/filesview/upload/" + _save_name + ".html"), "GBK");
} else {
html = FileUtils
.readFileToString(new File(ctxDir
+ "/filesview/upload/" + _save_name + ".html"),
"utf-8");
}
if (html.contains("<IMG SRC=\"")) {
html = html.replaceAll("<IMG SRC=\"", "<IMG SRC=\""
+ "filesview/upload/");
}
request.setAttribute("file_name", clueAccusation.getFile_name());
request.setAttribute("save_path", clueAccusation.getSave_path());
request.setAttribute("html", html);
return new ActionForward("/_public_office_view.jsp");
} else {
String msg = "文件不存在,不能在线查看!";
super.renderJavaScript(response, "alert('" + msg
+ "');history.back();");
return null;
}
}
}7.调用我们前面的写好的方式预览文件：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functionsx" prefix="fnx"%>
<%@ taglib uri="http://struts.apache.org/tags-html-el" prefix="html-el" %>
<%@ taglib uri="http://struts.apache.org/tags-logic-el" prefix="logic-el" %>
<%@ taglib uri="http://struts.apache.org/tags-bean-el" prefix="bean-el"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>${naviString}</title>
<link href="${ctx}/manager/css/global.css" rel="stylesheet" type="text/css" />
<link href="${ctx}/manager/css/methods.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div class="position">
<h3>测试文件预览</h3>
</div>
<div class="searchlist">
<html-el:form action="/all/Test.do">
<html-el:hidden property="method" value="save" />
<div class="subtitle02"> 主体信息 </div>
<table width="100%" border="0" cellpadding="5" cellspacing="1" class="rtab2">
<tr>
<th width="19%">名称：</th>
<td>${fn:escapeXml(af.map.title)}</td>
</tr>
<tr>
<th align="right">内容：</th>
<td>${fn:escapeXml(af.map.clue_content)}</td>
</tr>
<tr>
<th width="19%">部门：</th>
<td colspan="3">${fn:escapeXml(af.map.ys_dept_name)}</td>
</tr>
<tr>
<th width="19%">时间：</th>
<td colspan="3">
<fmt:formatDate value="${af.map.ys_date}" pattern="yyyy-MM-dd" />
</td>
</tr>
<c:if test="${af.map.is_answer eq 1 or af.map.is_answer eq 2}">
<tr>
<th align="right">处理内容：</th>
<td>
${fn:escapeXml(af.map.answer_content)}
</td>
</tr>
</c:if>
<c:if test="${af.map.is_deal eq 'true'}">
<tr>
<th align="right"><span style="color: #f00;">*</span>办理内容：</th>
<td>
<html-el:textarea styleId="answer_content" property="answer_content" rows="12" cols="65"/>
</td>
</tr>
</c:if>
<c:if test="${af.map.is_deal eq 'false'}">
<tr>
<th align="right"><span style="color: #f00;">*</span>不办理理由：</th>
<td>
<html-el:textarea styleId="answer_content" property="answer_content" rows="12" cols="65"/>
</td>
</tr>
</c:if>
<tr id="trFile">
<th width="15%" class="title_item" nowrap="nowrap">材料附件：</th>
<td colspan="2" width="85%">
<c:if test="${not empty af.map.file_name}">
<span>
<c:if test="${fn:endsWith(af.map.save_path, '.doc') or fn:endsWith(af.map.save_path, '.docx')
or fn:endsWith(af.map.save_path, '.xls') or fn:endsWith(af.map.save_path, '.xlsx')}">
<a href="${ctx}/CsAjax.do?method=viewOfficeByClue&id=${af.map.id}" target="_blank">在线预览</a>
</c:if>
<c:if test="${fn:endsWith(af.map.save_path, '.pdf')}">
<a href="${ctx}/CsAjax.do?method=viewPdfByClue&id=${af.map.id}" target="_blank">在线预览</a>
</c:if>
<c:if test="${fn:endsWith(af.map.save_path, '.txt')}">
<a href="${ctx}/${af.map.save_path}" target="_blank">在线预览</a>
</c:if>
<a href="${ctx}/${af.map.save_path}">${fn:escapeXml(af.map.file_name)}</a><br />
</span>
</c:if>
</td>
</tr>
</table>
<table width="100%" border="0" align="center" cellpadding="5" cellspacing="1" class="tbl_list">
<tr>
<td align="center">
<c:if test="${not empty af.map.is_deal}">
<html-el:button property="button" styleClass="websub" styleId="btn_submit" value="提 交" /></c:if>
<input name="button2" type="button" class="websub" id="button2" value="返 回" onclick="history.back();"/></td>
</tr>
</table>
</html-el:form>
</div>
<script type="text/javascript" src="${ctx}/commons/scripts/jquery.js"></script>
<script type="text/javascript" src="${ctx}/commons/scripts/validator.js"></script>
<script type="text/javascript" src="${ctx}/commons/scripts/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var f = document.forms[0];
$("#answer_content").attr("datatype","Require").attr("msg","处理内容必须填写");
// 提交
$("#btn_submit").click(function(){
if(Validator.Validate(f, 1)){
$("#btn_submit").attr("value", "正在提交...").attr("disabled", "true");
$("#btn_reset").attr("disabled", "true");
$("#btn_back").attr("disabled", "true");
f.submit();
}
});
});
</script>
</body>
</html>表单上传文件以后就可以实现预览了。
PDF预览JAR.rar (2 MB)
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