文档在线预览（二）-使用JODConverter转换文档为PDF

1.JODConverter介绍：

        JODConverter automates conversions between office document formats using OpenOffice.org or LibreOffice.

        Supported formats include OpenDocument, PDF, RTF, HTML, Word, Excel, PowerPoint, and Flash.

        It can be used as a Java library, a command line tool, or a web application. 

JODConverter可以将一般格式的文档转换为PDF格式。

官网地址：http://code.google.com/p/jodconverter/

下载地址：http://download.csdn.net/detail/jolingogo/5074520

2.示例

这里用的是3.0的版本

OfficeManager officeManager = new DefaultOfficeManagerConfiguration().buildOfficeManager();
officeManager.start();

OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);
converter.convert(new File("test.odt"), new File("test.pdf");
        
officeManager.stop();

如果你直接运行这些代码的话，是不会成功的，报一个错误

Exception in thread "main" java.lang.IllegalStateException: officeHome not set and could not be auto-detected
	at org.artofsolving.jodconverter.office.DefaultOfficeManagerConfiguration.buildOfficeManager(DefaultOfficeManagerConfiguration.java:163)
	at org.ygy.util.PDFUtil.toPDF(PDFUtil.java:11)
	at org.ygy.util.PDFUtil.main(PDFUtil.java:21)

要使用JODconverter需要安装OpenOffice或者LibreOffice，我安装了OpenOffice。

然后设置一下officeHome：

public static void toPDF() {
	    OfficeManager officeManager = new DefaultOfficeManagerConfiguration()
					     .setOfficeHome("D:\\program files\\openoffice.org 3")
					     .buildOfficeManager();
	    officeManager.start();

	    OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);
	    converter.convert(new File("E:\\demo.doc"), new File("E:\\demo_1.pdf"));
	        
	    officeManager.stop();
	}

这下就可以了，之前用2.2的版本，需要手动的开一个服务：

public static void startServer() {
		String cmd = "cmd /k soffice -headless -accept=\"socket,host=127.0.0.1,port=8100;urp;\" -nofirststartwizard";
		try {
			Runtime.getRuntime().exec(cmd , null , new File("D:\\program files\\openoffice.org 3\\program"));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

3.TXT转换为PDF

在将.txt文件转换为PDF的时候发现，如果TXT文件的编码是ANSI的话，中文会产生乱码，解决办法是先将.txt保存为.odt文件,再将.odt文件转换为PDF就可以了。

如果TXT文件的编码是UTF-8的话，中文也可以正常转换。

package org.ygy.util;

import java.io.File;

import org.artofsolving.jodconverter.OfficeDocumentConverter;
import org.artofsolving.jodconverter.office.DefaultOfficeManagerConfiguration;
import org.artofsolving.jodconverter.office.OfficeManager;

public class PDFUtil {
	public static void toPDF(String sourcePath , String targetpath) {
		if(sourcePath.endsWith(".txt")) {
			//先保存为.odt
			StringBuffer odtPath = new StringBuffer(sourcePath.substring(0 , sourcePath.lastIndexOf(".")));
			odtPath.append(".odt");

			FileUtil.write(sourcePath , odtPath.toString());
			sourcePath = odtPath.toString();
		}
		OfficeManager officeManager = new DefaultOfficeManagerConfiguration()
										.setOfficeHome("D:\\program files\\openoffice.org 3")
										.buildOfficeManager();
	    officeManager.start();

	    OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);
	    converter.convert(new File(sourcePath), new File(targetpath));
	        
	    officeManager.stop();
	}
	
	public static void main(String[] args) {
		PDFUtil.toPDF("E:\\type.txt" , "E:\\type_2.pdf");
	}
}

这篇博客还介绍了其他的转换PDF的方法，可以学习一下

http://www.cnblogs.com/luckyxiaoxuan/archive/2012/06/13/2548355.html