Java Process.exitValue & Process.waitFor()
Process.exitValue() 采用非阻塞的方式返回，如果没有立即拿到返回值，则抛出异常
Process.waitFor() 当前线程等待，如有必要，一直要等到由该 Process 对象表示的进程已经终止。但是如果我们在调用此方法时，如果不注意的话，很容易出现主线程阻塞，Process也挂起的情况。在调用waitFor() 的时候，Process需要向主线程汇报运行状况，所以要注意清空缓存区，即InputStream和ErrorStream，在网上，很多只提到处理InputStream，忽略了ErrorStream。以下一段代码，贴出来，仅做参考。
import java.io.BufferedReader;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.util.List;/** PDF转SWF工具* @author tangs**/public class Converter { public static int convertPDF2SWF(String sourcePath, String destPath, String fileName) throws IOException {////目标路径不存在则建立目标路径 File dest = new File(destPath); if (!dest.exists()) dest.mkdirs(); //源文件不存在则返回 File source = new File(sourcePath); if (!source.exists()) return 0; //调用pdf2swf命令进行转换// String command = "D:\\swftools\\pdf2swf.exe" + " -o \"" + destPath + fileName +"\" <SPAN style='COLOR: #ff0000'>-s languagedir=D:\\xpdf\\xpdf-chinese-simplified</SPAN> -s flashversion=9 \"" + sourcePath + "\"";// String command = "D:\\swftools\\pdf2swf.exe" + " -o \"" + destPath + fileName +"\" -s flashversion=9 \"" + sourcePath + "\""; String command= "D:/SWFTools/pdf2swf.exe -t \""+destPath+"\\Java.pdf\" -o \""+destPath+"\\test.swf\" -s flashversion=9 -s languagedir=D:\\xpdf\\xpdf-chinese-simplified "; System.out.println("cmd:"+command);// Process pro = Runtime.getRuntime().exec(command); Process process = Runtime.getRuntime().exec(command); // 调用外部程序 final InputStream is1 = process.getInputStream(); new Thread(new Runnable() { public void run() { BufferedReader br = new BufferedReader(new InputStreamReader(is1)); try { while(br.readLine()!= null) ; } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }).start(); // 启动单独的线程来清空process.getInputStream()的缓冲区 InputStream is2 = process.getErrorStream(); BufferedReader br2 = new BufferedReader(new InputStreamReader(is2)); StringBuilder buf = new StringBuilder(); // 保存输出结果流 String line = null; while((line = br2.readLine()) != null) buf.append(line); // 循环等待ffmpeg进程结束 System.out.println("输出结果为：" + buf); // BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(pro.getInputStream())); while (br2.readLine() != null); try { process.waitFor(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } return process.exitValue(); } public static void main(String []args) throws IOException { String sourcePath = "D:\\Java.pdf"; String destPath = "D:\\"; String fileName = "Javssa.swf"; try{ Converter.convertPDF2SWF(sourcePath, destPath, fileName); }catch(Exception ex) { System.out.println("error"); } System.out.println("success"); }}
工具准备
swftools.exe 下载
http://www.swftools.org/download.html
安装至D盘
SWFTools提供了一系列将各种文件转成swf的工具：
font2swf.exe
gif2swf.exe
jpeg2swf.exe
pdf2swf.exe
png2swf.exe
wav2swf.exe
这里我们只使用pdf2swf.exe
flexpaper下载
http://code.google.com/p/flexpaper/
这里我们使用已经编译好的FlexPaper的flash版本
来源：https://www.cnblogs.com/xiaoqiufengIT/archive/2011/11/23/2259918.html