java pdf 转 swf_java pdf 转 swf
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 +"\" -s languagedir=D:\\xpdf\\xpdf-chinese-simplified -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