java读取pdf文件类型的流

[zxm0109]

在控制台只输出了第一页的内容，其余的都没有读出来，控制台的信息是：

2012-7-31 11:22:26 org.apache.pdfbox.util.PDFStreamEngine processOperator
信息: unsupported/disabled operation: EI



求解决方法

[pandrawla]

public String getPdfContent(String filePath){
String excute="pdftotext";

String[] cmd=new String[]{excute, "-enc", "UTF-8", "-q", filePath,"-"};
Process p=null;
try {
p=Runtime.getRuntime().exec(cmd);
} catch (IOException e) {
e.printStackTrace();
}

BufferedInputStream bis=new BufferedInputStream(p.getInputStream());

InputStreamReader reader=null;

try {
reader=new InputStreamReader(bis,"UTF-8");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}

StringBuffer sb=new StringBuffer();

try {
BufferedReader br = new BufferedReader(reader);
String line = br.readLine();
sb = new StringBuffer();
while (line != null) {
sb.append(line);
sb.append(" ");
line = br.readLine();
}
} catch (Exception e) {
e.printStackTrace();
}

return sb.toString();
}

[zxm0109]

还是不可以啊！！！



java.io.IOException: Cannot run program "pdftotext": CreateProcess error=2, ?????????
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at readPdf.Zhidian.getPdfContent(Zhidian.java:16)
at readPdf.Zhidian.main(Zhidian.java:8)
Caused by: java.io.IOException: CreateProcess error=2, ?????????
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 5 more
Exception in thread "main" java.lang.NullPointerException
at readPdf.Zhidian.getPdfContent(Zhidian.java:21)
at readPdf.Zhidian.main(Zhidian.java:8)