java.io.IOException:无法运行程序"...":java.io.IOException:error = 2，没有这样的文件或目录

问题描述

我需要从Java执行外部程序(使用libreoffice将 fodt 文件转换为 pdf 时，确实会发生这种情况)我知道程序所需的精确命令行:

I need to execute an external program from Java(to convert a fodt file to pdf using libreoffice, it so happens)I know the precise command-line I need for the program:

/usr/bin/libreoffice --headless --convert-to pdf:'writer_pdf_Export' --outdir /home/develop/tomcat/mf/ROOT/private/docs/0/ /home/develop/tomcat/mf/ROOT/private/docs/0/35_invoice.fodt

，并且在命令行中可以完美运行.但是使用 ProcessBuilder

and that works perfectly from the command line.But it does not work in Java using a ProcessBuilder:

java.io.IOException: Cannot run program "/usr/bin/libreoffice --headless --convert-to pdf:'writer_pdf_Export' --outdir /home/develop/tomcat/mf/ROOT/private/docs/0 /home/develop/tomcat/mf/ROOT/private/docs/0/35_invoice.fodt": java.io.IOException: error=2, No such file or directory

我尝试了一些不同的方法，但没有成功.这是最后一次测试的示例

I tried some different approaches without success.Here is a sample of the last test

        List<String> command = new ArrayList<String>();
        command.add("/usr/bin/libreoffice");
        command.add("--headless");
        command.add("--convert-to pdf:'writer_pdf_Export' --outdir " + getDestinationDirectory(order) + " " + getInvoiceFilename() + ".fodt");

        ProcessBuilder builder = new ProcessBuilder(command);

        Process process = null;
        try {
            process = builder.start();
        } catch (IOException ex) {
            Logger.getLogger(Documents.class.getName()).log(Level.SEVERE, null, ex);
        }
        InputStream is = process.getInputStream();
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br = new BufferedReader(isr);
        String line;
        try {
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException ex) {
            Logger.getLogger(Documents.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("Program terminated!");

推荐答案

尝试一下(保持简单)...

Try this (keep it simple) ...

Process p = Runtime.getRuntime().exec("/usr/bin/libreoffice --headless --convert-to pdf:'writer_pdf_Export' --outdir "+ getDestinationDirectory(order)+" "+getInvoiceFilename()+".fodt");

完全...

    Process process = null;
    try {
            process = Runtime.getRuntime().exec("/usr/bin/libreoffice --headless --convert-to pdf:'writer_pdf_Export' --outdir "+ getDestinationDirectory(order)+" "+getInvoiceFilename()+".fodt");
    } catch (IOException ex) {
        Logger.getLogger(Documents.class.getName()).log(Level.SEVERE, null, ex);
    }
    BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line;
    try {
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
    } catch (IOException ex) {
        Logger.getLogger(Documents.class.getName()).log(Level.SEVERE, null, ex);
    }
    br.close();
    System.out.println("Program terminated!");

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