Question

我正在尝试从文件系统上的html文件中读取由phantomjs创建的pdf。我做了以下事情。

       process = Runtime.getRuntime().exec(phantomLocation + scriptLocation + inputFile + " " + destinationFileString);
       process.waitFor();

我指定了phantomLocation，js脚本位置，inputHTML和destinationFileString（要生成和提供的pdf）。

我正在编写以下servlet代码来读取生成的pdf并作为响应发送。

        InvokePhantom phantom = new InvokePhantom(inputHTMLFileName, destinationFile);
        process.create();//call the above piece of code
                //Set the response headers
                response.setContentType("application/pdf");
                String headerKey = "Content-Disposition";
                String headerValue = String.format("attachment; filename=\"%s\"", attchmentName);
                response.setHeader(headerKey, headerValue);

                //For debugging
                File file = new File(destinationFile);
                System.out.println("destinationFile exists = " + file.exists());

                //Write to outputStream
                fileInputStream = new FileInputStream(destinationFile);
                outputStream = response.getOutputStream();
                byte[] buffer = new byte[1024];
                int bytesRead = -1;
                while ((bytesRead = fileInputStream.read(buffer)) != -1) {
                    outputStream.write(buffer, 0, bytesRead);
                }
                outputStream.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (writer != null) {
                    writer.close();
                }
                if (outputStream != null) {
                    outputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

但是phantomjs生成的pdf文件不完整。从命令行phantomjs运行时正确创建pdf（来自相同的html）。但是当从java代码调用它时，它无法正常工作。如何解决这个问题？

Answer 1

似乎问题是你正在尝试将参数作为单个String执行。您应该使用Runtime.exec(String[] comand)这样的内容：

String[] cmdArray = new String[]{phantomLocation,scriptLocation,inputFile,destinationFileString};
Process process = Runtime.getRuntime().exec(cmdArray);
process.waitFor();

希望这有帮助。

Runtime.getRuntime（）。exec（）未按预期工作

1 个答案: