我不能捕获控制台输出从Java在FOP进程和我的所有进程它不工作

Question

我用的是eclipse java。我有一个从控制台执行指令方法。复制

public void viewPDF(String cmd){

    try {

        Process p = Runtime.getRuntime().exec( cmd);

        BufferedReader in = new BufferedReader(  
                            new InputStreamReader(p.getInputStream()));  
        String line = null;  
        while ((line = in.readLine()) != null) {  
            System.out.println(line);  
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

如果我在控制台cmd中执行此代码，则一切正常。

C:\fop-0.93\fop -xml C:\document.xml -xsl C:\document.xsl -pdf C:\document.pdf -d

但是如果我尝试从 java 方法执行它不起作用，因为我无法捕获控制台输出。

控制台正在等待，最后我需要停止红色按钮......

有人可以捕获控制台输出吗？使用其他进程我可以（.bat，文件读取等），但捕获fop输出是不可能的。

PD：对不起我的英语…：(

谢谢

Answer 1

最后，我没有从控制台运行fop并捕获其输出，而是制作了一个创建pdf的java程序。

此帖子中的某人：

FopFactory.newInstance（）时出现Fop异常

说

FWIW，FOP只是一个java库。您不想将其作为外部进程执行，只需使用STI API。参见示例code.google.com/p/fop-maven-plugin/source/browse/...有关如何实现的示例。-陀螺无齿轮8月30日21:27

这是我创建的“灵感”类：D其他：

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.stream.StreamSource;

import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;

public class ConstructorFOP {

    private InputStream inputStream;

    public void xmlToPdf(String RUTA_XML, String RUTA_XSL, String RUTA_PDF) {

        try {
            System.out.println("Preparing...");

            // Setup directories
            File baseDir = new File("C:");
            File outDir = new File(baseDir, "out");
            outDir.mkdirs();

            File xmlfile = new File(RUTA_XML);
            File xsltfile = new File(RUTA_XSL);
            File pdffile = new File(RUTA_PDF);

            System.out.println("Input XML : " + xmlfile);
            System.out.println("Input XSL : " + xsltfile);
            System.out.println("OutputPDF : " + pdffile);
            System.out.println("");
            System.out.println("Transforming...");

            // configure fopFactory as desired
            final FopFactory fopFactory = FopFactory.newInstance();

            FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
            // configure foUserAgent as desired

            ByteArrayOutputStream out = new ByteArrayOutputStream();

            TransformerFactory tFactory = TransformerFactory.newInstance();

            Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out);

            // Setup input
            Source src = new StreamSource(xmlfile);

            // Setup Transformer
            Source xsltSrc = new StreamSource(xsltfile);
            Transformer transformer = tFactory.newTransformer(xsltSrc);

            // Make sure the XSL transformation's result is piped through to FOP
            Result res = new SAXResult(fop.getDefaultHandler());
            transformer.transform(src, res);

            ByteArrayOutputStream baos = out;
            inputStream = new ByteArrayInputStream(baos.toByteArray());

            InputStreamAFile(pdffile, inputStream);
        } catch (FOPException e) {
            System.out.println("ERROR DOC 3");
            e.printStackTrace();
        } catch (TransformerConfigurationException e) {
            System.out.println("ERROR DOC 4");
            e.printStackTrace();
        } catch (TransformerFactoryConfigurationError e) {
            System.out.println("ERROR DOC 5");
            e.printStackTrace();
        } catch (TransformerException e) {
            System.out.println("ERROR DOC 6");
            e.printStackTrace();
        }
    }

    public void InputStreamAFile(File pdffile, InputStream entrada) {
        try {
            OutputStream salida = new FileOutputStream(pdffile);
            byte[] buf = new byte[1024];// Actualizado me olvide del 1024
            int len;
            while ((len = entrada.read(buf)) > 0) {
                salida.write(buf, 0, len);
            }
            salida.close();
            entrada.close();
            System.out.println("Se realizo la conversion con exito");
        } catch (FileNotFoundException e) {
            System.out.println("ERROR DOC 1");
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("ERROR DOC 2");
            e.printStackTrace();
        }
    }
}

谢谢