Documents4j exception when converting docx to pdf

[speedp...@gmail.com]

Hi I am using the following code to convert DOCX to PDF.

public class ConvertToPdf {

    public static void main(String[] args) {

        File inputdocxfile = new File(System.getProperty("user.dir") + "/src/test/resources/files/output/"

                + "CustomerOutput.docx");

        File outputpdffile = new File(System.getProperty("user.dir") + "/src/test/resources/files/output/"

                + "CustomerOutputdocx.pdf");

        IConverter converter = LocalConverter.builder().baseFolder(new File(System.getProperty("java.io.tmpdir")))

                .workerPool(20, 25, 2, TimeUnit.SECONDS).processTimeout(5, TimeUnit.SECONDS).build();

        Future<Boolean> conversion = converter.convert(inputdocxfile).as(DocumentType.DOCX).to(outputpdffile)

                .as(DocumentType.PDF).prioritizeWith(1000).schedule();

    }

}

And I have imported these dependencies in  my POM file.

<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-api</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-local</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-util-conversion</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-transformer</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-util-all</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-transformer-msoffice-word</artifactId>
<version>1.0.0</version>
</dependency>

 I end up with this exception.

Exception in thread "main" java.lang.IllegalStateException: class com.documents4j.conversion.msoffice.MicrosoftWordBridge could not be created by a (File, long, TimeUnit) constructor
at com.documents4j.conversion.ExternalConverterDiscovery.make(ExternalConverterDiscovery.java:32)
at com.documents4j.conversion.ExternalConverterDiscovery.makeAll(ExternalConverterDiscovery.java:42)
at com.documents4j.conversion.ExternalConverterDiscovery.loadConfiguration(ExternalConverterDiscovery.java:85)
at com.documents4j.conversion.DefaultConversionManager.<init>(DefaultConversionManager.java:22)
at com.documents4j.job.LocalConverter.makeConversionManager(LocalConverter.java:74)
at com.documents4j.job.LocalConverter.<init>(LocalConverter.java:47)
at com.documents4j.job.LocalConverter$Builder.build(LocalConverter.java:162)
at com.apakgroup.docgen.converters.ConvertToPdf.main(ConvertToPdf.java:21)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at com.documents4j.conversion.ExternalConverterDiscovery.make(ExternalConverterDiscovery.java:30)
... 7 more
Caused by: java.lang.NoSuchFieldError: NULL_OUTPUT_STREAM
at org.zeroturnaround.exec.ProcessExecutor.redirectOutput(ProcessExecutor.java:449)
at org.zeroturnaround.exec.ProcessExecutor.<init>(ProcessExecutor.java:159)
at com.documents4j.conversion.AbstractExternalConverter.makePresetProcessExecutor(AbstractExternalConverter.java:43)
at com.documents4j.conversion.AbstractExternalConverter.runNoArgumentScript(AbstractExternalConverter.java:59)
at com.documents4j.conversion.msoffice.AbstractMicrosoftOfficeBridge.runNoArgumentScript(AbstractMicrosoftOfficeBridge.java:51)
at com.documents4j.conversion.msoffice.AbstractMicrosoftOfficeBridge.tryStart(AbstractMicrosoftOfficeBridge.java:34)
at com.documents4j.conversion.msoffice.MicrosoftWordBridge.startUp(MicrosoftWordBridge.java:42)
at com.documents4j.conversion.msoffice.MicrosoftWordBridge.<init>(MicrosoftWordBridge.java:37)
... 12 more
Exception in thread "Shutdown hook: com.documents4j.job.LocalConverter" java.lang.NullPointerException
at com.documents4j.job.LocalConverter.shutDown(LocalConverter.java:95)
at com.documents4j.job.ConverterAdapter$ConverterShutdownHook.run(ConverterAdapter.java:125)

If I do not use the below dependency.

<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-transformer-msoffice-word</artifactId>
<version>1.0.0</version>
</dependency> 

I end up with this exception.

 

Exception in thread "main" java.lang.IllegalStateException: The application was started without any registered or class-path discovered converters.
at com.documents4j.conversion.ExternalConverterDiscovery.validate(ExternalConverterDiscovery.java:68)
at com.documents4j.conversion.ExternalConverterDiscovery.loadConfiguration(ExternalConverterDiscovery.java:85)
at com.documents4j.conversion.DefaultConversionManager.<init>(DefaultConversionManager.java:22)
at com.documents4j.job.LocalConverter.makeConversionManager(LocalConverter.java:74)
at com.documents4j.job.LocalConverter.<init>(LocalConverter.java:47)
at com.documents4j.job.LocalConverter$Builder.build(LocalConverter.java:162)
at com.apakgroup.docgen.converters.ConvertToPdf.main(ConvertToPdf.java:21)
Exception in thread "Shutdown hook: com.documents4j.job.LocalConverter" java.lang.NullPointerException
at com.documents4j.job.LocalConverter.shutDown(LocalConverter.java:95)
at com.documents4j.job.ConverterAdapter$ConverterShutdownHook.run(ConverterAdapter.java:125)

 

How do I solve this error?

[Rafael Winterhalter]

Seems to me like a class-path problem. documents4j uses zt-exec which itself uses commons-io 1.4.

You probably have a newer version of commons IO on the class path as the NULL_OUTPUT_STREAM that zt-exec expects is missing.

Can you confirm this?

Cheers, Rafael

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[Deepak Sunanda Prabhakar]

It did work when I used commons-io 1.4. My application was using commons-io 1.3 as it was a version used by one of my other libraries. Thank you very much it solved all my issues.

Cheers,

Deepak

[Deepak Sunanda Prabhakar]

Hi, Does the library need MS Office word to be installed in the machine I am running the converter code?

[Rafael Winterhalter]

Yes, this is described in detail by the documentation. The converting machine requires MS Word which is why there also is a remote server that implements the API.

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[Deepak Sunanda Prabhakar]

How can I access the remote api? Sorry if I am asking dumb questions I am new to Java and your library as well. I and still learning Java. I use maven build automation tool.

[Rafael Winterhalter]

Please refer to the documentation at documents4j.com - You need to run a server on a machine that has MS Word installed. Then you can use the RemoteConverter package to connect to this server for conversion.

2016-01-12 13:39 GMT+01:00 Deepak Sunanda Prabhakar <speedp...@gmail.com>:

How can I access the remote api? Sorry if I am asking dumb questions I am new to Java and your library as well. I and still learning Java. I use maven build automation tool.

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[pj89...@gmail.com]

Hi, I am also facing same problem, though i am using all correct versions like commons-io 1.4 and zt-exec updated new version.

could you please tell where am i missing?

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[Rafael Winterhalter]

As said: you require an actual installation of MS Word.

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[Ken Liu]

Hello, I also encounter the same problem. 

But I'm using newer versions of commons-io (2.7) and zt-exec (1.12). 

Is it because my computer does not have MS Word installed?

Rafael Winterhalter 在 2020年6月5日 星期五凌晨3:52:18 [UTC+8] 的信中寫道：

[Rafael Winterhalter]

Without Office, it can surely not work.

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