0

目标：创建一个简单的 docx 文件并将其转换为 PDF。

import org.apache.poi.xwpf.converter.pdf.PdfConverter;
import org.apache.poi.xwpf.converter.pdf.PdfOptions;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

import java.io.*;

public class doc3 {
    public static void main(String[] args) throws Exception {
        XWPFDocument document = new XWPFDocument();
        //Start - Added Styles in word document
        XWPFStyles styles = document.createStyles();
        styles.setSpellingLanguage("English");
        CTFonts def = CTFonts.Factory.newInstance();
        styles.setDefaultFonts(def);
        //End
        XWPFParagraph tmpParagraph = document.createParagraph();
        XWPFRun tmpRun = tmpParagraph.createRun();
        tmpRun.setText("Hellow World");
        tmpRun.setFontSize(18);
        File inFile = new File("test.docx");
        FileOutputStream out = new FileOutputStream(inFile);
        document.write(out);
        PdfOptions options = PdfOptions.create();
        //The error occurs in the below line. 
        PdfConverter.getInstance().convert(document,out,options);
        }
    }

我现在收到的错误如下：

    Exception in thread "main" org.apache.poi.xwpf.converter.core.XWPFConverterException: java.lang.NullPointerException
    at org.apache.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:70)
    at org.apache.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:38)
    at org.apache.poi.xwpf.converter.core.AbstractXWPFConverter.convert(AbstractXWPFConverter.java:45)
    at be.quodlibet.boxable.doc3.main(doc3.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.lang.NullPointerException
    at org.apache.poi.xwpf.converter.core.MasterPageManager.visitHeadersFooters(MasterPageManager.java:200)
    at org.apache.poi.xwpf.converter.core.MasterPageManager.addSection(MasterPageManager.java:180)
    at org.apache.poi.xwpf.converter.core.MasterPageManager.compute(MasterPageManager.java:127)
    at org.apache.poi.xwpf.converter.core.MasterPageManager.initialize(MasterPageManager.java:90)
    at org.apache.poi.xwpf.converter.core.XWPFDocumentVisitor.visitBodyElements(XWPFDocumentVisitor.java:232)
    at org.apache.poi.xwpf.converter.core.XWPFDocumentVisitor.start(XWPFDocumentVisitor.java:199)
    at org.apache.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:56)
    ... 8 more

我不确定我是否遗漏了 PDFOption 中的某些内容或其他内容。任何帮助将不胜感激。

更新：共享 POM 文件：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">


    <parent>
        <groupId>org.sonatype.oss</groupId>
        <artifactId>oss-parent</artifactId>
        <version>9</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.github.dhorions</groupId>
    <artifactId>boxable</artifactId>
    <version>1.4</version>
    <packaging>jar</packaging>

    <name>Boxable, a high-level API to creates table on top of Apache Pdfbox</name>
    <description>Easily creates tables in pdf.</description>

    <dependencies>

        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.0</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.10</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>18.0</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.2</version>
            <scope>compile</scope>
        </dependency>

        <!-- Test Dependencies -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.12</version>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>3.12</version>
        </dependency>

        <dependency>
            <groupId>fr.opensagres.xdocreport</groupId>
            <artifactId>org.apache.poi.xwpf.converter.pdf</artifactId>
            <version>1.0.6</version>
        </dependency>

        <dependency>
            <groupId>com.lowagie</groupId>
            <artifactId>itext</artifactId>
            <version>2.1.7</version>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.12</version>
        </dependency>

        <dependency>
            <groupId>fr.opensagres.xdocreport</groupId>
            <artifactId>fr.opensagres.xdocreport.document.docx</artifactId>
            <version>1.0.6</version>
        </dependency>

        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
            <scope>test</scope>
        </dependency>

    </dependencies>
    <distributionManagement>
        <snapshotRepository>
            <id>ossrh</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
        </snapshotRepository>
    </distributionManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <id>attach-sources</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <compilerArguments>
                        <bootclasspath>${sun.boot.class.path}${path.separator}${java.home}/lib/jfxrt.jar</bootclasspath>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>external.atlassian.jgitflow</groupId>
                <artifactId>jgitflow-maven-plugin</artifactId>
                <version>1.0-m4.3</version>
                <configuration>
                    <enableSshAgent>true</enableSshAgent>
                    <pushReleases>true</pushReleases>
                    <pushFeatures>true</pushFeatures>
                    <pushHotfixes>true</pushHotfixes>
                    <autoVersionSubmodules>true</autoVersionSubmodules>
                    <allowUntracked>true</allowUntracked>
                    <allowSnapshots>true</allowSnapshots>
                    <noDeploy>true</noDeploy>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.sonatype.plugins</groupId>
                <artifactId>nexus-staging-maven-plugin</artifactId>
                <version>1.6.3</version>
                <extensions>true</extensions>
                <configuration>
                    <serverId>ossrh</serverId>
                    <nexusUrl>https://oss.sonatype.org/</nexusUrl>
                    <autoReleaseAfterClose>true</autoReleaseAfterClose>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-gpg-plugin</artifactId>
                <version>1.5</version>
                <executions>
                    <execution>
                        <id>sign-artifacts</id>
                        <phase>verify</phase>
                        <goals>
                            <goal>sign</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <executions>
                    <execution>
                        <id>attach-javadocs</id>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <properties>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>
</project>
4

1 回答 1

0

我也面临同样的问题。

而是创建将其转换为 PDF 的新文件 doc 文件。

只需做一件事，从 MS Word 创建一个新文件作为模板。现在尝试通过 Apache POI 库从中创建文件。

XWPFDocument document = new XWPFDocument(new FileInputStream("template.docx"));

//在其中创建并添加内容

FileOutputStream out = new FileOutputStream("newDocFileName.docx");
document.write(out);
out.close();
document.close();

现在尝试转换它。你不会得到这个空指针异常。

于 2020-06-17T04:56:04.850 回答