将 Docx 文件转换为图像

Question

我要将 Word 文档 (.docx) 转换为图像，所以我使用 aspose.word.jar！ 问题是我是这项工作的新手，并且使用我的代码出现错误。我的代码部分是：

public class NewClass {
   public static void main(String[] args){
       new NewClass().generateImages("D:\\Net Beans Work Space\\Text to Image\\Doc1.docx");
   }

   public void generateImages(final String sourcePath) {  
      try {  
           Document doc = new Document(sourcePath);  
           ImageSaveOptions options = new ImageSaveOptions(SaveFormat.JPEG);  
           options.setJpegQuality(100);  
           options.setResolution(100);  

           for (int i = 0; i < doc.getPageCount(); i++) {  
                String imageFilePath = sourcePath + "_output_" + i + ".jpeg";  
                options.setPageIndex(i);  
                doc.save(imageFilePath, options);  
           }  
      } catch (Exception e) {  
           e.printStackTrace();  
      }  
 }  
} 

好吧，我是新手，所以我在线获取了此代码部分并根据我的要求对其进行编辑！ 问题出在打印堆栈跟踪中！ 我已经用谷歌搜索了几个小时，但没有得到任何解决方案，以前有人可以完成这项工作！ 是不是我做错了，谁能帮帮我！

java.lang.NullPointerException
    at asposewobfuscated.hh.a(GdiRenderer.java:176) at asposewobfuscated.hh.a(GdiRenderer.java:176)
    at asposewobfuscated.s.a(ApsGlyphs.java:48)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.z.a(ApsPage.java:75)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.hh.a(GdiRenderer.java:49)
    at com.aspose.words.apd.a(SaveToImageHelper.java:129)
    at com.aspose.words.apd.a(SaveToImageHelper.java:94)
    at com.aspose.words.apd.a(SaveToImageHelper.java:71)
    at com.aspose.words.uz.F(ImagingWriter.java:79)
    at com.aspose.words.uz.a(ImagingWriter.java:38)
    at com.aspose.words.Document.a(Document.java:1345)
    at com.aspose.words.Document.save(Document.java:738)
    at NewClass.generateImages(NewClass.java:31)
    at NewClass.main(NewClass.java:18)
java.lang.NullPointerException
    at asposewobfuscated.hh.a(GdiRenderer.java:176)
    at asposewobfuscated.s.a(ApsGlyphs.java:48)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.z.a(ApsPage.java:75)
    at asposewobfuscated.p.a(ApsCompositeNode.java:22)
    at asposewobfuscated.m.a(ApsCanvas.java:18)
    at asposewobfuscated.hh.a(GdiRenderer.java:49)
    at com.aspose.words.apd.a(SaveToImageHelper.java:129)
    at com.aspose.words.apd.a(SaveToImageHelper.java:94)
    at com.aspose.words.apd.a(SaveToImageHelper.java:71)
    at com.aspose.words.uz.F(ImagingWriter.java:79)
    at com.aspose.words.uz.a(ImagingWriter.java:38)
    at com.aspose.words.Document.a(Document.java:1345)
    at com.aspose.words.Document.save(Document.java:738)
    at NewClass.generateImages(NewClass.java:31)
    at NewClass.main(NewClass.java:18)
BUILD SUCCESSFUL (total time: 9 seconds)

Answer 1

我已经测试了您的代码，它对我来说运行良好。请确保您使用的是最新版本的Aspose.Words for Java。

如果问题仍然存在，请分享您尝试转换的 word 文档。您还可以使用我们的support forums 安全地上传您的文件。

披露：我是 Aspose 的开发人员。

Answer 2

由于 docx 只是一种 zip 格式，您可以使用 Zip FileSystem 将图像文件复制到外部。

    URI docxUri = file.toURI();
    docxUri = new URI("jar:" + docxUri.toString()); // "jar:file://..."

    final Path targetDirPath = Paths.get("C:/test");
    Files.createDirectories(targetDirPath);

    Map<String, String> zipProperties = new HashMap<>();
    zipProperties.put("encoding", "UTF-8");
    try (FileSystem zipFS = FileSystems.newFileSystem(docxUri,
            zipProperties)) {
        Path mediaPath = zipFS.getPath("/word/media");
        Files.walkFileTree(mediaPath, new SimpleFileVisitor<Path>() {

            @Override
            public FileVisitResult visitFile(Path path,
                    BasicFileAttributes attributes) throws IOException {
                String name = path.getFileName().toString();
                Path imgPath = Paths.get(targetDirPath.toString(), name);
                Files.copy(path, imgPath, StandardCopyOption.REPLACE_EXISTING);
                return super.visitFile(path, attributes);
            }
        });
    }

这会复制压缩文件夹/word/media中的所有媒体文件。

当然，您没有元数据，也没有关联图像文件的上下文。但它是文件的一个很好的用法。

Answer 3

代码没问题 但是如何将 .docx 文件作为用户的输入。

代码本身已经预定义了要转换的doc文件的路径

应该对代码进行哪些更改，以便应用程序可以从用户那里获取文档文件，然后生成其图像

我的班级：

import com.aspose.words.Document;
import com.aspose.words.ImageSaveOptions;
import com.aspose.words.SaveFormat;

/**
 * Created by white
 */
public class Program {

    public static void main(String args[]) throws Exception {


        new Program().generateImages("E:\\pro2\\Document.docx");

    }

    public void generateImages(final String sourcePath) {
        try {
            Document doc = new Document(sourcePath);
            ImageSaveOptions options = new ImageSaveOptions(SaveFormat.JPEG);
            options.setJpegQuality(100);
            options.setResolution(100);

            for (int i = 0; i < doc.getPageCount(); i++) {
                String imageFilePath = sourcePath + "_output_" + i + ".jpg";

                options.setPageIndex(i);

                doc.save(imageFilePath, options);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}