XDocReport 无法在生成的文档中显示两个图像

Question

我在模板中插入了两张图片："logo" 和 "background" 但只有背景图片出现在模板中。

我创建 ImageProdiver

private IImageProvider createImageProvider(IXDocReport ixDocReport, String fieldName, Blob image) {
    FieldsMetadata metadata = ixDocReport.createFieldsMetadata();
    metadata.addFieldAsImage( fieldName);
    ixDocReport.setFieldsMetadata(metadata);
    InputStream inputStream = null;

    try {
        inputStream = image.getBinaryStream();
        IImageProvider logo = new ByteArrayImageProvider(inputStream);
        logo.setUseImageSize(true);
        logo.setResize(true);
        inputStream.close();
        return logo;
    } catch (SQLException | IOException e) {
        throw new GeneralException("Error reading logo");
    } finally {
        if(inputStream != null) {
            IOUtils.closeQuietly(inputStream);
        }
    }
}

创建两个Image provider

IImageProvider logo = createImageProdider(report, "logo", blobimage));
IImageProvider background = createImageProdider(report, "logo", blobimagebacground));

并插入构建器中的上下文

context = this.report.createContext();
context.put("logo", logo);
context.put("background", background);

生成文档后，只存在背景图片。

不明白为什么会出现这个问题，为什么只显示一张图片

如何解决这个问题？

Answer 1

这是因为您将 FieldsMetadata 设置为报告两次。您需要创建一个 FieldsMetadata metadata = ixDocReport.createFieldsMetadata() 并向其中添加两个图像。敌人示例：

 FieldsMetadata metadata = new FieldsMetadata();
 metadata.addFieldAsImage("chart1");
 metadata.addFieldAsImage("chart2");
 report.setFieldsMetadata(metadata);

 IImageProvider logo = new FileImageProvider(new File("path/to/image1"), true);
 context.put("chart1", logo);

 IImageProvider logo2 = new FileImageProvider(new File("path/to/image2"), true);
 context.put("chart2", logo2);

XDocReport 无法在生成的文档中显示两个图像

XDocReport can't display two image in generated document

java

velocity

xdocreport