Spire.PDF for Java 8.8.3 已发布。本次更新新增支持创建无序列表，且调整了签名时间戳的内部安全性。同时该版本还增强了 PDF 到 Tiff 的转换。此外，一些已知问题也得到了修复。详情请阅读以下内容。

新功能:

• 支持创建无序列表。

public void DrawMarker(PdfUnorderedMarkerStyle style, String outputFile) {
    PdfDocument doc = new PdfDocument();
    PdfNewPage page = (PdfNewPage) doc.getPages().add();
    PdfMarker marker = new PdfMarker(style);
    String listContent = "Data Structure\n"
            + "Algorithm\n"
            + "Computer Newworks\n"
            + "Operating System\n"
            + "C Programming\n"
            + "Computer Organization and Architecture";
    PdfUnorderedList list = new PdfUnorderedList(listContent);
    list.setIndent(2);
    list.setTextIndent(4);
    list.setMarker(marker);
    list.draw(page, 100, 100);
    doc.saveToFile(outputFile, FileFormat.PDF);
    doc.close();
}
public void PdfMarker_CustomImage() throws Exception {
    String outputFile = "PdfMarker_CustomImage.pdf";
    String inputFile_Img = "sample.png";
    PdfDocument doc = new PdfDocument();
    PdfNewPage page = (PdfNewPage) doc.getPages().add();
    PdfMarker marker = new PdfMarker(PdfUnorderedMarkerStyle.Custom_Image);
    marker.setImage(PdfImage.fromFile(inputFile_Img));
    String listContent = "Data Structure\n"
            + "Algorithm\n"
            + "Computer Newworks\n"
            + "Operating System\n"
            + "C Programming\n"
            + "Computer Organization and Architecture";
    PdfUnorderedList list = new PdfUnorderedList(listContent);
    list.setIndent(2);
    list.setTextIndent(4);
    list.setMarker(marker);
    list.draw(page, 100, 100);
    doc.saveToFile(outputFile, FileFormat.PDF);
    doc.close();
}
public void PdfMarker_CustomTemplate() throws Exception {
    String outputFile = "PdfMarker_CustomTemplate.pdf";
    String inputFile_Img = "sample.png";
    PdfDocument doc = new PdfDocument();
    PdfNewPage page = (PdfNewPage) doc.getPages().add();
    PdfMarker marker = new PdfMarker(PdfUnorderedMarkerStyle.Custom_Template);
    PdfTemplate template = new PdfTemplate(210, 210);
    marker.setTemplate(template);
    template.getGraphics().drawImage(PdfImage.fromFile(inputFile_Img), 0, 0);
    String listContent = "Data Structure\n"
            + "Algorithm\n"
            + "Computer Newworks\n"
            + "Operating System\n"
            + "C Programming\n"
            + "Computer Organization and Architecture";
    PdfUnorderedList list = new PdfUnorderedList(listContent);
    list.setIndent(2);
    list.setTextIndent(4);
    list.setMarker(marker);
    list.draw(page, 100, 100);
    doc.saveToFile(outputFile, FileFormat.PDF);
    doc.close();
}
public void PdfMarker_CustomString() throws Exception {
    String outputFile = "PdfMarker_CustomString.pdf";
    PdfDocument doc = new PdfDocument();
    PdfNewPage page = (PdfNewPage) doc.getPages().add();
    PdfMarker marker = new PdfMarker(PdfUnorderedMarkerStyle.Custom_String);
    marker.setText("AAA");
    String listContent = "Data Structure\n"
            + "Algorithm\n"
            + "Computer Newworks\n"
            + "Operating System\n"
            + "C Programming\n"
            + "Computer Organization and Architecture";
    PdfUnorderedList list = new PdfUnorderedList(listContent);
    list.setIndent(2);
    list.setTextIndent(4);
    list.setMarker(marker);
    list.draw(page, 100, 100);
    doc.saveToFile(outputFile, FileFormat.PDF);
    doc.close();

功能调整:

• 调整签名时间戳的内部安全性。

问题修复:

• 修复了转换PDF到Tiff, 程序运行时间长且内存消耗大的问题。
• 修复了加载PDF文档，程序抛异常“Read failure"。

https://www.e-iceblue.cn/Downloads/Spire-PDF-JAVA.html