通过 Java 管理 Microsoft^® Visio 文件元数据

使用服务器端 Java API 查看、添加、更新、删除或提取内置和自定义 Visio 文件属性。

Java Visio API 支持标题、作者姓名、文档统计等系统定义（内置）属性以及名称-值对形式的用户定义（自定义）属性的管理。有 Diagram 类加载文件，以及页面集合处理页面的集合以及页面类用于表示单个页面。与这些类、文档属性一起，customprops 使元数据管理的过程变得简单。

为了管理系统定义的属性，API 提供文档属性 , 程序员可以轻松访问内置属性并更新其值。

	// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-Java
	// The path to the documents directory.
	String dataDir = Utils.getDataDir(AutoFitShapesInVisio.class);
	// load a Visio diagram
	Diagram diagram = new Diagram(dataDir + "BFlowcht.vsdx");

	//// Display Visio version and document modification time at different stages
	System.out.println(diagram.getVersion());
	System.out.println(diagram.getDocumentProps().getBuildNumberCreated());
	System.out.println(diagram.getDocumentProps().getBuildNumberEdited());
	System.out.println(diagram.getDocumentProps().getTimeCreated());
	System.out.println(diagram.getDocumentProps().getTimeEdited());
	System.out.println(diagram.getDocumentProps().getTimePrinted());
	System.out.println(diagram.getDocumentProps().getTimeSaved());
	System.out.println(diagram.getDocumentProps().getCustomProps().getCount());

为了管理用户定义的属性，API 提供自定义道具，开发人员可以轻松访问已添加的属性以及添加新属性。为了添加自定义属性， [添加方法]( https://apireference.aspose.com/diagram/java/com.aspose.diagram/custompropcollection#add(com.aspose.diagram.CustomProp) 添加属性并返回新属性的引用作为自定义道具目的。 CustomProp 类用于检索文档属性的名称、值和类型，如姓名 , 自定义值 , 财产类型枚举值。

	// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-Java
	// The path to the documents directory.
	String dataDir = Utils.getDataDir(AutoFitShapesInVisio.class);

	// Load a Visio diagram
	Diagram diagram = new Diagram(dataDir + "Drawing1.vsdx");

	//// Get CustomProperties of diagram
	CustomPropCollection customProperties = diagram.getDocumentProps().getCustomProps();
	//Set property of CustomProp
	CustomProp customProp = new CustomProp();
	customProp.setPropType(PropType.STRING);
	customProp.getCustomValue().setValueString ("Test");
	//Add CustomProp to Collection
	customProperties.add(customProp);

	// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-Java
	// The path to the documents directory.
	String dataDir = Utils.getDataDir(AutoFitShapesInVisio.class);

	// Load a Visio diagram
	Diagram diagram = new Diagram(dataDir + "Drawing1.vsdx");

	//// Get CustomProperties of diagram
	CustomPropCollection customProperties = diagram.getDocumentProps().getCustomProps();
	//Remove CustomProp
	for (int i = 0; i < customProperties.getCount(); i++)
	{
	CustomProp customProp = customProperties.get(i);
	if (customProp.getName()== "Test")
	{
	customProperties.remove(customProp);
	}
	}