LibreOffice Java - 无法将uno.Any转换为XPropertySet

时间：2017-11-04 22:32:38

标签： java libreoffice

我正在尝试使用Java与LibreOffice API进行交互。目前，我正在为诸如检索对象，插入文本等操作创建帮助程序类。但是，我在将验证应用于电子表格文档时遇到问题。我的功能如下：

 public static void applyValidation(int x1, int y1,  int x2, int y2, XSpreadsheet sheet, ValidationType type) throws UnknownPropertyException, WrappedTargetException, IndexOutOfBoundsException, IllegalArgumentException, PropertyVetoException {
        XCellRange range = sheet.getCellRangeByPosition(x1, y1, x2, y2);
        XPropertySet propSet = UnoRuntime.queryInterface(XPropertySet.class, range);

        XPropertySet validProp =(XPropertySet) propSet.getPropertyValue("Validation");
        validProp.setPropertyValue("ShowErrorMessage", new Boolean(true));
        validProp.setPropertyValue("ErrorMessage", "Please enter a valid time");
        validProp.setPropertyValue("ErrorAlertStyle", ValidationAlertStyle.INFO);



         propSet.setPropertyValue("Validation", validProp);

  }

它是在OpenOffice Developer's Guide中提供的示例之后建模的。

我试图从测试类中调用该方法：

@Test
public void test() {
try {
XComponentLoader loader = LibreBootstrapper.getLoader();
    assertTrue( (loader instanceof XComponentLoader));
    XSpreadsheetDocument doc = SpreadsheetHelper.getSpreadsheetDoc(loader);
    assertTrue( (doc instanceof XSpreadsheetDocument));
    XSpreadsheet sheet = SpreadsheetHelper.getSheetByIndex(SpreadsheetHelper.getSheets(doc), 0);
    SpreadsheetHelper.insertIntoCell(0, 0, sheet, 400);
    SpreadsheetHelper.insertIntoCell(1, 0, sheet, 300);
    SpreadsheetHelper.insertFormula(2, 0, sheet, "=SUM(A1:B1)");
    SpreadsheetHelper.insertIntoCell(2, 2, sheet, "Hello World!");
    SpreadsheetHelper.setProperty(0, 0, 8, 10, sheet, "CellStyle", "Heading 1");
    int formatCode = SpreadsheetHelper.getFormatCode(doc, NumberFormat.TIME);   
    SpreadsheetHelper.setProperty(0, 0, 8, 10, sheet, "NumberFormat", formatCode);
    SpreadsheetHelper.applyValidation(0, 0, 8, 10, sheet,  ValidationType.TIME);

} catch (Exception e) {

    e.printStackTrace();
}

}

但是，我收到以下错误：

  java.lang.ClassCastException: com.sun.star.uno.Any cannot be cast to com.sun.star.beans.XPropertySet

具有以下堆栈

    at edu.cmu.office.SpreadsheetHelper.applyValidation(SpreadsheetHelper.java:125)
    at HelperTests.test(HelperTests.java:32)
    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:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207)

我甚至试过从示例中复制和粘贴代码（链接到上面）但仍然收到相同的错误。

我对LibreOffice API不太熟悉;任何帮助将不胜感激。

编辑：

实际抛出错误的行如下：

            XPropertySet validProp =(XPropertySet) propSet.getPropertyValue("Validation");

即使直接从示例中复制和粘贴，我也会收到同样的错误：

      public static void applyValidation(int x1, int y1,  int x2, int y2, XSpreadsheet sheet, ValidationType type) throws UnknownPropertyException, WrappedTargetException, IndexOutOfBoundsException, IllegalArgumentException, PropertyVetoException {

//          XCellRange range = sheet.getCellRangeByPosition(x1, y1, x2, y2);
//          XPropertySet propSet = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class, range);
//
//          XPropertySet validProp =(XPropertySet) propSet.getPropertyValue("Validation");
//          validProp.setPropertyValue("ShowErrorMessage", new Boolean(true));
//          validProp.setPropertyValue("ErrorMessage", "Please enter a valid time");
//          validProp.setPropertyValue("ErrorAlertStyle", ValidationAlertStyle.INFO);       
//
//           propSet.setPropertyValue("Validation", validProp);
//           
             // --- Data validation ---
             com.sun.star.table.XCellRange xCellRange = sheet.getCellRangeByName("A7:C7");
             com.sun.star.beans.XPropertySet xCellPropSet = (com.sun.star.beans.XPropertySet)
                 UnoRuntime.queryInterface(com.sun.star.beans.XPropertySet.class, xCellRange);

             // validation properties
             com.sun.star.beans.XPropertySet xValidPropSet = (com.sun.star.beans.XPropertySet)
                 xCellPropSet.getPropertyValue("Validation");
             xValidPropSet.setPropertyValue("Type", com.sun.star.sheet.ValidationType.DECIMAL);
             xValidPropSet.setPropertyValue("ShowErrorMessage", new Boolean(true));
             xValidPropSet.setPropertyValue("ErrorMessage", "This is an invalid value!");
             xValidPropSet.setPropertyValue("ErrorAlertStyle", com.sun.star.sheet.ValidationAlertStyle.STOP);

             // condition
             com.sun.star.sheet.XSheetCondition xCondition = (com.sun.star.sheet.XSheetCondition)
                 UnoRuntime.queryInterface(com.sun.star.sheet.XSheetCondition.class, xValidPropSet);
             xCondition.setOperator(com.sun.star.sheet.ConditionOperator.BETWEEN);
             xCondition.setFormula1("0.0");
             xCondition.setFormula2("5.0");

             // apply on cell range
             xCellPropSet.setPropertyValue("Validation", xValidPropSet);

      }

在以下一行：

             com.sun.star.beans.XPropertySet xValidPropSet = (com.sun.star.beans.XPropertySet)
             xCellPropSet.getPropertyValue("Validation");

1 个答案:

答案 0 :(得分：1)

看起来你忘了把它正确地扔掉。代码应该像示例：

<amp-ad
    layout="responsive"   
    height="336"
    width="280"  
    type="adsense" 
    data-ad-format='auto'
    data-ad-client="ca-pub-12345678xx"  
    data-ad-slot="9876xx"
></amp-ad>

......而不是：

XPropertySet xCellPropSet = (XPropertySet)
    UnoRuntime.queryInterface(XPropertySet.class, xCellRange);

修改：

显然，这个例子是不正确的。这是工作代码：

XPropertySet propSet = UnoRuntime.queryInterface(XPropertySet.class, range);

使用Java和UNO时，这些类型的问题很烦人。我更喜欢Python和UNO，其中一个原因是因为XPropertySet validProp = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, propSet.getPropertyValue("Validation")); 不是必需的。

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