Apache POI set Excel chart title

问题:

I'm creating an Excel workbook from scratch. One of the sheets contains a chart, and I want to set the chart title.

Apache POI has a setChartTitle method on HSSFChart, but neither XSSFChart nor the format-agnostic Chart have methods to set the chart title. Since I need to create .xlsx files this is a problem for me.

After much poking around in POI code and OOXML specifications I managed to come up with this code for setting the title on a newly created Chart:

    if (chart instanceof XSSFChart) {         XSSFChart xchart = (XSSFChart) chart;         CTChart ctChart = xchart.getCTChart();         CTTitle title = ctChart.addNewTitle();         CTTx tx = title.addNewTx();         CTTextBody rich = tx.addNewRich();         rich.addNewBodyPr();  // body properties must exist, but can be empty         CTTextParagraph para = rich.addNewP();         CTRegularTextRun r = para.addNewR();         r.setT("My chart title");     } 

This seems to work - I can load the resulting file in Excel 2013 and the chart is there with the correct title.

Is there an easier way to do this? What gotchas would I need to look out for when changing a chart title in a workbook created in Excel?

文章来源: Apache POI set Excel chart title