在Groovy中打开现有的Excel文件

如何在Groovy中打开现有的Excel文件，以便我可以开始操作它？

Answer 1

下面是从Groovy使用POI的完整示例：

@Grab( 'org.apache.poi:poi:3.9' ) import static org.apache.poi.ss.usermodel.CellStyle.* import static org.apache.poi.ss.usermodel.IndexedColors.* import org.apache.poi.hssf.usermodel.HSSFWorkbook // Make a workbook from scratch new HSSFWorkbook().with { workbook -> def styles = [ LIGHT_BLUE, LIGHT_GREEN, LIGHT_ORANGE ].collect { color -> createCellStyle().with { style -> fillForegroundColor = color.index fillPattern = SOLID_FOREGROUND style } } createSheet( 'Output' ).with { sheet -> (0..4).each { rownum -> createRow( rownum ).with { row -> (0..4).each { colnum -> createCell( colnum ).with { cell -> setCellValue( "[$colnum,$rownum]" ) cellStyle = styles[ ( ( rownum * 5 ) + colnum ) % styles.size() ] } } } } new File( '/tmp/test.xls' ).withOutputStream { os -> write( os ) } } } // Open the spreadsheet, change cell 3, 3 to 'WOO' and save it back out to a new file new File( '/tmp/test.xls' ).withInputStream { ins -> new HSSFWorkbook( ins ).with { workbook -> getSheetAt( 0 ).with { sheet -> getRow( 2 ).getCell( 2 ).setCellValue( 'WOO' ) } new File( '/tmp/test2.xls' ).withOutputStream { os -> write( os ) } } }