这篇文章主要介绍了Java 中POI 导入EXCEL2003 和EXCEL2007的实现方法的相关资料,希望通过本文大家能掌握理解这种方法,需要的朋友可以参考下
Java 中POI 导入EXCEL2003 和EXCEL2007的实现方法
实现代码:
import java.io.FileInputStream; import java.io.IOException; import java.math.BigDecimal; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; import org.apache.poi.POIXMLException; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.OfficeXmlFileException; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * excel 导入功能 * @author lyq 20150312 * @version 1.0 */ public class ExcelUtils { public List<Object[]> importExcel(String filePath) throws Exception{ List<Object[]> list=new ArrayList<Object[]>(); String fileType=filePath.substring(filePath.lastIndexOf(".")+1); try { if("xls".equalsIgnoreCase(fileType)){ list= importExcel03(filePath); }else{ list= importExcel07(filePath); } } catch(OfficeXmlFileException e){//通过手动修改文件名 引起的异常 比如 3.xlsx 重命名 3.xls 其实际文件类型为xlsx list=importExcel07(filePath); } catch(POIXMLException e){//通过手动修改文件名 引起的异常 比如 3.xls 重命名 3.xlsx 其实际文件类型为xls list=importExcel03(filePath); } return list; } public List<Object[]> importExcel03(String filePath) throws IOException{ FileInputStream in=new FileInputStream(filePath); List<Object[]> list=new ArrayList<Object[]>(); HSSFWorkbook wb=new HSSFWorkbook(in); HSSFSheet sheet = wb.getSheetAt(0); int rows = sheet.getPhysicalNumberOfRows(); HSSFRow row=sheet.getRow(0); int cells=row.getLastCellNum(); Object[] csr=null; for(int i=1;i<rows;i++){ row=sheet.getRow(i); csr=new String[cells]; for(int j=0;j<cells;j++){ HSSFCell cell=row.getCell(j); Object obj=null; if(cell!=null){ obj=getValue(cell); } csr[j]=obj; } list.add(csr); } if(in!=null)in.close(); return list; } public List<Object[]> importExcel07(String filePath) throws IOException{ List<Object[]> list=new ArrayList<Object[]>(); FileInputStream in=new FileInputStream(filePath); XSSFWorkbook wb=new XSSFWorkbook(in); XSSFSheet sheet = wb.getSheetAt(0); int rows = sheet.getPhysicalNumberOfRows(); XSSFRow row=sheet.getRow(0); int cells=row.getLastCellNum(); Object[] csr=null; for(int i=1;i<rows;i++){ row=sheet.getRow(i); csr=new String[cells]; for(int j=0;j<cells;j++){ XSSFCell cell=row.getCell(j); Object obj=null; if(cell!=null){ obj=getValue(cell); } csr[j]=obj; } list.add(csr); } if(in!=null)in.close(); return list; } @SuppressWarnings("static-access") public String getValue(Cell cell){ int type=cell.getCellType(); String s=""; if(type==cell.CELL_TYPE_NUMERIC){ if(HSSFDateUtil.isCellDateFormatted(cell)){ SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); s=sdf.format(cell.getDateCellValue()); }else { BigDecimal db = new BigDecimal(cell.getNumericCellValue()); s=String.valueOf(db); } }else if(type==cell.CELL_TYPE_STRING){ s=cell.getStringCellValue(); }else if(type==cell.CELL_TYPE_BOOLEAN){ s=cell.getBooleanCellValue()+""; }else if(type==cell.CELL_TYPE_FORMULA){ s=cell.getCellFormula(); }else if(type==cell.CELL_TYPE_BLANK){ s=" "; }else if(type==cell.CELL_TYPE_ERROR){ s=" "; }else{ } return s.trim(); } /** * @param args */ public static void main(String[] args) { ExcelUtils ex=new ExcelUtils(); try { List<Object[]> list=ex.importExcel("D:\\3.xls"); for(Object[] ss:list){ for(Object s:ss){ System.out.print(s+"\t"); } System.out.println(); } } catch (Exception e) { e.printStackTrace(); } } }
注意:
jdk使用版本(影响excel07)
所使用的核心jar如下
poi-3.8-20120326.jar poi-ooxml-3.8-20120326.jar poi-ooxml-schemas-3.8-20120326.jar xmlbeans-2.3.0.jar
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