在Java中讀寫Excel文件
Jakarta的POI項目提供了一組操縱Windows文檔的Java API,如下幾個類提供了操作Excel文件的方便的途徑:HSSFWorkbook、HSSFSheet、HSSFRow、HSSFCell,分別代表了Excel電子表格中的Book、Sheet、行和單元格。
你可以在下面地址下載到最新的POI工具包:
http://jakarta.apache.org/poi/index.html
下面的代碼創建一個Excel文件test.xls,並在第一行的第一格中寫入一條消息:
import org.apache.poi.hssf.usermodel.*;
import java.io.FileOutputStream;
// code run against the jakarta-poi-1.5.0-FINAL-20020506.jar.
public class PoiTest {
static public void main(String[] args) throws Exception {
FileOutputStream fos = new FileOutputStream("d:/test.xls");
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet s = wb.createSheet();
wb.setSheetName(0, "first sheet");
HSSFRow row = s.createRow(0);
HSSFCell cell = row.createCell(0);
cell.setCellValue("Hello! This message is generated from POI.");
wb.write(fos);
fos.close();
}
}
讀取Excel文件時,首先生存一個POIFSFileSystem對象,由POIFSFileSystem對象構造一個HSSFWorkbook,該HSSFWorkbook對象就代表了Excel文檔。下面代碼讀取上面生成的Excel文件寫入的消息字串:
POIFSFileSystem fs = null;
HSSFWorkbook wb = null;
try {
fs = new POIFSFileSystem(new FileInputStream("d:/test.xls"));
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = sheet.getRow(0);
HSSFCell cell = row.getCell((short) 0);
String msg = cell.getStringCellValue();
(www.javaresearch.org)
你可以在下面地址下載到最新的POI工具包:
http://jakarta.apache.org/poi/index.html
下面的代碼創建一個Excel文件test.xls,並在第一行的第一格中寫入一條消息:
import org.apache.poi.hssf.usermodel.*;
import java.io.FileOutputStream;
// code run against the jakarta-poi-1.5.0-FINAL-20020506.jar.
public class PoiTest {
static public void main(String[] args) throws Exception {
FileOutputStream fos = new FileOutputStream("d:/test.xls");
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet s = wb.createSheet();
wb.setSheetName(0, "first sheet");
HSSFRow row = s.createRow(0);
HSSFCell cell = row.createCell(0);
cell.setCellValue("Hello! This message is generated from POI.");
wb.write(fos);
fos.close();
}
}
讀取Excel文件時,首先生存一個POIFSFileSystem對象,由POIFSFileSystem對象構造一個HSSFWorkbook,該HSSFWorkbook對象就代表了Excel文檔。下面代碼讀取上面生成的Excel文件寫入的消息字串:
POIFSFileSystem fs = null;
HSSFWorkbook wb = null;
try {
fs = new POIFSFileSystem(new FileInputStream("d:/test.xls"));
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = sheet.getRow(0);
HSSFCell cell = row.getCell((short) 0);
String msg = cell.getStringCellValue();
(www.javaresearch.org)
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