JAVA导入导出EXCEL(JXL)

import java.io.File;
import java.io.IOException;

import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

public class JxlReadWriteExcelUtil {

public static void read(String filePath) throws IOException, BiffException {

Workbook rwb=Workbook.getWorkbook(new File(filePath));
Sheet rs=rwb.getSheet(0);//或者rwb.getSheet(0)
int clos=rs.getColumns();//得到所有的列
int rows=rs.getRows();//得到所有的行

System.out.println(clos+" rows:"+rows);
for (int i = 1; i < rows; i++) {
for (int j = 0; j < clos; j++) {
String a = rs.getCell(j++, i).getContents();//默认最左边编号也算一列 所以这里得j++
System.out.print(a + "  ");
}
System.out.println("");
}
}

public static void write(String outPath) throws Exception {
WritableWorkbook wwb = null;

// 创建可写入的Excel工作簿
String fileName = outPath;
File file=new File(fileName);
if (!file.exists()) {
file.createNewFile();
}
//以fileName为文件名来创建一个Workbook
wwb = Workbook.createWorkbook(file);
// 创建工作表
WritableSheet ws = wwb.createSheet("Test Shee 1", 0);

// 循环写入行列数据
for (int i = 0; i < 5; i++) {
for(int j = 0;j < 5; j++){
Label label= new Label(i, j,"哈哈");
ws.addCell(label);
}
}
//写进文档
wwb.write();
// 关闭Excel工作簿对象
wwb.close();
}

public static void main(String[] args) {
try {
JxlReadWriteExcelUtil.write("D:" + File.separator + "hh.xls");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
JxlReadWriteExcelUtil.read("D:" + File.separator + "hh.xls");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}