java读取excel表格的方法

<dependency>
  <groupId>net.sourceforge.jexcelapi</groupId>
  <artifactId>jxl</artifactId>
  <version>2.6.12</version>
</dependency>

import jxl.Workbook; //java读取excel表使用的类 
import jxl.Cell;  //java读取表格里的单元格的类 
import jxl.Sheet; //java读取的工作铺的类

File Inputfile = new File("D:\\redisInput\\GPSINFO.xls");

FileInputStream fileInputStream = new FileInputStream(Inputfile);

Workbook workbook = Workbook.getWorkbook(fileInputStream);

Sheet readfirst = workbook.getSheet(0);

int rows = readfirst.getRows();
int clomns = readfirst.getColumns();
System.out.println("row:" + rows);
System.out.println("clomns:" + clomns);

for(int i =1;i<rows;i++) {
 for(int j =1;i<rows;i++) {
 Cell cell = readfirst.getCell(j,i); //j在前 i 在后是根据excel下标来判断的
 String s = cell.getContents();
 System.out.println("cell"+s);
}

public class AnalysisExcel {
 
 Workbook workbook = null;
 File Inputfile = new File("D:\\redisInput\\GPSINFO.xls");
 File outputfile =new File("D:\\redisInput\\GPSINFO.txt");
 
 public void ToAnalysisExcel() {
 // Unable to recognize OLE stream 不支持xlsx格式 支持xls格式
 
 try {
 
  FileInputStream fileInputStream = new FileInputStream(Inputfile);
  workbook = Workbook.getWorkbook(fileInputStream);
  FileOutputStream fileOutputStream = new FileOutputStream(outputfile);
  BufferedOutputStream bw = new BufferedOutputStream(fileOutputStream); //输出语句
 
  Sheet readfirst = workbook.getSheet(0);
  int rows = readfirst.getRows();
  int clomns = readfirst.getColumns();
  System.out.println("row:" + rows);
  System.out.println("clomns:" + clomns);
 
  for(int i =1;i<rows;i++) {
  Cell[] cells = readfirst.getRow(i); //循环得到每一行的单元格对象
 
  //根据每一个单元格对象的到里面的值
  String brandNum= cells[0].getContents(); 
  String deviceCode = cells[1].getContents();
  String sim =cells[2].getContents();
  System.out.println("rand:"+brandNum+",vehicleNum:"+deviceCode+",sim:"+sim);
  
   //将得到的值放在一个我需要的格式的string对象中
 
  String output = "\n"+sim+"\n" +
   "{\n" +
   " \"brandColor\": 500000,\n" +
   " \"brandNumber\": \""+brandNum+"\",\n" +
   " \"deviceCode\": \""+deviceCode+"\",\n" +
   " \"simCard\": \""+sim+"\"\n" +
   "}"+
    "\n";
  //write and flush到 我需要的文件中去，flush后才能成功
  byte[] outputbyte = new String(output).getBytes();
  bw.write(outputbyte);
 
  bw.flush();
  }
 
 
 } catch (FileNotFoundException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 } catch (BiffException e) {
  e.printStackTrace();
 }
 
 }
 
}