package jxl;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

public class JxlExcelWriter {
    
    /**
     * @param out 输出excel文件.
     * @param br 输入txt文件.
     */
    public void writeExcel(OutputStream out, BufferedReader br) {
        if(br == null) {
            throw new IllegalArgumentException("写excel流需要file!");
        }
        try {
            WritableWorkbook workbook = Workbook.createWorkbook(out);
            WritableSheet ws = workbook.createSheet("sheet 1", 0);
            int rowNum = 0; // 写入行数
            
            //文件行数
            String line = null;
            while((line = br.readLine()) != null){
                String[] data = line.split("\t");
                Object[] cells = (Object[]) data;
                putRow(ws, rowNum, cells); // 写一行到sheet
                rowNum++;
               
            }
            
            workbook.write();
            workbook.close(); // 关闭、保存Excel
            
            System.out.print("success!");
        } catch (RowsExceededException e) {
            System.out.println("jxl write RowsExceededException: "+e.getMessage());
        } catch (WriteException e) {
            System.out.println("jxl write WriteException: "+e.getMessage());
        } catch (IOException e) {
            System.out.println("jxl write file i/o exception!, cause by: "+e.getMessage());
        }
    }

    private void putRow(WritableSheet ws, int rowNum, Object[] cells) throws RowsExceededException, WriteException {
        
        for(int i=0; i<cells.length; i++) {
            Label cell = new Label(i, rowNum, ""+cells[i]);
            ws.addCell(cell);
        }
    }
    
    public static void main(String args[]) {
        
        try {
            BufferedReader br = new BufferedReader(new FileReader("e:/input/data.txt"));
            OutputStream out = new FileOutputStream(new File("e:/out/test.xls"));
            
            JxlExcelWriter jxlExcelWriter = new JxlExcelWriter();
            jxlExcelWriter.writeExcel(out, br);
            out.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}