【JXL】导出Excel

 基本设置

//        File file = new File("d:\writetest.xlsx");
//        WritableWorkbook wwb  = Workbook.createWorkbook(file);
            
String filePath = "d:\writetest1.xlsx";
OutputStream os = new FileOutputStream(filePath);
WritableWorkbook wwb = Workbook.createWorkbook(os);

//创建Excel工作表
WritableSheet ws = wwb.createSheet("sheet1", 0);

//打印时横向；LANDSCAPE（横向）、PORTRAIT（纵向）
ws.setPageSetup(PageOrientation.LANDSCAPE, PaperSize.A4, 0.5d, 0.5d);

//去掉整个sheet中的网格线
ws.getSettings().setShowGridLines(false);

//            // 高度设置 此方法有bug，不建议用
//            ws.setRowView(12,1000);

//宽度设置  第六列
ws.setColumnView(5, 30);

//合并单元格
ws.mergeCells(0, 0, 22, 0);//合并单元格(左列，左行，右列，右行),类似坐标，但又不同

//添加文本单元格
ws.addCell(new Label(0, 0, "2016年财政教育经费投入情况调查表", getTitle()));

//布尔
ws.addCell(new Boolean(2, 7, true));

 //日期类型
ws.addCell(new DateTime(3,7, new Date(),new WritableCellFormat(DateFormats.FORMAT1)));

//将建公式（求和）
ws.addCell(new Formula(1, 9, "SUM(B8:B9)", getCellNumberFormat()));

 //超链接
ws.addCell(new Label(0, 16, "", getHeader()));//设置边框
WritableHyperlink link = new WritableHyperlink(0, 16, new URL("http://www.baidu.com"));
link.setDescription("链接使用 链接到NilPower");
ws.addHyperlink(link);

//数字
WritableCellFormat w1 = new WritableCellFormat(NumberFormats.FORMAT1);
ws.addCell(new Number(1, 12, 19915042699.6764, w1));

//导出图片 API中注明只支持png文件
File file = new File("C:\Users\jinxiang.qin.qjx\Desktop\1.png"); // 获得图片
WritableImage image = new WritableImage(0, 20, 3, 3, file); // 设置图片显示位置
// 4，4代表图片的高和宽占4个单元格
ws.addImage(image); // 加载图片

 字体边框对齐方式等设置

/**
     * 设置头的样式
     *
     * @return
     */
    private WritableCellFormat getHeader() {
        try {
            //设置字体Arial,48号，加粗,是否斜体,双下划线
            WritableFont font = new WritableFont(WritableFont.createFont("微软雅黑"), 48, WritableFont.BOLD, true, UnderlineStyle.DOUBLE);
            //字体颜色
            font.setColour(Colour.GREEN);

            WritableCellFormat wcf = new WritableCellFormat(font);
            //水平居中
            wcf.setAlignment(Alignment.CENTRE);
            //垂直居中
            wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
            //边框设置
            wcf.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);
            //背景颜色
            wcf.setBackground(Colour.YELLOW);
            //是否自动换行
            wcf.setWrap(true);
            return wcf;
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());
        }

字体输入方向

WritableCellFormat f= getHeader();
f.setOrientation(Orientation.HORIZONTAL);
ws.addCell(new Label(0, 18, "本年购置数",f));

WritableCellFormat f1= getHeader();
f1.setOrientation(Orientation.VERTICAL);
ws.addCell(new Label(1, 18, "本年购置数",f1));

WritableCellFormat f2= getHeader();
f2.setOrientation(Orientation.PLUS_90);
ws.addCell(new Label(2, 18, "本年购置数",f2));

WritableCellFormat f3= getHeader();
f3.setOrientation(Orientation.MINUS_90);
ws.addCell(new Label(3, 18, "本年购置数",f3));

WritableCellFormat f4= getHeader();
f4.setOrientation(Orientation.PLUS_45);
ws.addCell(new Label(4, 18, "本年购置数",f4));

WritableCellFormat f5= getHeader();
f5.setOrientation(Orientation.MINUS_45);
ws.addCell(new Label(5, 18, "本年购置数",f5));

WritableCellFormat f6= getHeader();
f6.setOrientation(Orientation.STACKED);
ws.addCell(new Label(6, 18, "本年购置数",f6));

日期格式化

 /**
     * 日期格式化（自定义）
     * @return
     * @throws Exception
     */
    private  WritableCellFormat getCellDateFormat() throws Exception {
        //此处也可以使用 DateFormats
        WritableCellFormat wcf = getCellFormat(new DateFormat("yyyy-MM-dd HH:mm:ss"));
        //水平居中
        wcf.setAlignment(Alignment.CENTRE);
        return wcf;
    }

 数字格式化

/**
     * 数字格式化例子
     * @param ws
     * @throws Exception
     */
    private void  getNumber(WritableSheet ws) throws Exception{
        ///////////////////////////////////////////////////
        ws.addCell(new Label(0, 12, "FORMAT"));
//            四舍五入整数
        WritableCellFormat w1 = new WritableCellFormat(NumberFormats.FORMAT1);
        ws.addCell(new Number(1, 12, 19915042699.6764, w1));

//            四舍五入整数
        WritableCellFormat w2 = new WritableCellFormat(NumberFormats.FORMAT2);
        ws.addCell(new Number(2, 12, 29915042699.6764, w2));

//            四舍五入保留两位小数
        WritableCellFormat w3 = new WritableCellFormat(NumberFormats.FORMAT3);
        ws.addCell(new Number(3, 12, 39915042699.6764, w3));

//            四舍五入保留两位小数
        WritableCellFormat w4 = new WritableCellFormat(NumberFormats.FORMAT4);
        ws.addCell(new Number(4, 12, 49915042699.6764, w4));

//            四舍五入整数
        WritableCellFormat w5 = new WritableCellFormat(NumberFormats.FORMAT5);
        ws.addCell(new Number(5, 12, 59915042699.6764, w5));

//            四舍五入整数，前面加上了“￥”
        WritableCellFormat w6 = new WritableCellFormat(NumberFormats.FORMAT6);
        ws.addCell(new Number(6, 12, 69915042699.6764, w6));

//            四舍五入保留两位小数
        WritableCellFormat w7 = new WritableCellFormat(NumberFormats.FORMAT7);
        ws.addCell(new Number(7, 12, 79915042699.6764, w7));

//            四舍五入保留两位小数，前面加上了“￥”
        WritableCellFormat w8 = new WritableCellFormat(NumberFormats.FORMAT8);
        ws.addCell(new Number(8, 12, 89915042699.6764, w8));

        WritableCellFormat w9 = new WritableCellFormat(NumberFormats.FORMAT9);
        ws.addCell(new Number(9, 12, 95042699.6764, w9));

//            科学计数法展示
        WritableCellFormat w10 = new WritableCellFormat(NumberFormats.FORMAT10);
        ws.addCell(new Number(10, 12, 915042699.6764, w10));

//            四舍五入保留两位小数，无千位分隔符
        WritableCellFormat w11 = new WritableCellFormat(NumberFormats.TEXT);
        ws.addCell(new Number(11, 12, 915042699.6764, w11));


///////////////////////////////////////////////////

        ws.addCell(new Label(0, 13, "DEFAULT"));

        WritableCellFormat r1 = new WritableCellFormat(NumberFormats.DEFAULT);
        ws.addCell(new Number(1, 13, 19915042699.6764, r1));

        WritableCellFormat r2 = new WritableCellFormat(NumberFormats.INTEGER);
        ws.addCell(new Number(2, 13, 29915042699.6764, r2));

        WritableCellFormat r3 = new WritableCellFormat(NumberFormats.FLOAT);
        ws.addCell(new Number(3, 13, 39915042699.6764, r3));

        WritableCellFormat r4 = new WritableCellFormat(NumberFormats.THOUSANDS_INTEGER);
        ws.addCell(new Number(4, 13, 49915042699.6764, r4));

        WritableCellFormat r5 = new WritableCellFormat(NumberFormats.THOUSANDS_FLOAT);
        ws.addCell(new Number(5, 13, 59915042699.6764, r5));

        WritableCellFormat r6 = new WritableCellFormat(NumberFormats.ACCOUNTING_INTEGER);
        ws.addCell(new Number(6, 13, 69915042699.6764, r6));

        WritableCellFormat r7 = new WritableCellFormat(NumberFormats.ACCOUNTING_RED_INTEGER);
        ws.addCell(new Number(7, 13, 79915042699.6764, r7));

        WritableCellFormat r8 = new WritableCellFormat(NumberFormats.ACCOUNTING_FLOAT);
        ws.addCell(new Number(8, 13, 89915042699.6764, r8));

        WritableCellFormat r9 = new WritableCellFormat(NumberFormats.ACCOUNTING_RED_FLOAT);
        ws.addCell(new Number(9, 13, 99915042699.6764, r9));


///////////////////////////////////////////////////

        ws.addCell(new Label(0, 14, "百分比"));

        WritableCellFormat c1 = new WritableCellFormat(NumberFormats.PERCENT_INTEGER);
        ws.addCell(new Number(1, 14, 19915042699.6764, c1));

        WritableCellFormat c2 = new WritableCellFormat(NumberFormats.PERCENT_FLOAT);
        ws.addCell(new Number(2, 14, 29915042699.6764, c2));

        WritableCellFormat c3 = new WritableCellFormat(NumberFormats.EXPONENTIAL);
        ws.addCell(new Number(3, 14, 39915042699.6764, c3));

        WritableCellFormat c4 = new WritableCellFormat(NumberFormats.FRACTION_ONE_DIGIT);
        ws.addCell(new Number(4, 14, 49915042699.6764, c4));

        WritableCellFormat c5 = new WritableCellFormat(NumberFormats.FRACTION_TWO_DIGITS);
        ws.addCell(new Number(5, 14, 59915042699.6764, c5));
    }

数字自定义格式化

  /**
     * 数字千位分隔符格式化,保留三位小数（自定义）
     * @return
     * @throws Exception
     */
    private  WritableCellFormat getCellNumberFormat() throws Exception {
        WritableCellFormat wcf = getCellFormat(new NumberFormat("#,##0.000"));

//        WritableCellFormat wcf = getCellFormat(NumberFormats.FORMAT3);
        //水平居中
        wcf.setAlignment(Alignment.RIGHT);
        return wcf;
    }

自动调整列宽（来自网络，用时自己测试）

方法1：
CellView cellView = new CellView();  
cellView.setAutosize(true); //设置自动大小  
sheet.setColumnView(1, cellView);//根据内容自动设置列宽  
label = new Label(1, 0, "zzzzzzzzzzzzzzzzzzzzzz");  
sheet.addCell(label);  

////////////////////////////
方法2：
label = new Label(1, 0, "zzzzzzzzzzzzzzzzzzzzzz");  
sheet.addCell(label);  
sheet.setColumnView(1, new String("zzzzzzzzzzzzzzzzzzzzzz").length()); 

其他常用API

4 jxl常用api  （来自网络 ）
4.1.1 1、Workbook类提供的方法
int getNumberOfSheets() 获取工作表的总个数
Sheet[] getSheets() 获取数组型的工作表
Sheet getSheet(String name);//得到此对应名称的工作表
4.1.2 2、Sheet接口提供的方法
String getName() 获取工作表的名称
int getColumns() 获取Sheet表中所包含的总列数
Cell[] getColumn(int column) 获取某一列的所有单元格，
返回的是单元格对象数组
int getRows() 获取Sheet表中所包含的总行数
Cell[] getRow(int row) 获取某一行的所有单元格，返回的是单元格对象数组
Cell getCell(int column, int row)获取指定单元格的对象引用，需要注意的是它的两个参数，第一个是列数，第二个是行数，这与通常的行、列组合有些不同
WritableSheet.setRowView(int i,int height); 指定第i+1行的高度
WritableSheet.setColumnView(int i,int width); 指定第i+1列的宽度