Java三方---->excel框架之POI的使用一

　　Apache POI是Apache软件基金会的开放源码函式库，POI提供API给Java程序对Microsoft Office格式档案读和写的功能。pdf框架之IText的使用，参见我的博客：Java三方---->pdf框架之IText的使用。今天我们开始POI中Excel部分的学习。

POI框架的简单实例

我们通过案例来学习POI，项目结构如下：

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" alt="" />

一、 创建工作薄

@Test
public void createExcel() throws Exception {
    // 建立xls文件，只需要引入poi-3.14-20160307.jar
    Workbook wb1 = new HSSFWorkbook();
    FileOutputStream fileOut = new FileOutputStream("excel/workbook.xls");
    wb1.write(fileOut);
    fileOut.close();
    wb1.close();

    // 需要额外引入poi-ooxml-3.14-20160307.jar， xmlbeans-2.6.0.jar， poi-ooxml-schemas-3.14-20160307.jar
    Workbook wb2 = new XSSFWorkbook();
    FileOutputStream fileOut2 = new FileOutputStream("excel/workbook.xlsx");
    wb2.write(fileOut2);
    fileOut2.close();
    wb2.close();
}

二、 创建工作表

@Test
public void createExce2() throws Exception {
    Workbook wb = new HSSFWorkbook();
    wb.createSheet("new sheet");
    wb.createSheet("second sheet");
    String safeName = WorkbookUtil.createSafeSheetName("[O'Brien's sales*?]s"); // returns " O'Brien's sales   "
    wb.createSheet(safeName);

    FileOutputStream fileOut = new FileOutputStream("excel/workbook1.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

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注意: sheet name is Excel must not exceed 31 characters and must not contain any of the any of the following characters:
         0x0000
         0x0003
         colon (:)
         backslash (\)
         asterisk (*)
         question mark (?)
         forward slash (/)
         opening square bracket ([)
         closing square bracket (])
You can use org.apache.poi.ss.util.WorkbookUtil#createSafeSheetName(String nameProposal)} for a safe way to create valid names, this utility replaces invalid characters with a space (' ')

三、 创建单元格

@Test
public void createExce3() throws Exception {
    Workbook wb = new HSSFWorkbook();
    CreationHelper createHelper = wb.getCreationHelper();
    Sheet sheet = wb.createSheet("new sheet");

    // Create a row and put some cells in it. Rows are 0 based.
    Row row = sheet.createRow((short) 0);
    // Create a cell and put a value in it.
    Cell cell = row.createCell(0);
    cell.setCellValue(1);

    // Or do it on one line.
    row.createCell(1).setCellValue(1.2);
    row.createCell(2).setCellValue(createHelper.createRichTextString("This is a string"));
    row.createCell(3).setCellValue(true);

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook2.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

aaarticlea/png;base64,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" alt="" />

四、 创建时间单元格

@Test
    public void createExce4() throws Exception {
        Workbook wb = new HSSFWorkbook();
        CreationHelper createHelper = wb.getCreationHelper();
        Sheet sheet = wb.createSheet("new sheet");

        // Create a row and put some cells in it. Rows are 0 based.
        Row row = sheet.createRow(0);

        // Create a cell and put a date value in it. The first cell is not
        // styled
        // as a date.
        Cell cell = row.createCell(0);
        cell.setCellValue(new Date());

        // we style the second cell as a date (and time). It is important to
        // create a new cell style from the workbook otherwise you can end up
        // modifying the built in style and effecting not only this cell but
        // other cells.
        CellStyle cellStyle = wb.createCellStyle();
        cellStyle.setDataFormat(createHelper.createDataFormat().getFormat("m/d/yy h:mm"));
        cell = row.createCell(1);
        cell.setCellValue(new Date());
        cell.setCellStyle(cellStyle);

        // you can also set date as java.util.Calendar
        cell = row.createCell(2);
        cell.setCellValue(Calendar.getInstance());
        cell.setCellStyle(cellStyle);

        // Write the output to a file
        FileOutputStream fileOut = new FileOutputStream("excel/workbook3.xls");
        wb.write(fileOut);
        fileOut.close();
        wb.close();
    }

aaarticlea/png;base64,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" alt="" />

五、 不同类型的单元格

@Test
public void createExce5() throws Exception {
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");
    Row row = sheet.createRow((short) 2);
    row.createCell(0).setCellValue(1.1);
    row.createCell(1).setCellValue(new Date());
    row.createCell(2).setCellValue(Calendar.getInstance());
    row.createCell(3).setCellValue("a string");
    row.createCell(4).setCellValue(true);
    row.createCell(5).setCellType(Cell.CELL_TYPE_ERROR);

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook4.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

aaarticlea/png;base64,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" alt="" />

六、 边框的使用

@Test
public void createExce6() throws Exception {
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");
    Row row = sheet.createRow(1);

    // Create a cell and put a value in it.
    Cell cell = row.createCell(1);
    cell.setCellValue(4);

    // Style the cell with borders all around.
    CellStyle style = wb.createCellStyle();
    style.setBorderBottom(CellStyle.BORDER_THIN);
    style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
    style.setBorderLeft(CellStyle.BORDER_THIN);
    style.setLeftBorderColor(IndexedColors.GREEN.getIndex());
    style.setBorderRight(CellStyle.BORDER_THIN);
    style.setRightBorderColor(IndexedColors.BLUE.getIndex());
    style.setBorderTop(CellStyle.BORDER_MEDIUM_DASHED);
    style.setTopBorderColor(IndexedColors.BLACK.getIndex());
    cell.setCellStyle(style);

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook5.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

aaarticlea/png;base64,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" alt="" />

七、合并单元格

@Test
public void createExce7() throws Exception {
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");

    Row row = sheet.createRow((short) 1);
    Cell cell = row.createCell((short) 1);
    cell.setCellValue("This is a test of merging");

    sheet.addMergedRegion(new CellRangeAddress(1, // first row (0-based)
            1, // last row (0-based)
            1, // first column (0-based)
            2 // last column (0-based)
    ));

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook6.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

aaarticlea/png;base64,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" alt="" />

八、 字体的设置

@Test
public void createExce8() throws Exception {
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet("new sheet");

    // Create a row and put some cells in it. Rows are 0 based.
    Row row = sheet.createRow(1);

    // Create a new font and alter it.
    Font font = wb.createFont();
    font.setFontHeightInPoints((short) 24);
    font.setFontName("Courier New");
    font.setItalic(true);
    font.setStrikeout(true);

    // Fonts are set into a style so create a new one to use.
    CellStyle style = wb.createCellStyle();
    style.setFont(font);

    // Create a cell and put a value in it.
    Cell cell = row.createCell(1);
    cell.setCellValue("This is a test of fonts");
    cell.setCellStyle(style);
    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook7.xls");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAiwAAABaCAIAAAAU8ZpLAAAMR0lEQVR4nO2du1IbSRuGtXcEf8hduFxEmxMSqMo3YRQQkDndLVU5c0KJhFKCDugEsiSGXzZgcTZgdAezgUBImtZM93R//XUz71MTeLWgebr7m37n0BK5y8trbNiwYcOGjWXLsRtgw4YNG7bMbrkxDY+Pjyc3HX+3wVWbqGfs8OfPH24FLeDPC/x5yZQ/VQjd39+zB4nO1h+1iHrGDg8PD9wKWsCfF/jzkil/qhC6vb1lDxKd7fu53yF0d3fHraAF/HmBPy+Z8qcKoevra7qE2N9bWd1a+XxCGELdn03znRIU8+sLFMrmdzMej8dXV1c0b7zQCq/8fe9/gf/6er4YmN8TWf2ImkAxBoT1Py4X6AuIrH7myyX6iiGU/KlCaDQakSXEt89fVja/rnzY+0YXQsfDhvlOiQx5UMwTlfGvX78I3nVyAL41wTN/cf+THIR2/Omgqh9bTaD0n6l4sgPAUv2QDYeSv8kQKpVK039fXFxQJUTt4+qXT/u1j6tbH/8hC6FOcGiwZ14QFwHJJH52dkbwruXC4iFHVcUk/iLZaJOMYM2fCJr6sdcEGv8lBUTQIEv1QzYcSv7GQqhUKs2G0NnZGVE8/PM192Hv28nNzuZWbrNGFULtgY0QCop5oiNyOByaf1OyyIxC5h/pb5oUsudPA4n/2F4TUP8CLIaQkr+ZECq9MitBEw87m69Pg/b3Vla/7hCFUOt73UjPzCG6IU50RAYBwdvSnPQJIfEXHnI0MwuZv6WHWiT+Y0ETUP9CrNUP0Qgo+RsIodIM0xdPT08psmEueE4+fSBbntA4run3zCLRSZDoZtB43O/3zb+pxYOQxN9iCNnzp4HEf2yvCRbqf2Z9gvkWWaofsuFQ8tcNodI809cHgwFBNnz7/CW3uvXX7Ea0POGwbSWEyOb14+Nj829q8XYEmb/odhzBCNjzp4HEf2yvCfbqn6ZFluqHbDiU/LVCqBRh+r96vZ75bDj59GF+McL+3srql0/7BCFUb1Z1ekaMxRBqtym+8UFwFBJdy5H4W1yYYM2fCJr6sdcEuvpftKdpkaX6IRsOJf/0IRRNoNkQ6na7xoPhdUnC7ItUyxOqh5XUPbMU4RJhmkuLRoNgiflYuESbpIhJ/C0ukbfjTwdV/dhqAqX/bMVMHrOYb5Gl+iEbDiX/lCEkTKDZEOp0jAfD25KEhWSiWJ5QqR6k65k4og8GyY7HWo3gduIEKx9WJfG3+GFVW/5UTaCqH1shRFj/88NA1Biy+rEUQkr+VB9WbbVaxoPB5nZwQBBCFoE/L/DnBf68KPlThVCj0WAPEoSQv8CfF/jzkil/khD6+9//vY+NonPskKkidhD48wJ/XtRC6Pn5+enp6fHx8ffv3/f393d3dzc3N9fX15eXl6PR6OLi4vz8/Ozs7MePH8Ph8PT0NAiCwWDQ7/d7vV632z0+Pu50Ou12u9lsNhqNw8PDWq3GHh6mtgMAAACU5CjuZbGHh6kt9JaDgwNuBS3gzwv8ecmUP20I0TWSFN/9w4wVsYPAnxf484IQ0sV3/zBjRewg8OcF/rzQhZD4kzoIIQfJVBE7CPx5gT8vRCG0s7mVk/x7pr5P4r77hxkrYgeBPy/w58V8CO3vraxu/fXh60fJb632fRL33T/MWBE7CPx5gT8vBCFU29m/UfjTCb5P4r77hxkrYgeBPy/w54XsmRBCyB8yVcQOAn9e4M8LQkgX3/3DjBWxg8CfF/jzghDSxXf/MGNF7CDw5wX+vCCEdPHdP8xYETsI/HmBPy8IIV189w8zVsQOAn9e4M8LQkgX3/3DjBWxg8CfF/jzgq/tMUCmisBB4M8L/HnJlD9CaJH38UXamSpiB4E/L/DnxaEQ8m4LEUJuAH9e4M9Lpvxzg+t2/7LdH7V6v1rfz1vds2b3R/N42Dj6f6MTNDonh+3BYatXb36vN7u1xlHtsFOrt6r1ZrXWqFTrlUqtUqku/pEi9ixJvUXlF9sGAADAHPjz3ovXPdFXAAAAyHOgdCVEEULj8VhJwikQQgAAoANCyAC++wMAABcIIQP47g8AAFwghAzguz8AAHCBEDKA7/4AAMAFQsgAvvsDAAAXCCED+O4PAABcIIQM4Ls/AABwgRAygO/+AADABULIAL77AwAAFwghA/jiP9xey+Vya9tDbpFkPFIFAOiAEDIAnf/uRu6NjV3Nd/NoYvdIFbwf5o63NwgL0f4e3QMhZAAZ/+01YbEJiaTN7oaBuny9uNB6Ezt4pGqR4faagTMRK3ikOmVyhNqUtr9HVeyMI0LIABL+uxvRFNndiJbg9ppg8h1OXs3QuREQsL3m+JT1hkeqE+xfeXtxrW9nHAlCKCjm1yfkiwFCKAxD8RmFKFpEueThIQ0IENeGk3ikGoahoTsNju8xDZbG0XgIlQvr64Xy4j+zHkKSF0LiQX8pWAOiwF88uhz2SDUMQw5fP3rIlqXpECoXZq5/5v4jyyEkHM3onTfxoA9xIQS8urrwSDUMQw5fP3rIliXpMyGE0Aui0VS7EHp5dTi3viHpJEWw8kappEQrdza2SU6PPFINw3BxIFIIy7Fk7dQCCVfJgjeR7BSVXjWimp7ogMQPh2gAo201OaL6e1Ro48yPToZq8XeXDoSZcVQ6HglDqFyQfSr03kNIdD9NelXC9O7x4pPMyThLHydK19YvJSteImH66BTv3VHV17cVX7DS3bsQ1kYSL1NBtAsSn4rr9Goq1fQIVRVG34ebcSnbOJlkNjYiFSs1d6QbxxSVQxVCQTGPhQkxyNfh9Awm+tNKxSx/bR17/8/GAyqPVCMyRLOZ+p2RpLu4Matv9XrV6q2m2IlSrgCcvxmXuo1vVz/RnSUXa5p+SVc5JCGklEDZDCHpEd6Nnsa8oTDtKZRU/BkQ/ScHPFKdgzCElCcEiV9YnkJavWpxTt/dSNqTbDe4eyGk08bJ3LFkT0ldk2oc01WO+RBSTaBshpDspW78+aziJYNk4Vu+nbKIR6rz0E2/qhOl3GcMl/rq9Kq9OT15eg5lxsTpCyGtNsbvJ8Ei3TimqxzTIRQU84oJlMkQEi3ZFhGfQTQXQjNPFVnW7zivKnzouks5mym+tdTUlXwKnao5tuZ0ySMoUcflDNJrY/zskDR3pOyXVJVjOITKhfUFZD4o9M5CKDpFAQAAEIKv7TEAQggAANKBEDKAqr/aqoS0d3VT/WQC9J+bdVQ18SkL4W0dxdvzpDeYZJbcWXgiJNnGxB+z/0Wr8nvUbGP8ryc8vCEYx5jKQQgZQNVf9vFd/BdMyZezuZIin2QcVU28O+9OBtFOrHoPGixpzP5QfEfYX9giv0e9NjKsSogn5j0RQgZQ9FdalWDggFf7TFLsEUJ90DqqmqRF+if4lPNNI4U0e9XeU/7kNsq4uLwqQa+N1lcl6FQOQsgAav7O3oxL+is+Fr7511HVuIN2uh6IqmeS76tE/qdMDAl+RLtXU6imJnZfcnXk+EeEdNqoN3coj6Ne5SCEDKDkb+pkX/5MX+nun7hYpt/FQXzAOqsqutR5k6A9oxYewdNPw8d+Wl7gFPOL+r2aSjU1QieF4Ze9JWEO9T2ma6PuTRTVcdSrHISQAaS+O245wrOKZT+S8M2ZUt+SKNrr6wGyxJbgWPVINQxD0d/Gfd3TnAbdp1XVm6nWP2Z6NaVqWiKy8TtLOBQJhtDAHuXbmPS9upF3SnguJLlbzcpBCBnAd38AAOACIWQA3/0BAIALhJABfPcHAAAuEEIG8N0fAAC4QAgZwHd/AADgAiFkAN/9AQCAC4SQAXz3BwAALhBCBvDdHwAAuEAIGcB3fwAA4EIthJ6fn5+enh4eHu7v729vb29ubq6urkaj0cXFxfn5+c+fP4fD4enp6cnJSb/f7/V63W736Oio3W63Wq1Go1Gv16vVaqVSOQAAAAAUwZWQGPjzAn9e4M9LpvwRQmLgzwv8eYE/L5nyRwiJgT8v8OcF/rxkyl8uhMqF9RfyxQAh5AHw5wX+vMCfF9MhFBTz64XyWxq9/hsh5DDw5wX+vMCfF9LbceWC3MVQpjrRQeDPC/x5gT8vhCEUFPO4EvIC+PMCf17gzwtNCAXFPJ4J+QP8eYE/L/DnBVdCBoA/L/DnBf68ZMofz4TEwJ8X+PMCf14y5Y8QEgN/XuDPC/x5yZS/RAjNLMsOinnJp0KZ6kQHgT8v8OcF/rwo+f8H8EmBCP5X6ZEAAAAASUVORK5CYII=" alt="" />

九、 读或重写工作表

@Test
public void createExce9() throws Exception {
    InputStream inp = new FileInputStream("excel/workbook4.xls");

    Workbook wb = WorkbookFactory.create(inp);
    Sheet sheet = wb.getSheetAt(0);
    Row row = sheet.getRow(2);
    Cell cell = row.getCell(3);
    if (cell == null)
        cell = row.createCell(3);
    cell.setCellType(Cell.CELL_TYPE_STRING);
    cell.setCellValue("a test");

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook8.xls");
    wb.write(fileOut);
    fileOut.close();
}

aaarticlea/png;base64,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" alt="" />

十、 单元格换行

@Test
public void createExce10() throws Exception {
    Workbook wb = new XSSFWorkbook(); // or new HSSFWorkbook();
    Sheet sheet = wb.createSheet();

    Row row = sheet.createRow(2);
    Cell cell = row.createCell(2);
    cell.setCellValue("Use \n with word wrap on to create a new line");

    // to enable newlines you need set a cell styles with wrap=true
    CellStyle cs = wb.createCellStyle();
    cs.setWrapText(true);
    cell.setCellStyle(cs);

    // increase row height to accomodate two lines of text
    row.setHeightInPoints((2 * sheet.getDefaultRowHeightInPoints()));

    // adjust column width to fit the content
    sheet.autoSizeColumn((short) 2);

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("excel/workbook9.xlsx");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
}

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友情链接

• 具体的学习见官方文档：             http://poi.apache.org/spreadsheet/quick-guide.html#NewWorkbook
• 本文实例代码：               http://pan.baidu.com/s/1bpG4Lm3
• pdf框架之IText的使用:        Java三方---->pdf框架之IText的使用