导入模板添加默认参数

RuoYi

2021-10-09 5ab8d7d490edac2b08eb23f1851f0a406b006634

 src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java

@@ -6,6 +6,7 @@
import java.io.InputStream;

import java.io.OutputStream;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

import java.math.BigDecimal;

import java.text.DecimalFormat;

import java.util.ArrayList;

@@ -46,6 +47,7 @@
import org.apache.poi.ss.usermodel.VerticalAlignment;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.ss.usermodel.WorkbookFactory;

import org.apache.poi.ss.util.CellRangeAddress;

import org.apache.poi.ss.util.CellRangeAddressList;

import org.apache.poi.util.IOUtils;

import org.apache.poi.xssf.streaming.SXSSFWorkbook;

@@ -125,6 +127,16 @@
    private List<Object[]> fields;



    /**

     * 当前行号

     */

    private int rownum;

    
    /**

     * 标题

     */

    private String title;



    /**

     * 最大高度

     */

    private short maxHeight;

@@ -149,7 +161,7 @@
        this.clazz = clazz;

    }



    public void init(List<T> list, String sheetName, Type type)

    public void init(List<T> list, String sheetName, String title, Type type)

    {

        if (list == null)

        {

@@ -158,8 +170,27 @@
        this.list = list;

        this.sheetName = sheetName;

        this.type = type;

        this.title = title;

        createExcelField();

        createWorkbook();

        createTitle();

    }



    /**

     * 创建excel第一行标题

     */

    public void createTitle()

    {

        if (StringUtils.isNotEmpty(title))

        {

            Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);

            titleRow.setHeightInPoints(30);

            Cell titleCell = titleRow.createCell(0);

            titleCell.setCellStyle(styles.get("title"));

            titleCell.setCellValue(title);

            sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),

                    this.fields.size() - 1));

        }

    }



    /**

@@ -170,17 +201,30 @@
     */

    public List<T> importExcel(InputStream is) throws Exception

    {

        return importExcel(StringUtils.EMPTY, is);

        return importExcel(is, 0);

    }



    /**

     * 对excel表单默认第一个索引名转换成list

     * 
     * @param is 输入流

     * @param titleNum 标题占用行数

     * @return 转换后集合

     */

    public List<T> importExcel(InputStream is, int titleNum) throws Exception

    {

        return importExcel(StringUtils.EMPTY, is, titleNum);

    }



    /**

     * 对excel表单指定表格索引名转换成list

     * 

     * @param sheetName 表格索引名

     * @param titleNum 标题占用行数

     * @param is 输入流

     * @return 转换后集合

     */

    public List<T> importExcel(String sheetName, InputStream is) throws Exception

    public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception

    {

        this.type = Type.IMPORT;

        this.wb = WorkbookFactory.create(is);

@@ -209,7 +253,7 @@
            // 定义一个map用于存放excel列的序号和field.

            Map<String, Integer> cellMap = new HashMap<String, Integer>();

            // 获取表头

            Row heard = sheet.getRow(0);

            Row heard = sheet.getRow(titleNum);

            for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)

            {

                Cell cell = heard.getCell(i);

@@ -242,7 +286,7 @@
                    }

                }

            }

            for (int i = 1; i <= rows; i++)

            for (int i = titleNum + 1; i <= rows; i++)

            {

                // 从第2行开始取数据,默认第一行是表头.

                Row row = sheet.getRow(i);

@@ -333,6 +377,10 @@
                        {

                            val = reverseDictByExp(Convert.toStr(val), attr.dictType(), attr.separator());

                        }

                        else if (!attr.handler().equals(ExcelHandlerAdapter.class))

                        {

                            val = dataFormatHandlerAdapter(val, attr);

                        }

                        else if (ColumnType.IMAGE == attr.cellType() && StringUtils.isNotEmpty(pictures))

                        {

                            PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey());

@@ -364,7 +412,20 @@
     */

    public AjaxResult exportExcel(List<T> list, String sheetName)

    {

        this.init(list, sheetName, Type.EXPORT);

        return exportExcel(list, sheetName, StringUtils.EMPTY);

    }

    
    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @param list 导出数据集合

     * @param sheetName 工作表的名称

     * @param title 标题

     * @return 结果

     */

    public AjaxResult exportExcel(List<T> list, String sheetName, String title)

    {

        this.init(list, sheetName, title, Type.EXPORT);

        return exportExcel();

    }



@@ -377,11 +438,26 @@
     * @return 结果

     * @throws IOException

     */

    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) throws IOException

    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)throws IOException

    {

        exportExcel(response, list, sheetName, StringUtils.EMPTY);

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @param response 返回数据

     * @param list 导出数据集合

     * @param sheetName 工作表的名称

     * @param title 标题

     * @return 结果

     * @throws IOException

     */

    public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title) throws IOException

    {

        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

        response.setCharacterEncoding("utf-8");

        this.init(list, sheetName, Type.EXPORT);

        this.init(list, sheetName, title, Type.EXPORT);

        exportExcel(response.getOutputStream());

    }



@@ -393,7 +469,19 @@
     */

    public AjaxResult importTemplateExcel(String sheetName)

    {

        this.init(null, sheetName, Type.IMPORT);

        return importTemplateExcel(sheetName, StringUtils.EMPTY);

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @param sheetName 工作表的名称

     * @param title 标题

     * @return 结果

     */

    public AjaxResult importTemplateExcel(String sheetName, String title)

    {

        this.init(null, sheetName, title, Type.IMPORT);

        return exportExcel();

    }



@@ -405,9 +493,21 @@
     */

    public void importTemplateExcel(HttpServletResponse response, String sheetName) throws IOException

    {

        importTemplateExcel(response, sheetName, StringUtils.EMPTY);

    }



    /**

     * 对list数据源将其里面的数据导入到excel表单

     * 
     * @param sheetName 工作表的名称

     * @param title 标题

     * @return 结果

     */

    public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) throws IOException

    {

        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

        response.setCharacterEncoding("utf-8");

        this.init(null, sheetName, Type.IMPORT);

        this.init(null, sheetName, title, Type.IMPORT);

        exportExcel(response.getOutputStream());

    }



@@ -468,13 +568,13 @@
    public void writeSheet()

    {

        // 取出一共有多少个sheet.

        double sheetNo = Math.ceil(list.size() / sheetSize);

        for (int index = 0; index <= sheetNo; index++)

        int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));

        for (int index = 0; index < sheetNo; index++)

        {

            createSheet(sheetNo, index);



            // 产生一行

            Row row = sheet.createRow(0);

            Row row = sheet.createRow(rownum);

            int column = 0;

            // 写入各个字段的列头名称

            for (Object[] os : fields)

@@ -502,7 +602,7 @@
        int endNo = Math.min(startNo + sheetSize, list.size());

        for (int i = startNo; i < endNo; i++)

        {

            row = sheet.createRow(i + 1 - startNo);

            row = sheet.createRow(i + 1 + rownum - startNo);

            // 得到导出对象.

            T vo = (T) list.get(i);

            int column = 0;

@@ -528,6 +628,16 @@
        // 写入各条记录,每条记录对应excel表中的一行

        Map<String, CellStyle> styles = new HashMap<String, CellStyle>();

        CellStyle style = wb.createCellStyle();

        style.setAlignment(HorizontalAlignment.CENTER);

        style.setVerticalAlignment(VerticalAlignment.CENTER);

        Font titleFont = wb.createFont();

        titleFont.setFontName("Arial");

        titleFont.setFontHeightInPoints((short) 16);

        titleFont.setBold(true);

        style.setFont(titleFont);

        styles.put("title", style);



        style = wb.createCellStyle();

        style.setAlignment(HorizontalAlignment.CENTER);

        style.setVerticalAlignment(VerticalAlignment.CENTER);

        style.setBorderRight(BorderStyle.THIN);

@@ -729,6 +839,10 @@
                {

                    cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());

                }

                else if (!attr.handler().equals(ExcelHandlerAdapter.class))

                {

                    cell.setCellValue(dataFormatHandlerAdapter(value, attr));

                }

                else

                {

                    // 设置列类型

@@ -899,6 +1013,28 @@
    public static String reverseDictByExp(String dictLabel, String dictType, String separator)

    {

        return DictUtils.getDictValue(dictType, dictLabel, separator);

    }



    /**

     * 数据处理器

     * 
     * @param value 数据值

     * @param excel 数据注解

     * @return

     */

    public String dataFormatHandlerAdapter(Object value, Excel excel)

    {

        try

        {

            Object instance = excel.handler().newInstance();

            Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class });

            value = formatMethod.invoke(instance, value, excel.args());

        }

        catch (Exception e)

        {

            log.error("不能格式化数据 " + excel.handler(), e.getMessage());

        }

        return Convert.toStr(value);

    }



    /**

@@ -1086,6 +1222,9 @@
    public void createWorkbook()

    {

        this.wb = new SXSSFWorkbook(500);

        this.sheet = wb.createSheet();

        wb.setSheetName(0, sheetName);

        this.styles = createStyles(wb);

    }



    /**

@@ -1094,17 +1233,13 @@
     * @param sheetNo sheet数量

     * @param index 序号

     */

    public void createSheet(double sheetNo, int index)

    public void createSheet(int sheetNo, int index)

    {

        this.sheet = wb.createSheet();

        this.styles = createStyles(wb);

        // 设置工作表的名称.

        if (sheetNo == 0)

        if (sheetNo > 1 && index > 0)

        {

            wb.setSheetName(index, sheetName);

        }

        else

        {

            this.sheet = wb.createSheet();

            this.createTitle();

            wb.setSheetName(index, sheetName + index);

        }

    }