Java實(shí)現(xiàn)excel導(dǎo)入導(dǎo)出學(xué)習(xí)筆記2 - 利用xml技術(shù)設(shè)置導(dǎo)入模板,設(shè)置excel樣式

I_Am 發(fā)布于2019-08-14 12:41 / 874人閱讀

摘要：四個(gè)參數(shù)分別是起始行終止行起始列終止列數(shù)據(jù)有效性對(duì)象包下載百度云盤外鏈

xml文件



    
        
        
        
        
        
                
    
    
        <tr height="16px">
            <td rowspan="1" colspan="6" value="學(xué)生信息導(dǎo)入" />
        </tr>

execel的行和列以0開頭 設(shè)置單元格居中

HSSFCellStyle cellStyle = wb.createCellStyle();//創(chuàng)建單元格樣式
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);//設(shè)置單元格對(duì)齊方式

設(shè)置單元格字體

HSSFFont font = wb.createFont();
font.setFontName("仿宋_GB2312");
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//字體加粗
//font.setFontHeight((short)12);
font.setFontHeightInPoints((short)12);
cellStyle.setFont(font);
cell.setCellStyle(cellStyle);

//合并單元格居中

 sheet.addMergedRegion(new CellRangeAddress(rspan, rspan, 0, cspan));

設(shè)置單元格數(shù)據(jù)類型

 /**
     * 測(cè)試單元格樣式
     * @author David
     * @param wb
     * @param cell
     * @param td
     */
    private static void setType(HSSFWorkbook wb, HSSFCell cell, Element td) {
        Attribute typeAttr = td.getAttribute("type");
        String type = typeAttr.getValue();
        HSSFDataFormat format = wb.createDataFormat();
        HSSFCellStyle cellStyle = wb.createCellStyle();
        if("NUMERIC".equalsIgnoreCase(type)){
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            Attribute formatAttr = td.getAttribute("format");
            String formatValue = formatAttr.getValue();
            formatValue = StringUtils.isNotBlank(formatValue)? formatValue : "#,##0.00";
            cellStyle.setDataFormat(format.getFormat(formatValue));
        }else if("STRING".equalsIgnoreCase(type)){
            cell.setCellValue("");
            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
            cellStyle.setDataFormat(format.getFormat("@"));
        }else if("DATE".equalsIgnoreCase(type)){
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            cellStyle.setDataFormat(format.getFormat("yyyy-m-d"));
        }else if("ENUM".equalsIgnoreCase(type)){
            CellRangeAddressList regions =
                    new CellRangeAddressList(cell.getRowIndex(), cell.getRowIndex(),
                            cell.getColumnIndex(), cell.getColumnIndex());
            Attribute enumAttr = td.getAttribute("format");
            String enumValue = enumAttr.getValue();
            //加載下拉列表內(nèi)容
            DVConstraint constraint =
                    DVConstraint.createExplicitListConstraint(enumValue.split(","));
            //數(shù)據(jù)有效性對(duì)象
            HSSFDataValidation dataValidation = new HSSFDataValidation(regions, constraint);
            wb.getSheetAt(0).addValidationData(dataValidation);
        }
        cell.setCellStyle(cellStyle);
    }

設(shè)置下拉列表類型

封裝設(shè)置數(shù)據(jù)有效性方法

/**
     * 方法名稱：SetDataValidation
     * 內(nèi)容摘要：設(shè)置數(shù)據(jù)有效性
     * @param  sheet excel sheet內(nèi)容
     * @param textList 下拉列表
     * @param firstRow 單元格範(fàn)圍
     * @param firstCol
     * @param endRow
     * @param endCol
     */
    private static HSSFDataValidation setDataValidation(HSSFSheet sheet,String[] textList,short firstRow,short firstCol, short endRow, short endCol) {
        //加載下拉列表內(nèi)容
        DVConstraint constraint = DVConstraint.createExplicitListConstraint(textList);
        //設(shè)置數(shù)據(jù)有效性加載在哪個(gè)單元格上。
        //四個(gè)參數(shù)分別是：起始行、終止行、起始列、終止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow,endRow, firstCol, endCol);
        //數(shù)據(jù)有效性對(duì)象
        HSSFDataValidation data_validation = new HSSFDataValidation(regions, constraint);
        sheet.addValidationData(data_validation);
        return data_validation;
    }

設(shè)置列寬方法封裝

    /**
     * 設(shè)置列寬
     * @author David
     * @param sheet
     * @param colgroup
     */
    private static void setColumnWidth(HSSFSheet sheet, Element colgroup) {
        List cols = colgroup.getChildren("col");
        for (int i = 0; i < cols.size(); i++) {
            Element col = cols.get(i);
            Attribute width = col.getAttribute("width");
            String unit = width.getValue().replaceAll("[0-9,.]", "");//截取單位
            String value = width.getValue().replaceAll(unit, "");//擦除單位
            int v=0;
            //單位轉(zhuǎn)化
            if(StringUtils.isBlank(unit) || "px".endsWith(unit)){//如果單位為空或等于px
                v = Math.round(Float.parseFloat(value) * 37F);
            }else if ("em".endsWith(unit)){//如果單位為em
                v = Math.round(Float.parseFloat(value) * 267.5F);
            }
            sheet.setColumnWidth(i, v);//設(shè)置第i列寬度為v
        }
    }

完整代碼

package com.imooc.excel;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.jdom.Attribute;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;

import java.io.File;
import java.io.FileOutputStream;
import java.util.List;

/**
 * Created by chenld1 on 2015/10/6.
 */
public class CreateTemplate {
    /**
     * 創(chuàng)建模板文件
     * @author David
     * @param args
     */
    public static void main(String[] args) {
        //獲取解析xml文件路徑

        String path = System.getProperty("user.dir") + "/student2.xml";
        File file = new File(path);
        SAXBuilder builder = new SAXBuilder();
        try {
            //解析xml文件
            Document parse = builder.build(file);
            //創(chuàng)建Excel
            HSSFWorkbook wb = new HSSFWorkbook();
            //創(chuàng)建sheet
            HSSFSheet sheet = wb.createSheet("Sheet0");

            //獲取xml文件跟節(jié)點(diǎn)
            Element root = parse.getRootElement();
            //獲取模板名稱
            String templateName = root.getAttribute("name").getValue();

            int rownum = 0;
            int column = 0;
            //設(shè)置列寬
            Element colgroup = root.getChild("colgroup");
            setColumnWidth(sheet,colgroup);

            //設(shè)置標(biāo)題
            Element title = root.getChild("title");
            List trs = title.getChildren("tr");
            for (int i = 0; i < trs.size(); i++) {
                Element tr = trs.get(i);
                List tds = tr.getChildren("td");
                HSSFRow row = sheet.createRow(rownum);
                HSSFCellStyle cellStyle = wb.createCellStyle();//創(chuàng)建單元格樣式
                cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);//設(shè)置單元格對(duì)齊方式
                for(column = 0;column  ths = tr.getChildren("th");
                for(column = 0;column < ths.size();column++){
                    Element th = ths.get(column);
                    Attribute valueAttr = th.getAttribute("value");
                    HSSFCell cell = row.createCell(column);
                    if(valueAttr != null){
                        String value =valueAttr.getValue();
                        cell.setCellValue(value);
                    }
                }
                rownum++;
            }

            //設(shè)置數(shù)據(jù)區(qū)域樣式
            Element tbody = root.getChild("tbody");
            Element tr = tbody.getChild("tr");
            int repeat = tr.getAttribute("repeat").getIntValue();

            List tds = tr.getChildren("td");
            for (int i = 0; i < repeat; i++) {
                HSSFRow row = sheet.createRow(rownum);
                for(column =0 ;column < tds.size();column++){
                    Element td = tds.get(column);
                    HSSFCell cell = row.createCell(column);
                    setType(wb,cell,td);
                }
                rownum++;
            }

            //生成Excel導(dǎo)入模板
            File tempFile = new File("e:/" + templateName + ".xls");
            tempFile.delete();
            tempFile.createNewFile();
            FileOutputStream stream = FileUtils.openOutputStream(tempFile);
            wb.write(stream);
            stream.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 設(shè)置單元格數(shù)據(jù)類型
     * @author David
     * @param wb
     * @param cell
     * @param td
     */
    private static void setType(HSSFWorkbook wb, HSSFCell cell, Element td) {
        Attribute typeAttr = td.getAttribute("type");
        String type = typeAttr.getValue();
        //HSSFDataformat
        HSSFDataFormat format = wb.createDataFormat();
        HSSFCellStyle cellStyle = wb.createCellStyle();
        if("NUMERIC".equalsIgnoreCase(type)){
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            Attribute formatAttr = td.getAttribute("format");
            String formatValue = formatAttr.getValue();
            formatValue = StringUtils.isNotBlank(formatValue)? formatValue : "#,##0.00";
            cellStyle.setDataFormat(format.getFormat(formatValue));
        }else if("STRING".equalsIgnoreCase(type)){
            cell.setCellValue("");
            cell.setCellType(HSSFCell.CELL_TYPE_STRING);
            cellStyle.setDataFormat(format.getFormat("@"));
        }else if("DATE".equalsIgnoreCase(type)){
            cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
            cellStyle.setDataFormat(format.getFormat("yyyy-m-d"));
        }else if("ENUM".equalsIgnoreCase(type)){
            CellRangeAddressList regions =
                    new CellRangeAddressList(cell.getRowIndex(), cell.getRowIndex(),
                            cell.getColumnIndex(), cell.getColumnIndex());
            Attribute enumAttr = td.getAttribute("format");
            String enumValue = enumAttr.getValue();
            //加載下拉列表內(nèi)容
            DVConstraint constraint =
                    DVConstraint.createExplicitListConstraint(enumValue.split(","));
            //數(shù)據(jù)有效性對(duì)象
            HSSFDataValidation dataValidation = new HSSFDataValidation(regions, constraint);
            wb.getSheetAt(0).addValidationData(dataValidation);
        }
        cell.setCellStyle(cellStyle);
    }

    /**
     * 設(shè)置列寬
     * @author David
     * @param sheet
     * @param colgroup
     */
    private static void setColumnWidth(HSSFSheet sheet, Element colgroup) {
        List cols = colgroup.getChildren("col");
        for (int i = 0; i < cols.size(); i++) {
            Element col = cols.get(i);
            Attribute width = col.getAttribute("width");
            String unit = width.getValue().replaceAll("[0-9,.]", "");//截取單位
            String value = width.getValue().replaceAll(unit, "");//擦除單位
            int v=0;
            //單位轉(zhuǎn)化
            if(StringUtils.isBlank(unit) || "px".endsWith(unit)){//如果單位為空或等于px
                v = Math.round(Float.parseFloat(value) * 37F);
            }else if ("em".endsWith(unit)){//如果單位為em
                v = Math.round(Float.parseFloat(value) * 267.5F);
            }
            sheet.setColumnWidth(i, v);//設(shè)置第i列寬度為v
        }
    }


    /**
     * 方法名稱：SetDataValidation
     * 內(nèi)容摘要：設(shè)置數(shù)據(jù)有效性
     * @param  sheet excel sheet內(nèi)容
     * @param textList 下拉列表
     * @param firstRow 單元格範(fàn)圍
     * @param firstCol
     * @param endRow
     * @param endCol
     */
    private static HSSFDataValidation setDataValidation(HSSFSheet sheet,String[] textList,short firstRow,short firstCol, short endRow, short endCol) {
        //加載下拉列表內(nèi)容
        DVConstraint constraint = DVConstraint.createExplicitListConstraint(textList);
        //設(shè)置數(shù)據(jù)有效性加載在哪個(gè)單元格上。
        //四個(gè)參數(shù)分別是：起始行、終止行、起始列、終止列
        CellRangeAddressList regions = new CellRangeAddressList(firstRow,endRow, firstCol, endCol);
        //數(shù)據(jù)有效性對(duì)象
        HSSFDataValidation data_validation = new HSSFDataValidation(regions, constraint);
        sheet.addValidationData(data_validation);
        return data_validation;
    }
}

jar包下載

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