import com.alibaba.excel.metadata.BaseRowModel;
import com.hiberate.huijpa.pojo.EmpExcelModel;
import com.hiberate.huijpa.util.ReflectUtil;
import org.apache.poi.ss.usermodel.Workbook;
import org.junit.Test;import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** @author liyhu* @date 2019年09月28日*/
public class PoiModelClient {public static void main(String[] args) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException, NoSuchFieldException {String sheetName="one";List<BaseRowModel> data=new ArrayList<>();for (int i = 0; i < 9; i++) {EmpExcelModel model=new EmpExcelModel();model.setMobile("mobile"+i);model.setCardPassword("pwd"+i);model.setCardSn("sn"+i);model.setCardNo("no"+i);model.setFreezeStatus("正常");data.add(model);}Workbook wb = ExcelUtil.createExcel(sheetName, data);try (FileOutputStream os = new FileOutputStream("D:\\a.xlsx")){wb.write(os);} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}System.out.println("ok");}
}

import com.alibaba.excel.annotation.ExcelProperty;import com.alibaba.excel.metadata.BaseRowModel;import com.hiberate.huijpa.util.ReflectUtil;import org.apache.commons.lang3.StringUtils;import org.apache.poi.ss.usermodel.*;import org.apache.poi.ss.util.CellRangeAddress;import org.apache.poi.ss.util.CellRangeAddressList;import org.apache.poi.xssf.usermodel.XSSFRichTextString;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import org.springframework.util.CollectionUtils;

import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.util.*;import java.util.regex.Matcher;import java.util.regex.Pattern;

/** * @author liyhu * @date 2019年09月28日 */public class ExcelUtil {

    private static short text;    private static Font blodFont ;// 粗字    private static Font redFont; // 红字    private static Workbook globalWorkBook =new XSSFWorkbook();//  匹配这种格式  *状态[正常/立即冻结/售完冻结]    private static Pattern pullDownPattern = Pattern.compile("[\\u4e00-\\u9fa5]+\\[([\\u4e00-\\u9fa5]+/[\\u4e00-\\u9fa5|/]+)]$");    static {        DataFormat dataFormat = globalWorkBook.createDataFormat();//创建格式化对象        text=dataFormat.getFormat("TEXT");

        blodFont= globalWorkBook.createFont();        blodFont.setBold(true);// 加粗        blodFont.setFontName("宋体");        blodFont.setFontHeightInPoints((short) 14);// 14号字体

        redFont = globalWorkBook.createFont();        redFont.setBold(true);        redFont.setFontName("宋体");        redFont.setColor(Font.COLOR_RED);    }

    /**     * 这里的 workbook 不能用全局的 workbook     * @param workbook     * @return     */    private static CellStyle crateTitleCellStyle(Workbook workbook){        CellStyle titleStyle = workbook.createCellStyle();        //标题样式        titleStyle.setAlignment(HorizontalAlignment.CENTER);        titleStyle.setVerticalAlignment(VerticalAlignment.CENTER);

        titleStyle.setBorderBottom(BorderStyle.THIN);        titleStyle.setBorderRight(BorderStyle.THIN);

        titleStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());        titleStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);        return titleStyle;    }

    /**     * 创建标题     * @param workbook     * @param sheet     * @param colWidthMap     */    private static void setHeader(Workbook workbook, Sheet sheet, Map<String, String> headerMap, Map<Integer, Integer> colWidthMap, int startRow){        Row titleRow = sheet.createRow(startRow);        CellStyle textStyle = workbook.createCellStyle();        //标题样式        textStyle.setDataFormat(text);

        //这里不能和类里的font公用        Font blodFont = workbook.createFont();        blodFont.setBold(true);        blodFont.setFontName("宋体");        blodFont.setFontHeightInPoints((short) 14);

        CellStyle titleStyle= crateTitleCellStyle(workbook);        titleStyle.setFont(blodFont);

        int index = 0;        for (Map.Entry<String, String> header : headerMap.entrySet()) {            Cell cell = titleRow.createCell(index);            cell.setCellStyle(titleStyle);            String excelPropertyVal = header.getValue();

            Matcher matcher = pullDownPattern.matcher(excelPropertyVal);            if(matcher.find()){// 创建该列的下拉                String[] subjects  = matcher.group(1).split("/");                DataValidationHelper helper = sheet.getDataValidationHelper();                DataValidationConstraint constraint = helper.createExplicitListConstraint(subjects);                CellRangeAddressList  addressList = new CellRangeAddressList(startRow + 1, startRow+50, index, index);                DataValidation dataValidation = helper.createValidation(constraint, addressList);                sheet.addValidationData(dataValidation);            }

            setColWidth(colWidthMap,excelPropertyVal,index,true);            RichTextString richTextString = new XSSFRichTextString(excelPropertyVal);            richTextString.applyFont(blodFont);            if (richTextString.getString().startsWith("*")) {                richTextString.applyFont(0, 1, redFont);            }            cell.setCellValue(richTextString);            sheet.setDefaultColumnStyle(index, textStyle);            index++;        }    }

    private static void setColWidth(Map<Integer, Integer> colWidthMap, String val, int index, boolean isHeader){        int length = val.length();        Integer defaultColWidth = colWidthMap.get(index);        if (length > defaultColWidth) {            if(isHeader){// 标题则是字数的两倍                length *= 2;            }            colWidthMap.put(index, length );        }    }

    /**     * 这里的 workbook 不能用全局的 workbook <br/>     * 获取数据单元格样式     * @return     * @param workbook     */    private static CellStyle createDataCellStyle(Workbook workbook){        CellStyle dataStyle = workbook.createCellStyle();        dataStyle.setAlignment(HorizontalAlignment.CENTER);        dataStyle.setVerticalAlignment(VerticalAlignment.CENTER);        dataStyle.setDataFormat(text);        return dataStyle;    }

    /**     * 设置单元格数据     * @param sheet     * @param dataMapList     * @param headerMap     * @param colWidthMap     * @param startRow     */    private static void setData(Workbook workbook, Sheet sheet, List<Map<String, Object>> dataMapList, Map<String, String> headerMap, Map<Integer, Integer> colWidthMap, int startRow){        CellStyle dataStyle= createDataCellStyle(workbook);        int rowIndex = 0;        for (Map<String, Object> beanMap : dataMapList) {            Row row = sheet.createRow(rowIndex + startRow);            int colIndex = 0;            for (Map.Entry<String, String> entry : headerMap.entrySet()) {// 遍历标题                Cell cell = row.createCell(colIndex);                String key = entry.getKey();                Object val = beanMap.get(key);// 根据标题找到对应的值                String valString = "";                if(val != null){                    valString = beanMap.get(key).toString();                }                cell.setCellValue(valString);                cell.setCellStyle(dataStyle);

                setColWidth(colWidthMap,valString,colIndex, false);                colIndex++;            }            rowIndex++;        }    }

    public static Workbook createExcel(String sheetName, List<BaseRowModel> data,Class clazz) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException, NoSuchFieldException {        Workbook workbook = new XSSFWorkbook();        Sheet sheet = workbook.createSheet(sheetName);        sheet.setDefaultRowHeight((short) (2 * 256));//设置默认行高        Map<String, String> headerMap = ReflectUtil.getBeanExcelProperty(clazz);        int colNum = headerMap.size();// 列的数量        int startRow = 0;

        Map<Integer, Integer> colWidthMap = new HashMap<>();        for (int i = 0; i < colNum; i++) {// 设置默认列宽            colWidthMap.put(i, 14);        }        setHeader(workbook,sheet,headerMap,colWidthMap,startRow);        if(!CollectionUtils.isEmpty(data)){            List<Map<String, Object>> dataMapList = new ArrayList<>();            for (BaseRowModel model : data) {                Map<String, Object> map = ReflectUtil.beanToMap(model);                dataMapList.add(map);            }            setData(workbook,sheet,dataMapList,headerMap,colWidthMap,startRow + 1);        }

        for (Map.Entry<Integer, Integer> entry : colWidthMap.entrySet()) {            sheet.setColumnWidth(entry.getKey(), entry.getValue() * 256);//设置每列宽度        }        return workbook;    }

    public static TreeMap<Integer,String>  getSortMap(Class<?> clazz){        TreeMap<Integer,String> treeMap=new TreeMap<>();        Field[] fields = clazz.getDeclaredFields();        for (Field field : fields) {            ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);            if(excelProperty == null){                continue;            }            treeMap.put(excelProperty.index(),field.getName());        }        return treeMap;    }

}

import com.alibaba.excel.annotation.ExcelProperty;
import org.apache.commons.beanutils.PropertyUtilsBean;import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TreeMap;/*** @author liyhu* @date 2019年08月27日*/
public class ReflectUtil {public static <T>T mapToProperties(Map<String,Object> map,Class<T> tClass) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException, InstantiationException {T t = tClass.newInstance();PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(t);for (PropertyDescriptor descriptor : descriptors) {String name = descriptor.getName();if("class".equals(name)){continue;}Object val = map.get(name);if(val != null){propertyUtilsBean.setProperty(t,name,val);}}return t;}public static Map<String,Object> commonBeanToMap(Object obj) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(obj);Map<String,Object> resultMap=new HashMap<>(descriptors.length);for (PropertyDescriptor descriptor : descriptors) {String name = descriptor.getName();if("class".equals(name)){continue;}Object val = propertyUtilsBean.getNestedProperty(obj, name);if(val != null){resultMap.put(name,val);}}return resultMap;}public static Map<String,Object> beanToMap(Object obj) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException, NoSuchFieldException {TreeMap<Integer,String> treeMap=new TreeMap<>();Class<?> aClass = obj.getClass();PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(obj);Map<String,Object> resultMap=new HashMap<>(descriptors.length);for (PropertyDescriptor descriptor : descriptors) {String name = descriptor.getName();if("class".equals(name)){continue;}Object val = propertyUtilsBean.getNestedProperty(obj, name);if(val != null){resultMap.put(name,val);if("cellStyleMap".equals(name)){continue;}Field field = aClass.getDeclaredField(name);ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);if(excelProperty != null){treeMap.put(excelProperty.index(),name);}}}Map<String,Object> result=new LinkedHashMap<>();for (Map.Entry<Integer, String> entry : treeMap.entrySet()) {Object val = resultMap.get(entry.getValue());result.put(entry.getValue(),val);}return result;}}