Jay
2024-11-01 03e8aca3ad6201c0d74e00d4c8d7367cdaaa54f9
iailab-framework/iailab-common-excel/src/main/java/com/iailab/framework/excel/core/handler/SelectSheetWriteHandler.java
@@ -7,24 +7,21 @@
import cn.hutool.core.util.StrUtil;
import cn.hutool.extra.spring.SpringUtil;
import cn.hutool.poi.excel.ExcelUtil;
import com.iailab.framework.common.core.KeyValue;
import com.iailab.framework.dict.core.DictFrameworkUtils;
import com.iailab.framework.excel.core.annotations.ExcelColumnSelect;
import com.iailab.framework.excel.core.function.ExcelColumnSelectFunction;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.write.handler.SheetWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
import com.iailab.framework.common.core.KeyValue;
import com.iailab.framework.dict.core.DictFrameworkUtils;
import com.iailab.framework.excel.core.annotations.ExcelColumnSelect;
import com.iailab.framework.excel.core.function.ExcelColumnSelectFunction;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddressList;
import java.lang.reflect.Field;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.*;
import static com.iailab.framework.common.util.collection.CollectionUtils.convertList;
@@ -38,7 +35,6 @@
    /**
     * 数据起始行从 0 开始
     *
     * 约定:本项目第一行有标题所以从 1 开始如果您的 Excel 有多行标题请自行更改
     */
    public static final int FIRST_ROW = 1;
@@ -54,22 +50,29 @@
     */
    private final Map<Integer, List<String>> selectMap = new HashMap<>();
    public SelectSheetWriteHandler(Class<?> head) {
    private static Boolean ifSetSelect;
    public SelectSheetWriteHandler(Class<?> head, Boolean selectFlag) {
        ifSetSelect = selectFlag;
        // 加载下拉数据获取接口
        Map<String, ExcelColumnSelectFunction> beansMap = SpringUtil.getBeanFactory().getBeansOfType(ExcelColumnSelectFunction.class);
        if (MapUtil.isEmpty(beansMap)) {
            return;
        }
        List<Field> fields = new ArrayList<>();
        for (Class<?> c = head; c != null; c = c.getSuperclass()) {
            Collections.addAll(fields, c.getDeclaredFields());
        }
        // 解析下拉数据
        int colIndex = 0;
        for (Field field : head.getDeclaredFields()) {
        for (Field field : fields) {
            if (field.isAnnotationPresent(ExcelColumnSelect.class)) {
                ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
                if (excelProperty != null && excelProperty.index() != -1) {
                    colIndex = excelProperty.index();
                    getSelectDataList(excelProperty.index(), field);
                }else{
                    getSelectDataList(colIndex, field);
                }
                getSelectDataList(colIndex, field);
            }
            colIndex++;
        }
@@ -106,27 +109,45 @@
        if (CollUtil.isEmpty(selectMap)) {
            return;
        }
        // 1. 获取相应操作对象
        DataValidationHelper helper = writeSheetHolder.getSheet().getDataValidationHelper(); // 需要设置下拉框的 sheet 页的数据验证助手
        Workbook workbook = writeWorkbookHolder.getWorkbook(); // 获得工作簿
        List<KeyValue<Integer, List<String>>> keyValues = convertList(selectMap.entrySet(), entry -> new KeyValue<>(entry.getKey(), entry.getValue()));
        keyValues.sort(Comparator.comparing(item -> item.getValue().size())); // 升序不然创建下拉会报错
        // 2. 创建数据字典的 sheet 页
        Sheet dictSheet = workbook.createSheet(DICT_SHEET_NAME);
        for (KeyValue<Integer, List<String>> keyValue : keyValues) {
            int rowLength = keyValue.getValue().size();
            // 2.1 设置字典 sheet 页的值,每一列一个字典项
            for (int i = 0; i < rowLength; i++) {
                Row row = dictSheet.getRow(i);
                if (row == null) {
                    row = dictSheet.createRow(i);
        if (ifSetSelect){
            for (KeyValue<Integer, List<String>> keyValue : keyValues) {
                /*起始行、终止行、起始列、终止列  起始行为1即表示表头不设置**/
                CellRangeAddressList addressList = new CellRangeAddressList(FIRST_ROW, LAST_ROW, keyValue.getKey(), keyValue.getKey());
                /*设置下拉框数据**/
                DataValidationConstraint constraint = helper.createExplicitListConstraint(keyValue.getValue().toArray(new String[0]));
                DataValidation dataValidation = helper.createValidation(constraint, addressList);
                if (dataValidation instanceof HSSFDataValidation) {
                    dataValidation.setSuppressDropDownArrow(false);
                } else {
                    dataValidation.setSuppressDropDownArrow(true);
                    dataValidation.setShowErrorBox(true);
                }
                row.createCell(keyValue.getKey()).setCellValue(keyValue.getValue().get(i));
                // 2.2 阻止输入非下拉框的值
                dataValidation.setErrorStyle(DataValidation.ErrorStyle.STOP);
                dataValidation.createErrorBox("提示", "此值不存在于下拉选择中!");
                writeSheetHolder.getSheet().addValidationData(dataValidation);
            }
            // 2.2 设置单元格下拉选择
            setColumnSelect(writeSheetHolder, workbook, helper, keyValue);
        }else{
            // 2. 创建数据字典的 sheet 页
            Sheet dictSheet = workbook.createSheet(DICT_SHEET_NAME);
            for (KeyValue<Integer, List<String>> keyValue : keyValues) {
                int rowLength = keyValue.getValue().size();
                // 2.1 设置字典 sheet 页的值,每一列一部字典项
                for (int i = 0; i < rowLength; i++) {
                    Row row = dictSheet.getRow(i);
                    if (row == null) {
                        row = dictSheet.createRow(i);
                    }
                    row.createCell(keyValue.getKey()).setCellValue(keyValue.getValue().get(i));
                }
                // 2.2 设置单元格下拉选择
                setColumnSelect(writeSheetHolder, workbook, helper, keyValue);
            }
        }
    }