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CRM:完善 excel 导出 review 提到的问题
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@ -11,6 +11,9 @@ import lombok.SneakyThrows;
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import lombok.extern.slf4j.Slf4j;
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import java.time.Duration;
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import java.util.List;
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import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
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/**
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* 字典工具类
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@ -38,6 +41,20 @@ public class DictFrameworkUtils {
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});
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/**
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* 针对 {@link #getDictDataLabelList(String)} 的缓存
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*/
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private static final LoadingCache<String, List<String>> GET_DICT_DATA_LIST_CACHE = CacheUtils.buildAsyncReloadingCache(
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Duration.ofMinutes(1L), // 过期时间 1 分钟
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new CacheLoader<String, List<String>>() {
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@Override
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public List<String> load(String dictType) {
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return dictDataApi.getDictDataLabelList(dictType);
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}
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});
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/**
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* 针对 {@link #parseDictDataValue(String, String)} 的缓存
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*/
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@ -67,6 +84,11 @@ public class DictFrameworkUtils {
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return GET_DICT_DATA_CACHE.get(new KeyValue<>(dictType, value)).getLabel();
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}
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@SneakyThrows
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public static List<String> getDictDataLabelList(String dictType) {
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return GET_DICT_DATA_LIST_CACHE.get(dictType);
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}
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@SneakyThrows
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public static String parseDictDataValue(String dictType, String label) {
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return PARSE_DICT_DATA_CACHE.get(new KeyValue<>(dictType, label)).getValue();
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@ -12,9 +12,14 @@ import java.lang.annotation.*;
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@Inherited
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public @interface ExcelColumnSelect {
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/**
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* @return 字典类型
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*/
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String dictType() default "";
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/**
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* @return 获取下拉数据源的方法名称
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*/
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String value();
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String functionName() default "";
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}
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@ -0,0 +1,28 @@
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package cn.iocoder.yudao.framework.excel.core.function;
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import java.util.List;
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/**
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* Excel 列下拉数据源获取接口
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*
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* 为什么不直接解析字典还搞个接口?考虑到有的下拉数据不是从字典中获取的所有需要做一个兼容
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* @author HUIHUI
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*/
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public interface ExcelColumnSelectFunction {
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/**
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* 获得方法名称
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*
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* @return 方法名称
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*/
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String getName();
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/**
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* 获得列下拉数据源
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*
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* @return 下拉数据源
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*/
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List<String> getOptions();
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}
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@ -2,15 +2,19 @@ package cn.iocoder.yudao.framework.excel.core.handler;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.map.MapUtil;
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import cn.hutool.core.util.ObjUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.extra.spring.SpringUtil;
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import cn.hutool.poi.excel.ExcelUtil;
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import cn.iocoder.yudao.framework.common.core.KeyValue;
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import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
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import cn.iocoder.yudao.framework.excel.core.annotations.ExcelColumnSelect;
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import cn.iocoder.yudao.framework.excel.core.service.ExcelColumnSelectDataService;
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import cn.iocoder.yudao.framework.excel.core.function.ExcelColumnSelectFunction;
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import com.alibaba.excel.annotation.ExcelProperty;
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import com.alibaba.excel.write.handler.SheetWriteHandler;
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import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
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import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.poi.hssf.usermodel.HSSFDataValidation;
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import org.apache.poi.ss.usermodel.*;
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import org.apache.poi.ss.util.CellRangeAddressList;
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@ -26,13 +30,9 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
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*
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* @author HUIHUI
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*/
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@Slf4j
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public class SelectSheetWriteHandler implements SheetWriteHandler {
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// TODO @puhui999:注释哈;
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private static final List<String> ALPHABET = getExcelColumnNameList();
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private static final List<ExcelColumnSelectDataService> EXCEL_COLUMN_SELECT_DATA_SERVICES = new ArrayList<>();
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/**
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* 数据起始行从 0 开始
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*
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@ -46,34 +46,35 @@ public class SelectSheetWriteHandler implements SheetWriteHandler {
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private static final String DICT_SHEET_NAME = "字典sheet";
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// TODO @puhui999:这个 selectMap 可以改成 Map<Integer, List<String>>,然后在 afterSheetCreate 里面进行排序。这样整体的理解成本会更简单
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private final List<KeyValue<Integer, List<String>>> selectMap = new ArrayList<>(); // 使用 List + KeyValue 组合方便排序
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/**
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* key: 列 value: 下拉数据源
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*/
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private final Map<Integer, List<String>> selectMap = new HashMap<>();
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public SelectSheetWriteHandler(Class<?> head) {
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// 加载下拉数据获取接口
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Map<String, ExcelColumnSelectDataService> beansMap = SpringUtil.getBeanFactory().getBeansOfType(ExcelColumnSelectDataService.class);
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Map<String, ExcelColumnSelectFunction> beansMap = SpringUtil.getBeanFactory().getBeansOfType(ExcelColumnSelectFunction.class);
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if (MapUtil.isEmpty(beansMap)) {
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return;
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}
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// TODO @puhui999:static 是共享。如果并发情况下,会不会存在问题? 其实 EXCEL_COLUMN_SELECT_DATA_SERVICES 不用全局声明,直接 按照 ExcelColumnSelect 去拿下就好了;
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if (CollUtil.isEmpty(EXCEL_COLUMN_SELECT_DATA_SERVICES) || EXCEL_COLUMN_SELECT_DATA_SERVICES.size() != beansMap.values().size()) {
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EXCEL_COLUMN_SELECT_DATA_SERVICES.clear();
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EXCEL_COLUMN_SELECT_DATA_SERVICES.addAll(convertList(beansMap.values(), b -> b));
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}
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// 解析下拉数据
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// TODO @puhui999:感觉可以 head 循环 field,如果有 ExcelColumnSelect 则进行处理;而 ExcelProperty 可能是非必须的
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// TODO @puhui999:感觉可以 head 循环 field,如果有 ExcelColumnSelect 则进行处理;而 ExcelProperty 可能是非必须的。回答:主要是用于定位到列索引
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Map<String, Field> excelPropertyFields = getFieldsWithAnnotation(head, ExcelProperty.class);
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Map<String, Field> excelColumnSelectFields = getFieldsWithAnnotation(head, ExcelColumnSelect.class);
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int colIndex = 0;
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for (String fieldName : excelPropertyFields.keySet()) {
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Field field = excelColumnSelectFields.get(fieldName);
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if (field != null) {
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// ExcelProperty 有一个自定义列索引的属性 index 兼容这个字段
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int index = field.getAnnotation(ExcelProperty.class).index();
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if (index != -1) {
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colIndex = index;
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}
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getSelectDataList(colIndex, field);
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}
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colIndex++;
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}
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selectMap.sort(Comparator.comparing(item -> item.getValue().size())); // 升序不然创建下拉会报错
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}
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/**
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@ -83,12 +84,25 @@ public class SelectSheetWriteHandler implements SheetWriteHandler {
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* @param field 字段
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*/
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private void getSelectDataList(int colIndex, Field field) {
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EXCEL_COLUMN_SELECT_DATA_SERVICES.forEach(selectDataService -> {
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List<String> stringList = selectDataService.handle(field.getAnnotation(ExcelColumnSelect.class).value());
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if (CollUtil.isEmpty(stringList)) {
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// 获得下拉注解信息
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ExcelColumnSelect columnSelect = field.getAnnotation(ExcelColumnSelect.class);
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String dictType = columnSelect.dictType();
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if (StrUtil.isNotEmpty(dictType)) { // 情况一: 字典数据 (默认)
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selectMap.put(colIndex, DictFrameworkUtils.getDictDataLabelList(dictType));
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return;
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}
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String functionName = columnSelect.functionName();
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if (StrUtil.isEmpty(functionName)) { // 情况二: 获取自定义数据
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log.warn("[getSelectDataList]解析下拉数据失败,参数信息 dictType[{}] functionName[{}]", dictType, functionName);
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return;
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}
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// 获得所有的下拉数据源获取方法
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Map<String, ExcelColumnSelectFunction> functionMap = SpringUtil.getApplicationContext().getBeansOfType(ExcelColumnSelectFunction.class);
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functionMap.values().forEach(func -> {
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if (ObjUtil.notEqual(func.getName(), functionName)) {
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return;
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}
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selectMap.add(new KeyValue<>(colIndex, stringList));
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selectMap.put(colIndex, func.getOptions());
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});
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}
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@ -101,10 +115,11 @@ public class SelectSheetWriteHandler implements SheetWriteHandler {
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// 1. 获取相应操作对象
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DataValidationHelper helper = writeSheetHolder.getSheet().getDataValidationHelper(); // 需要设置下拉框的 sheet 页的数据验证助手
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Workbook workbook = writeWorkbookHolder.getWorkbook(); // 获得工作簿
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List<KeyValue<Integer, List<String>>> keyValues = convertList(selectMap.entrySet(), entry -> new KeyValue<>(entry.getKey(), entry.getValue()));
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keyValues.sort(Comparator.comparing(item -> item.getValue().size())); // 升序不然创建下拉会报错
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// 2. 创建数据字典的 sheet 页
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Sheet dictSheet = workbook.createSheet(DICT_SHEET_NAME);
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for (KeyValue<Integer, List<String>> keyValue : selectMap) {
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for (KeyValue<Integer, List<String>> keyValue : keyValues) {
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int rowLength = keyValue.getValue().size();
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// 2.1 设置字典 sheet 页的值 每一列一个字典项
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for (int i = 0; i < rowLength; i++) {
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@ -126,7 +141,7 @@ public class SelectSheetWriteHandler implements SheetWriteHandler {
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KeyValue<Integer, List<String>> keyValue) {
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// 1.1 创建可被其他单元格引用的名称
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Name name = workbook.createName();
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String excelColumn = ALPHABET.get(keyValue.getKey());
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String excelColumn = ExcelUtil.indexToColName(keyValue.getKey());
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// 1.2 下拉框数据来源 eg:字典sheet!$B1:$B2
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String refers = DICT_SHEET_NAME + "!$" + excelColumn + "$1:$" + excelColumn + "$" + keyValue.getValue().size();
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name.setNameName("dict" + keyValue.getKey()); // 设置名称的名字
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@ -162,18 +177,4 @@ public class SelectSheetWriteHandler implements SheetWriteHandler {
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return annotatedFields;
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}
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private static List<String> getExcelColumnNameList() {
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// TODO @puhui999:是不是可以使用 ExcelUtil.indexToColName() 替代
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ArrayList<String> strings = new ArrayList<>();
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for (int i = 1; i <= 52; i++) { // 生成 52 列名称,需要更多请重写此方法
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if (i <= 26) {
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strings.add(String.valueOf((char) ('A' + i - 1))); // 使用 ASCII 码值转字母
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} else {
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strings.add(String.valueOf((char) ('A' + (i - 1) / 26 - 1)) + (char) ('A' + (i - 1) % 26));
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}
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}
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return strings;
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}
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}
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@ -1,43 +0,0 @@
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package cn.iocoder.yudao.framework.excel.core.service;
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import cn.hutool.core.util.StrUtil;
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import java.util.Collections;
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import java.util.List;
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/**
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* Excel 列下拉数据源获取接口
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*
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* 为什么不直接解析字典还搞个接口?考虑到有的下拉数据不是从字典中获取的所有需要做一个兼容
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* TODO @puhui999:是不是 @ExcelColumnSelect 可以搞两个属性,一个 dictType,一个 functionName;如果 dictType,则默认走字典,否则走 functionName
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* 这样的话,ExcelColumnSelectDataService 改成 ExcelColumnSelectFunction 用于获取数据。
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*
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* @author HUIHUI
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*/
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public interface ExcelColumnSelectDataService {
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// TODO @puhui999:可以考虑改成 getName
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/**
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* 获得方法名称
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*
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* @return 方法名称
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*/
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String getFunctionName();
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// TODO @puhui999:可以考虑改成 getOptions;因为 select 下面是 option 哈,和前端 html 类似的标签;
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/**
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* 获得列下拉数据源
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*
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* @return 下拉数据源
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*/
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List<String> getSelectDataList();
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// TODO @puhui999:这个建议放到 SelectSheetWriteHandler 里
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default List<String> handle(String funcName) {
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if (StrUtil.isEmptyIfStr(funcName) || !StrUtil.equals(getFunctionName(), funcName)) {
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return Collections.emptyList();
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}
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return getSelectDataList();
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}
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}
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