第一次提交

yudao-framework/yudao-spring-boot-starter-excel/pom.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>cn.iocoder.boot</groupId>
+        <artifactId>yudao-framework</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>yudao-spring-boot-starter-excel</artifactId>
+    <packaging>jar</packaging>
+
+    <name>${project.artifactId}</name>
+    <description>Excel 拓展</description>
+    <url>https://github.com/YunaiV/ruoyi-vue-pro</url>
+
+    <dependencies>
+        <dependency>
+            <groupId>cn.iocoder.boot</groupId>
+            <artifactId>yudao-common</artifactId>
+        </dependency>
+
+        <!-- Spring 核心 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <!-- Web 相关 -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <scope>provided</scope> <!-- 设置为 provided，只有 ExcelUtils 使用 -->
+        </dependency>
+
+        <dependency>
+            <groupId>jakarta.servlet</groupId>
+            <artifactId>jakarta.servlet-api</artifactId>
+            <scope>provided</scope> <!-- 设置为 provided，只有 ExcelUtils 使用 -->
+        </dependency>
+
+        <!-- 工具类相关 -->
+        <dependency>
+            <groupId>cn.idev.excel</groupId>
+            <artifactId>fastexcel</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>jakarta.validation</groupId>
+            <artifactId>jakarta.validation-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>cn.iocoder.boot</groupId>
+            <artifactId>yudao-spring-boot-starter-biz-ip</artifactId>
+            <optional>true</optional> <!-- 设置为 optional，只有在 AreaConvert 的时候使用 -->
+        </dependency>
+
+        <!-- Test 测试相关 -->
+        <dependency>
+            <groupId>cn.iocoder.boot</groupId>
+            <artifactId>yudao-spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/config/YudaoDictAutoConfiguration.java

@@ -0,0 +1,18 @@
+package cn.iocoder.yudao.framework.dict.config;
+
+import cn.iocoder.yudao.framework.common.biz.system.dict.DictDataCommonApi;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.context.annotation.Bean;
+
+@AutoConfiguration
+public class YudaoDictAutoConfiguration {
+
+    @Bean
+    @SuppressWarnings("InstantiationOfUtilityClass")
+    public DictFrameworkUtils dictUtils(DictDataCommonApi dictDataApi) {
+        DictFrameworkUtils.init(dictDataApi);
+        return new DictFrameworkUtils();
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/core/DictFrameworkUtils.java

@@ -0,0 +1,84 @@
+package cn.iocoder.yudao.framework.dict.core;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.iocoder.yudao.framework.common.biz.system.dict.DictDataCommonApi;
+import cn.iocoder.yudao.framework.common.util.cache.CacheUtils;
+import cn.iocoder.yudao.framework.common.biz.system.dict.dto.DictDataRespDTO;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import lombok.SneakyThrows;
+import lombok.extern.slf4j.Slf4j;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Objects;
+
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
+
+/**
+ * 字典工具类
+ *
+ * @author 芋道源码
+ */
+@Slf4j
+public class DictFrameworkUtils {
+
+    private static DictDataCommonApi dictDataApi;
+
+    /**
+     * 针对 dictType 的字段数据缓存
+     */
+    private static final LoadingCache<String, List<DictDataRespDTO>> GET_DICT_DATA_CACHE = CacheUtils.buildAsyncReloadingCache(
+            Duration.ofMinutes(1L), // 过期时间 1 分钟
+            new CacheLoader<String, List<DictDataRespDTO>>() {
+
+                @Override
+                public List<DictDataRespDTO> load(String dictType) {
+                    return dictDataApi.getDictDataList(dictType);
+                }
+
+            });
+
+    public static void init(DictDataCommonApi dictDataApi) {
+        DictFrameworkUtils.dictDataApi = dictDataApi;
+        log.info("[init][初始化 DictFrameworkUtils 成功]");
+    }
+
+    public static void clearCache() {
+        GET_DICT_DATA_CACHE.invalidateAll();
+    }
+
+    @SneakyThrows
+    public static String parseDictDataLabel(String dictType, Integer value) {
+        if (value == null) {
+            return null;
+        }
+        return parseDictDataLabel(dictType, String.valueOf(value));
+    }
+
+    @SneakyThrows
+    public static String parseDictDataLabel(String dictType, String value) {
+        List<DictDataRespDTO> dictDatas = GET_DICT_DATA_CACHE.get(dictType);
+        DictDataRespDTO dictData = CollUtil.findOne(dictDatas, data -> Objects.equals(data.getValue(), value));
+        return dictData != null ? dictData.getLabel(): null;
+    }
+
+    @SneakyThrows
+    public static List<String> getDictDataLabelList(String dictType) {
+        List<DictDataRespDTO> dictDatas = GET_DICT_DATA_CACHE.get(dictType);
+        return convertList(dictDatas, DictDataRespDTO::getLabel);
+    }
+
+    @SneakyThrows
+    public static String parseDictDataValue(String dictType, String label) {
+        List<DictDataRespDTO> dictDatas = GET_DICT_DATA_CACHE.get(dictType);
+        DictDataRespDTO dictData = CollUtil.findOne(dictDatas, data -> Objects.equals(data.getLabel(), label));
+        return dictData!= null ? dictData.getValue(): null;
+    }
+
+    @SneakyThrows
+    public static List<String> getDictDataValueList(String dictType) {
+        List<DictDataRespDTO> dictDatas = GET_DICT_DATA_CACHE.get(dictType);
+        return convertList(dictDatas, DictDataRespDTO::getValue);
+    }
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * 字典数据模块，提供 {@link cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils} 工具类
+ *
+ * 通过将字典缓存在内存中，保证性能
+ */
+package cn.iocoder.yudao.framework.dict;

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/validation/InDict.java

@@ -0,0 +1,33 @@
+package cn.iocoder.yudao.framework.dict.validation;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import java.lang.annotation.*;
+
+@Target({
+        ElementType.METHOD,
+        ElementType.FIELD,
+        ElementType.ANNOTATION_TYPE,
+        ElementType.CONSTRUCTOR,
+        ElementType.PARAMETER,
+        ElementType.TYPE_USE
+})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Constraint(
+        validatedBy = {InDictValidator.class, InDictCollectionValidator.class}
+)
+public @interface InDict {
+
+    /**
+     * 数据字典 type
+     */
+    String type();
+
+    String message() default "必须在指定范围 {value}";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/validation/InDictCollectionValidator.java

@@ -0,0 +1,43 @@
+package cn.iocoder.yudao.framework.dict.validation;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+import java.util.Collection;
+import java.util.List;
+
+public class InDictCollectionValidator implements ConstraintValidator<InDict, Collection<?>> {
+
+    private String dictType;
+
+    @Override
+    public void initialize(InDict annotation) {
+        this.dictType = annotation.type();
+    }
+
+    @Override
+    public boolean isValid(Collection<?> list, ConstraintValidatorContext context) {
+        // 为空时，默认不校验，即认为通过
+        if (CollUtil.isEmpty(list)) {
+            return true;
+        }
+        // 校验全部通过
+        List<String> dbValues = DictFrameworkUtils.getDictDataValueList(dictType);
+        boolean match = list.stream().allMatch(v -> dbValues.stream()
+                .anyMatch(dbValue -> dbValue.equalsIgnoreCase(v.toString())));
+        if (match) {
+            return true;
+        }
+
+        // 校验不通过，自定义提示语句
+        context.disableDefaultConstraintViolation(); // 禁用默认的 message 的值
+        context.buildConstraintViolationWithTemplate(
+                context.getDefaultConstraintMessageTemplate().replaceAll("\\{value}", dbValues.toString())
+        ).addConstraintViolation(); // 重新添加错误提示语句
+        return false;
+    }
+
+}
+

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/dict/validation/InDictValidator.java

@@ -0,0 +1,41 @@
+package cn.iocoder.yudao.framework.dict.validation;
+
+import cn.hutool.core.util.StrUtil;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+import java.util.List;
+
+public class InDictValidator implements ConstraintValidator<InDict, Object> {
+
+    private String dictType;
+
+    @Override
+    public void initialize(InDict annotation) {
+        this.dictType = annotation.type();
+    }
+
+    @Override
+    public boolean isValid(Object value, ConstraintValidatorContext context) {
+        // 为空时，默认不校验，即认为通过
+        if (value == null) {
+            return true;
+        }
+        // 校验通过
+        final List<String> values = DictFrameworkUtils.getDictDataValueList(dictType);
+        boolean match = values.stream().anyMatch(v -> StrUtil.equalsIgnoreCase(v, value.toString()));
+        if (match) {
+            return true;
+        }
+
+        // 校验不通过，自定义提示语句
+        context.disableDefaultConstraintViolation(); // 禁用默认的 message 的值
+        context.buildConstraintViolationWithTemplate(
+                context.getDefaultConstraintMessageTemplate().replaceAll("\\{value}", values.toString())
+        ).addConstraintViolation(); // 重新添加错误提示语句
+        return false;
+    }
+
+}
+

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/annotations/DictFormat.java

@@ -0,0 +1,22 @@
+package cn.iocoder.yudao.framework.excel.core.annotations;
+
+import java.lang.annotation.*;
+
+/**
+ * 字典格式化
+ *
+ * 实现将字典数据的值，格式化成字典数据的标签
+ */
+@Target({ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+public @interface DictFormat {
+
+    /**
+     * 例如说，SysDictTypeConstants、InfDictTypeConstants
+     *
+     * @return 字典类型
+     */
+    String value();
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/annotations/ExcelColumnSelect.java

@@ -0,0 +1,27 @@
+package cn.iocoder.yudao.framework.excel.core.annotations;
+
+import java.lang.annotation.*;
+
+/**
+ * 给 Excel 列添加下拉选择数据
+ *
+ * 其中 {@link #dictType()} 和 {@link #functionName()} 二选一
+ *
+ * @author HUIHUI
+ */
+@Target({ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+public @interface ExcelColumnSelect {
+
+    /**
+     * @return 字典类型
+     */
+    String dictType() default "";
+
+    /**
+     * @return 获取下拉数据源的方法名称
+     */
+    String functionName() default "";
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/convert/AreaConvert.java

@@ -0,0 +1,46 @@
+package cn.iocoder.yudao.framework.excel.core.convert;
+
+import cn.hutool.core.convert.Convert;
+import cn.iocoder.yudao.framework.ip.core.Area;
+import cn.iocoder.yudao.framework.ip.core.utils.AreaUtils;
+import cn.idev.excel.converters.Converter;
+import cn.idev.excel.enums.CellDataTypeEnum;
+import cn.idev.excel.metadata.GlobalConfiguration;
+import cn.idev.excel.metadata.data.ReadCellData;
+import cn.idev.excel.metadata.property.ExcelContentProperty;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * Excel 数据地区转换器
+ *
+ * @author HUIHUI
+ */
+@Slf4j
+public class AreaConvert implements Converter<Object> {
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public Object convertToJavaData(ReadCellData readCellData, ExcelContentProperty contentProperty,
+                                    GlobalConfiguration globalConfiguration) {
+        // 解析地区编号
+        String label = readCellData.getStringValue();
+        Area area = AreaUtils.parseArea(label);
+        if (area == null) {
+            log.error("[convertToJavaData][label({}) 解析不掉]", label);
+            return null;
+        }
+        // 将 value 转换成对应的属性
+        Class<?> fieldClazz = contentProperty.getField().getType();
+        return Convert.convert(fieldClazz, area.getId());
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/convert/DictConvert.java

@@ -0,0 +1,72 @@
+package cn.iocoder.yudao.framework.excel.core.convert;
+
+import cn.hutool.core.convert.Convert;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+import cn.iocoder.yudao.framework.excel.core.annotations.DictFormat;
+import cn.idev.excel.converters.Converter;
+import cn.idev.excel.enums.CellDataTypeEnum;
+import cn.idev.excel.metadata.GlobalConfiguration;
+import cn.idev.excel.metadata.data.ReadCellData;
+import cn.idev.excel.metadata.data.WriteCellData;
+import cn.idev.excel.metadata.property.ExcelContentProperty;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * Excel 数据字典转换器
+ *
+ * @author 芋道源码
+ */
+@Slf4j
+public class DictConvert implements Converter<Object> {
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public Object convertToJavaData(ReadCellData readCellData, ExcelContentProperty contentProperty,
+                                    GlobalConfiguration globalConfiguration) {
+        // 使用字典解析
+        String type = getType(contentProperty);
+        String label = readCellData.getStringValue();
+        String value = DictFrameworkUtils.parseDictDataValue(type, label);
+        if (value == null) {
+            log.error("[convertToJavaData][type({}) 解析不掉 label({})]", type, label);
+            return null;
+        }
+        // 将 String 的 value 转换成对应的属性
+        Class<?> fieldClazz = contentProperty.getField().getType();
+        return Convert.convert(fieldClazz, value);
+    }
+
+    @Override
+    public WriteCellData<String> convertToExcelData(Object object, ExcelContentProperty contentProperty,
+                                                    GlobalConfiguration globalConfiguration) {
+        // 空时，返回空
+        if (object == null) {
+            return new WriteCellData<>("");
+        }
+
+        // 使用字典格式化
+        String type = getType(contentProperty);
+        String value = String.valueOf(object);
+        String label = DictFrameworkUtils.parseDictDataLabel(type, value);
+        if (label == null) {
+            log.error("[convertToExcelData][type({}) 转换不了 label({})]", type, value);
+            return new WriteCellData<>("");
+        }
+        // 生成 Excel 小表格
+        return new WriteCellData<>(label);
+    }
+
+    private static String getType(ExcelContentProperty contentProperty) {
+        return contentProperty.getField().getAnnotation(DictFormat.class).value();
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/convert/JsonConvert.java

@@ -0,0 +1,34 @@
+package cn.iocoder.yudao.framework.excel.core.convert;
+
+import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
+import cn.idev.excel.converters.Converter;
+import cn.idev.excel.enums.CellDataTypeEnum;
+import cn.idev.excel.metadata.GlobalConfiguration;
+import cn.idev.excel.metadata.data.WriteCellData;
+import cn.idev.excel.metadata.property.ExcelContentProperty;
+
+/**
+ * Excel Json 转换器
+ *
+ * @author 芋道源码
+ */
+public class JsonConvert implements Converter<Object> {
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public WriteCellData<String> convertToExcelData(Object value, ExcelContentProperty contentProperty,
+                                                    GlobalConfiguration globalConfiguration) {
+        // 生成 Excel 小表格
+        return new WriteCellData<>(JsonUtils.toJsonString(value));
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/convert/MoneyConvert.java

@@ -0,0 +1,39 @@
+package cn.iocoder.yudao.framework.excel.core.convert;
+
+import cn.idev.excel.converters.Converter;
+import cn.idev.excel.enums.CellDataTypeEnum;
+import cn.idev.excel.metadata.GlobalConfiguration;
+import cn.idev.excel.metadata.data.WriteCellData;
+import cn.idev.excel.metadata.property.ExcelContentProperty;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+/**
+ * 金额转换器
+ *
+ * 金额单位：分
+ *
+ * @author 芋道源码
+ */
+public class MoneyConvert implements Converter<Integer> {
+
+    @Override
+    public Class<?> supportJavaTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        throw new UnsupportedOperationException("暂不支持，也不需要");
+    }
+
+    @Override
+    public WriteCellData<String> convertToExcelData(Integer value, ExcelContentProperty contentProperty,
+                                                    GlobalConfiguration globalConfiguration) {
+        BigDecimal result = BigDecimal.valueOf(value)
+                .divide(new BigDecimal(100), 2, RoundingMode.HALF_UP);
+        return new WriteCellData<>(result.toString());
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/function/ExcelColumnSelectFunction.java

@@ -0,0 +1,28 @@
+package cn.iocoder.yudao.framework.excel.core.function;
+
+import java.util.List;
+
+/**
+ * Excel 列下拉数据源获取接口
+ *
+ * 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
+
+ * @author HUIHUI
+ */
+public interface ExcelColumnSelectFunction {
+
+    /**
+     * 获得方法名称
+     *
+     * @return 方法名称
+     */
+    String getName();
+
+    /**
+     * 获得列下拉数据源
+     *
+     * @return 下拉数据源
+     */
+    List<String> getOptions();
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/handler/ColumnWidthMatchStyleStrategy.java

@@ -0,0 +1,78 @@
+package cn.iocoder.yudao.framework.excel.core.handler;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.idev.excel.enums.CellDataTypeEnum;
+import cn.idev.excel.metadata.Head;
+import cn.idev.excel.metadata.data.WriteCellData;
+import cn.idev.excel.util.MapUtils;
+import cn.idev.excel.write.metadata.holder.WriteSheetHolder;
+import cn.idev.excel.write.style.column.AbstractColumnWidthStyleStrategy;
+import cn.idev.excel.write.style.column.LongestMatchColumnWidthStyleStrategy;
+import org.apache.poi.ss.usermodel.Cell;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Excel 自适应列宽处理器
+ *
+ * 相比 {@link LongestMatchColumnWidthStyleStrategy} 来说，额外处理了 DATE 类型！
+ *
+ * @see <a href="https://github.com/YunaiV/yudao-cloud/pull/196/">添加自适应列宽处理器，并替换默认列宽策略</a>
+ * @author hmb
+ */
+public class ColumnWidthMatchStyleStrategy extends AbstractColumnWidthStyleStrategy {
+
+    private static final int MAX_COLUMN_WIDTH = 255;
+
+    private final Map<Integer, Map<Integer, Integer>> cache = MapUtils.newHashMapWithExpectedSize(8);
+
+    @Override
+    protected void setColumnWidth(WriteSheetHolder writeSheetHolder, List<WriteCellData<?>> cellDataList, Cell cell,
+                                  Head head, Integer relativeRowIndex, Boolean isHead) {
+        boolean needSetWidth = isHead || CollUtil.isNotEmpty(cellDataList);
+        if (!needSetWidth) {
+            return;
+        }
+        Map<Integer, Integer> maxColumnWidthMap = cache.computeIfAbsent(writeSheetHolder.getSheetNo(),
+                key -> new HashMap<>(16));
+        Integer columnWidth = dataLength(cellDataList, cell, isHead);
+        if (columnWidth < 0) {
+            return;
+        }
+        if (columnWidth > MAX_COLUMN_WIDTH) {
+            columnWidth = MAX_COLUMN_WIDTH;
+        }
+        Integer maxColumnWidth = maxColumnWidthMap.get(cell.getColumnIndex());
+        if (maxColumnWidth == null || columnWidth > maxColumnWidth) {
+            maxColumnWidthMap.put(cell.getColumnIndex(), columnWidth);
+            writeSheetHolder.getSheet().setColumnWidth(cell.getColumnIndex(), columnWidth * 256);
+        }
+    }
+
+    @SuppressWarnings("EnhancedSwitchMigration")
+    private Integer dataLength(List<WriteCellData<?>> cellDataList, Cell cell, Boolean isHead) {
+        if (isHead) {
+            return cell.getStringCellValue().getBytes().length;
+        }
+        WriteCellData<?> cellData = cellDataList.get(0);
+        CellDataTypeEnum type = cellData.getType();
+        if (type == null) {
+            return -1;
+        }
+        switch (type) {
+            case STRING:
+                return cellData.getStringValue().getBytes().length;
+            case BOOLEAN:
+                return cellData.getBooleanValue().toString().getBytes().length;
+            case NUMBER:
+                return cellData.getNumberValue().toString().getBytes().length;
+            case DATE:
+                return cellData.getDateValue().toString().getBytes().length;
+            default:
+                return -1;
+        }
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/handler/SelectSheetWriteHandler.java

@@ -0,0 +1,187 @@
+package cn.iocoder.yudao.framework.excel.core.handler;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.lang.Assert;
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
+import cn.hutool.extra.spring.SpringUtil;
+import cn.hutool.poi.excel.ExcelUtil;
+import cn.iocoder.yudao.framework.common.core.KeyValue;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+import cn.iocoder.yudao.framework.excel.core.annotations.ExcelColumnSelect;
+import cn.iocoder.yudao.framework.excel.core.function.ExcelColumnSelectFunction;
+import cn.idev.excel.annotation.ExcelIgnore;
+import cn.idev.excel.annotation.ExcelIgnoreUnannotated;
+import cn.idev.excel.annotation.ExcelProperty;
+import cn.idev.excel.write.handler.SheetWriteHandler;
+import cn.idev.excel.write.metadata.holder.WriteSheetHolder;
+import cn.idev.excel.write.metadata.holder.WriteWorkbookHolder;
+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.lang.reflect.Modifier;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
+
+/**
+ * 基于固定 sheet 实现下拉框
+ *
+ * @author HUIHUI
+ */
+@Slf4j
+public class SelectSheetWriteHandler implements SheetWriteHandler {
+
+    /**
+     * 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;
+    /**
+     * 下拉列需要创建下拉框的行数，默认两千行如需更多请自行调整
+     */
+    public static final int LAST_ROW = 2000;
+
+    private static final String DICT_SHEET_NAME = "字典sheet";
+
+    /**
+     * key: 列 value: 下拉数据源
+     */
+    private final Map<Integer, List<String>> selectMap = new HashMap<>();
+
+    public SelectSheetWriteHandler(Class<?> head) {
+        // 解析下拉数据
+        int colIndex = 0;
+        boolean ignoreUnannotated = head.isAnnotationPresent(ExcelIgnoreUnannotated.class);
+        for (Field field : head.getDeclaredFields()) {
+            // 关联 https://github.com/YunaiV/ruoyi-vue-pro/pull/853
+            // 1.1 忽略 static final 或 transient 的字段
+            if (isStaticFinalOrTransient(field) ) {
+                continue;
+            }
+            // 1.2 忽略的字段跳过
+            if ((ignoreUnannotated && !field.isAnnotationPresent(ExcelProperty.class))
+                    || field.isAnnotationPresent(ExcelIgnore.class)) {
+                continue;
+            }
+
+            // 2. 核心：处理有 ExcelColumnSelect 注解的字段
+            if (field.isAnnotationPresent(ExcelColumnSelect.class)) {
+                ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class);
+                if (excelProperty != null && excelProperty.index() != -1) {
+                    colIndex = excelProperty.index();
+                }
+                getSelectDataList(colIndex, field);
+            }
+            colIndex++;
+        }
+    }
+
+    /**
+     * 判断字段是否是静态的、最终的、 transient 的
+     * 原因：FastExcel 默认是忽略 static final 或 transient 的字段，所以需要判断
+     *
+     * @param field 字段
+     * @return 是否是静态的、最终的、transient 的
+     */
+    private boolean isStaticFinalOrTransient(Field field) {
+        return (Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers()))
+                || Modifier.isTransient(field.getModifiers());
+    }
+
+
+    /**
+     * 获得下拉数据，并添加到 {@link #selectMap} 中
+     *
+     * @param colIndex 列索引
+     * @param field    字段
+     */
+    private void getSelectDataList(int colIndex, Field field) {
+        ExcelColumnSelect columnSelect = field.getAnnotation(ExcelColumnSelect.class);
+        String dictType = columnSelect.dictType();
+        String functionName = columnSelect.functionName();
+        Assert.isTrue(ObjectUtil.isNotEmpty(dictType) || ObjectUtil.isNotEmpty(functionName),
+                "Field({}) 的 @ExcelColumnSelect 注解，dictType 和 functionName 不能同时为空", field.getName());
+
+        // 情况一：使用 dictType 获得下拉数据
+        if (StrUtil.isNotEmpty(dictType)) { // 情况一： 字典数据 （默认）
+            selectMap.put(colIndex, DictFrameworkUtils.getDictDataLabelList(dictType));
+            return;
+        }
+
+        // 情况二：使用 functionName 获得下拉数据
+        Map<String, ExcelColumnSelectFunction> functionMap = SpringUtil.getApplicationContext().getBeansOfType(ExcelColumnSelectFunction.class);
+        ExcelColumnSelectFunction function = CollUtil.findOne(functionMap.values(), item -> item.getName().equals(functionName));
+        Assert.notNull(function, "未找到对应的 function({})", functionName);
+        selectMap.put(colIndex, function.getOptions());
+    }
+
+    @Override
+    public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {
+        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);
+                }
+                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);
+        }
+    }
+
+    /**
+     * 设置单元格下拉选择
+     */
+    private static void setColumnSelect(WriteSheetHolder writeSheetHolder, Workbook workbook, DataValidationHelper helper,
+                                        KeyValue<Integer, List<String>> keyValue) {
+        // 1.1 创建可被其他单元格引用的名称
+        Name name = workbook.createName();
+        String excelColumn = ExcelUtil.indexToColName(keyValue.getKey());
+        // 1.2 下拉框数据来源 eg:字典sheet!$B1:$B2
+        String refers = DICT_SHEET_NAME + "!$" + excelColumn + "$1:$" + excelColumn + "$" + keyValue.getValue().size();
+        name.setNameName("dict" + keyValue.getKey()); // 设置名称的名字
+        name.setRefersToFormula(refers); // 设置公式
+
+        // 2.1 设置约束
+        DataValidationConstraint constraint = helper.createFormulaListConstraint("dict" + keyValue.getKey()); // 设置引用约束
+        // 设置下拉单元格的首行、末行、首列、末列
+        CellRangeAddressList rangeAddressList = new CellRangeAddressList(FIRST_ROW, LAST_ROW,
+                keyValue.getKey(), keyValue.getKey());
+        DataValidation validation = helper.createValidation(constraint, rangeAddressList);
+        if (validation instanceof HSSFDataValidation) {
+            validation.setSuppressDropDownArrow(false);
+        } else {
+            validation.setSuppressDropDownArrow(true);
+            validation.setShowErrorBox(true);
+        }
+        // 2.2 阻止输入非下拉框的值
+        validation.setErrorStyle(DataValidation.ErrorStyle.STOP);
+        validation.createErrorBox("提示", "此值不存在于下拉选择中！");
+        // 2.3 添加下拉框约束
+        writeSheetHolder.getSheet().addValidationData(validation);
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/core/util/ExcelUtils.java

@@ -0,0 +1,52 @@
+package cn.iocoder.yudao.framework.excel.core.util;
+
+import cn.idev.excel.FastExcelFactory;
+import cn.idev.excel.converters.longconverter.LongStringConverter;
+import cn.iocoder.yudao.framework.common.util.http.HttpUtils;
+import cn.iocoder.yudao.framework.excel.core.handler.ColumnWidthMatchStyleStrategy;
+import cn.iocoder.yudao.framework.excel.core.handler.SelectSheetWriteHandler;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Excel 工具类
+ *
+ * @author 芋道源码
+ */
+public class ExcelUtils {
+
+    /**
+     * 将列表以 Excel 响应给前端
+     *
+     * @param response  响应
+     * @param filename  文件名
+     * @param sheetName Excel sheet 名
+     * @param head      Excel head 头
+     * @param data      数据列表哦
+     * @param <T>       泛型，保证 head 和 data 类型的一致性
+     * @throws IOException 写入失败的情况
+     */
+    public static <T> void write(HttpServletResponse response, String filename, String sheetName,
+                                 Class<T> head, List<T> data) throws IOException {
+        // 输出 Excel
+        FastExcelFactory.write(response.getOutputStream(), head)
+                .autoCloseStream(false) // 不要自动关闭，交给 Servlet 自己处理
+                .registerWriteHandler(new ColumnWidthMatchStyleStrategy()) // 基于 column 长度，自动适配。最大 255 宽度
+                .registerWriteHandler(new SelectSheetWriteHandler(head)) // 基于固定 sheet 实现下拉框
+                .registerConverter(new LongStringConverter()) // 避免 Long 类型丢失精度
+                .sheet(sheetName).doWrite(data);
+        // 设置 header 和 contentType。写在最后的原因是，避免报错时，响应 contentType 已经被修改了
+        response.addHeader("Content-Disposition", "attachment;filename=" + HttpUtils.encodeUtf8(filename));
+        response.setContentType("application/vnd.ms-excel;charset=UTF-8");
+    }
+
+    public static <T> List<T> read(MultipartFile file, Class<T> head) throws IOException {
+        return FastExcelFactory.read(file.getInputStream(), head, null)
+                .autoCloseStream(false)  // 不要自动关闭，交给 Servlet 自己处理
+                .doReadAllSync();
+    }
+
+}

yudao-framework/yudao-spring-boot-starter-excel/src/main/java/cn/iocoder/yudao/framework/excel/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * 基于 FastExcel 实现 Excel 相关的操作
+ */
+package cn.iocoder.yudao.framework.excel;

yudao-framework/yudao-spring-boot-starter-excel/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -0,0 +1 @@
+cn.iocoder.yudao.framework.dict.config.YudaoDictAutoConfiguration

yudao-framework/yudao-spring-boot-starter-excel/src/test/java/cn/iocoder/yudao/framework/dict/core/util/DictFrameworkUtilsTest.java

@@ -0,0 +1,61 @@
+package cn.iocoder.yudao.framework.dict.core.util;
+
+import cn.hutool.core.collection.ListUtil;
+import cn.iocoder.yudao.framework.common.biz.system.dict.DictDataCommonApi;
+import cn.iocoder.yudao.framework.common.biz.system.dict.dto.DictDataRespDTO;
+import cn.iocoder.yudao.framework.dict.core.DictFrameworkUtils;
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+
+import java.util.List;
+
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
+
+/**
+ * {@link DictFrameworkUtils} 的单元测试
+ */
+public class DictFrameworkUtilsTest extends BaseMockitoUnitTest {
+
+    @Mock
+    private DictDataCommonApi dictDataApi;
+
+    @BeforeEach
+    public void setUp() {
+        DictFrameworkUtils.init(dictDataApi);
+        DictFrameworkUtils.clearCache();
+    }
+
+    @Test
+    public void testParseDictDataLabel() {
+        // mock 数据
+        List<DictDataRespDTO> dictDatas = ListUtil.of(
+                randomPojo(DictDataRespDTO.class, o -> o.setDictType("animal").setValue("cat").setLabel("猫")),
+                randomPojo(DictDataRespDTO.class, o -> o.setDictType("animal").setValue("dog").setLabel("狗"))
+        );
+        // mock 方法
+        when(dictDataApi.getDictDataList(eq("animal"))).thenReturn(dictDatas);
+
+        // 断言返回值
+        assertEquals("狗", DictFrameworkUtils.parseDictDataLabel("animal", "dog"));
+    }
+
+    @Test
+    public void testParseDictDataValue() {
+        // mock 数据
+        List<DictDataRespDTO> dictDatas = ListUtil.of(
+                randomPojo(DictDataRespDTO.class, o -> o.setDictType("animal").setValue("cat").setLabel("猫")),
+                randomPojo(DictDataRespDTO.class, o -> o.setDictType("animal").setValue("dog").setLabel("狗"))
+        );
+        // mock 方法
+        when(dictDataApi.getDictDataList(eq("animal"))).thenReturn(dictDatas);
+
+        // 断言返回值
+        assertEquals("dog", DictFrameworkUtils.parseDictDataValue("animal", "狗"));
+    }
+
+}