新增EasyExcel枚举类数据翻译注解

ruoyi-common/src/main/java/com/ruoyi/common/annotation/ExcelEnumFormat.java

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+package com.ruoyi.common.annotation;
+
+import java.lang.annotation.*;
+
+/**
+ * 枚举格式化
+ *
+ * @author Liang
+ */
+@Target({ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+@Inherited
+public @interface ExcelEnumFormat {
+
+    /**
+     * 字典枚举类型
+     */
+    Class<? extends Enum<?>> enumClass();
+
+    /**
+     * 字典枚举类中对应的code属性名称，默认为code
+     */
+    String codeField() default "code";
+
+    /**
+     * 字典枚举类中对应的text属性名称，默认为text
+     */
+    String textField() default "text";
+
+}

ruoyi-common/src/main/java/com/ruoyi/common/convert/ExcelEnumConvert.java

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+package com.ruoyi.common.convert;
+
+import cn.hutool.core.annotation.AnnotationUtil;
+import cn.hutool.core.convert.Convert;
+import cn.hutool.core.util.ObjectUtil;
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.enums.CellDataTypeEnum;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.data.ReadCellData;
+import com.alibaba.excel.metadata.data.WriteCellData;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+import com.ruoyi.common.annotation.ExcelEnumFormat;
+import lombok.extern.slf4j.Slf4j;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 枚举格式化转换处理
+ *
+ * @author Liang
+ */
+@Slf4j
+public class ExcelEnumConvert implements Converter<Object> {
+
+    @Override
+    public Class<Object> supportJavaTypeKey() {
+        return Object.class;
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        return null;
+    }
+
+    @Override
+    public Object convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+        beforeConverter(contentProperty);
+        Object codeValue = cellData.getData();
+        // 如果是空值
+        if (ObjectUtil.isNull(codeValue)) {
+            return null;
+        }
+        Map<Object, String> enumValueMap = beforeConverter(contentProperty);
+        String textValue = enumValueMap.get(codeValue);
+        return Convert.convert(contentProperty.getField().getType(), textValue);
+    }
+
+    @Override
+    public WriteCellData<String> convertToExcelData(Object object, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+        if (ObjectUtil.isNull(object)) {
+            return new WriteCellData<>("");
+        }
+        Map<Object, String> enumValueMap = beforeConverter(contentProperty);
+        String value = Convert.toStr(enumValueMap.get(object));
+        return new WriteCellData<>(value);
+    }
+
+    private Map<Object, String> beforeConverter(ExcelContentProperty contentProperty) {
+        ExcelEnumFormat anno = getAnnotation(contentProperty.getField());
+        Map<Object, String> enumValueMap = new HashMap<>();
+        Enum<?>[] enumConstants = anno.enumClass().getEnumConstants();
+        for (Enum<?> enumConstant : enumConstants) {
+            try {
+                Field codeFieldObj = enumConstant.getClass().getDeclaredField(anno.codeField());
+                codeFieldObj.setAccessible(true);
+                Object codeValue = codeFieldObj.get(enumConstant);
+                Field textFieldObj = enumConstant.getClass().getDeclaredField(anno.textField());
+                textFieldObj.setAccessible(true);
+                String textValue = (String) textFieldObj.get(enumConstant);
+                enumValueMap.put(codeValue, textValue);
+            } catch (NoSuchFieldException | IllegalAccessException e) {
+                log.error("枚举格式化转换处理异常", e);
+                throw new RuntimeException("枚举格式化转换处理异常");
+            }
+        }
+        return enumValueMap;
+    }
+
+    private ExcelEnumFormat getAnnotation(Field field) {
+        return AnnotationUtil.getAnnotation(field, ExcelEnumFormat.class);
+    }
+}