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实体类字段使用EasyExcel提供的注解@ExcelProperty，value 值写成占位符形式 ，匹配 i18n 文件里面的编码。
如：

/*** 仓库名称*/
@ExcelProperty("{warehouse.record.warehouseName}")
private String warehouseName;

占位符解析器

@AllArgsConstructor(access = AccessLevel.PRIVATE)
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class PlaceholderResolver {/*** 默认前缀占位符*/public static final String DEFAULT_PLACEHOLDER_PREFIX = "{";/*** 默认后缀占位符*/public static final String DEFAULT_PLACEHOLDER_SUFFIX = "}";/*** 默认单例占位符解析器，即占位符前缀为"{", 后缀为"}"*/@Getterprivate static final PlaceholderResolver defaultResolver = new PlaceholderResolver();/*** 占位符前缀*/private String placeholderPrefix = DEFAULT_PLACEHOLDER_PREFIX;/*** 占位符后缀*/private String placeholderSuffix = DEFAULT_PLACEHOLDER_SUFFIX;/*** 根据替换规则来替换指定模板中的占位符值** @param content 要解析的字符串* @param rule    解析规则回调*/public String resolveByRule(String content, Function<String, String> rule) {int start = content.indexOf(this.placeholderPrefix);if (start == -1) {return content;}StringBuilder result = new StringBuilder(content);while (start != -1) {int end = result.indexOf(this.placeholderSuffix, start);//获取占位符属性值，如{id}, 即获取idString placeholder = result.substring(start + this.placeholderPrefix.length(), end);//替换整个占位符内容，即将{id}值替换为替换规则回调中的内容String replaceContent = placeholder.trim().isEmpty() ? "" : rule.apply(placeholder);result.replace(start, end + this.placeholderSuffix.length(), replaceContent);start = result.indexOf(this.placeholderPrefix, start + replaceContent.length());}return result.toString();}
}

自定义拦截器

@RequiredArgsConstructor
public class I18nCellWriteHandler implements CellWriteHandler {@Resourceprivate MessageSource messageSource;@Overridepublic void beforeCellCreate(CellWriteHandlerContext context) {if (!context.getHead()) {return;}final List<String> originHeadNames = context.getHeadData().getHeadNameList();if (CollectionUtils.isEmpty(originHeadNames)) {return;}List<String> newHeadNames = originHeadNames.stream().map(headName -> PlaceholderResolver.getDefaultResolver().resolveByRule(headName, this::getMessage)).collect(Collectors.toList());context.getHeadData().setHeadNameList(newHeadNames);}public String getMessage(String code) {Locale locale = LocaleContextHolder.getLocale();return messageSource.getMessage(code, null, locale);}
}