package org.ruoyi.common.core.utils.file;
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import cn.hutool.core.io.FileUtil;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.AccessLevel;
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import lombok.NoArgsConstructor;
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import java.net.URLEncoder;
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import java.nio.charset.StandardCharsets;
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/**
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* 文件处理工具类
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*
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* @author Lion Li
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*/
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public class FileUtils extends FileUtil {
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/**
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* 下载文件名重新编码
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*
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* @param response 响应对象
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* @param realFileName 真实文件名
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*/
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public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) {
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String percentEncodedFileName = percentEncode(realFileName);
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String contentDispositionValue = "attachment; filename=%s;filename*=utf-8''%s".formatted(percentEncodedFileName, percentEncodedFileName);
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response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename");
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response.setHeader("Content-disposition", contentDispositionValue);
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response.setHeader("download-filename", percentEncodedFileName);
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}
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/**
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* 百分号编码工具方法
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*
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* @param s 需要百分号编码的字符串
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* @return 百分号编码后的字符串
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*/
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public static String percentEncode(String s) {
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String encode = URLEncoder.encode(s, StandardCharsets.UTF_8);
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return encode.replaceAll("\\+", "%20");
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}
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}
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