添加文件服务
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@@ -126,6 +126,10 @@
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<artifactId>commons-lang3</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.tika</groupId>
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<artifactId>tika-core</artifactId> <!-- 文件客户端:文件类型的识别 -->
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</dependency>
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<dependency>
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@@ -0,0 +1,75 @@
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package com.tashow.cloud.common.util.io;
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import cn.hutool.core.io.IoUtil;
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import cn.hutool.core.util.StrUtil;
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import com.alibaba.ttl.TransmittableThreadLocal;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.SneakyThrows;
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import org.apache.tika.Tika;
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import java.io.IOException;
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import java.net.URLEncoder;
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/**
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* 文件类型 Utils
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*
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* @author 芋道源码
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*/
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public class FileTypeUtils {
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private static final ThreadLocal<Tika> TIKA = TransmittableThreadLocal.withInitial(Tika::new);
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/**
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* 获得文件的 mineType,对于doc,jar等文件会有误差
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*
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* @param data 文件内容
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* @return mineType 无法识别时会返回“application/octet-stream”
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*/
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@SneakyThrows
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public static String getMineType(byte[] data) {
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return TIKA.get().detect(data);
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}
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/**
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* 已知文件名,获取文件类型,在某些情况下比通过字节数组准确,例如使用jar文件时,通过名字更为准确
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*
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* @param name 文件名
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* @return mineType 无法识别时会返回“application/octet-stream”
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*/
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public static String getMineType(String name) {
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return TIKA.get().detect(name);
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}
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/**
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* 在拥有文件和数据的情况下,最好使用此方法,最为准确
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*
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* @param data 文件内容
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* @param name 文件名
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* @return mineType 无法识别时会返回“application/octet-stream”
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*/
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public static String getMineType(byte[] data, String name) {
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return TIKA.get().detect(data, name);
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}
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/**
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* 返回附件
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*
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* @param response 响应
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* @param filename 文件名
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* @param content 附件内容
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*/
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public static void writeAttachment(HttpServletResponse response, String filename, byte[] content) throws IOException {
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// 设置 header 和 contentType
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response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "UTF-8"));
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String contentType = getMineType(content, filename);
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response.setContentType(contentType);
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// 针对 video 的特殊处理,解决视频地址在移动端播放的兼容性问题
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if (StrUtil.containsIgnoreCase(contentType, "video")||StrUtil.containsIgnoreCase(contentType, "audio")) {
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response.setHeader("Content-Length", String.valueOf(content.length - 1));
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response.setHeader("Content-Range", String.valueOf(content.length - 1));
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response.setHeader("Accept-Ranges", "bytes");
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}
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// 输出附件
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IoUtil.write(response.getOutputStream(), false, content);
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}
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}
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