From f3765cadc9bc0d76bec5c0b6602602518dec2773 Mon Sep 17 00:00:00 2001
From: wanggeng <450292408@qq.com>
Date: Wed, 1 Sep 2021 11:55:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E=E9=9D=99=E6=80=81=E8=B5=84?=
 =?UTF-8?q?=E6=BA=90=E8=AF=B7=E6=B1=82=E5=B7=A5=E5=85=B7=E7=B1=BB=EF=BC=8C?=
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 =?UTF-8?q?=E6=80=81=E8=B5=84=E6=BA=90=E8=AF=BB=E5=8F=96?=
MIME-Version: 1.0
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---
 .../request/StaticResourceRequestUtil.java    | 140 ++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 basic-util/src/main/java/ink/wgink/util/request/StaticResourceRequestUtil.java

diff --git a/basic-util/src/main/java/ink/wgink/util/request/StaticResourceRequestUtil.java b/basic-util/src/main/java/ink/wgink/util/request/StaticResourceRequestUtil.java
new file mode 100644
index 00000000..99c70aea
--- /dev/null
+++ b/basic-util/src/main/java/ink/wgink/util/request/StaticResourceRequestUtil.java
@@ -0,0 +1,140 @@
+package ink.wgink.util.request;
+
+import ink.wgink.exceptions.ParamsException;
+import org.apache.commons.lang3.StringUtils;
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeZone;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.URLEncoder;
+
+/**
+ * @ClassName: StaticResourceRequestUtil
+ * @Description: 静态资源请求
+ * @Author: wanggeng
+ * @Date: 2021/9/1 10:50 上午
+ * @Version: 1.0
+ */
+public class StaticResourceRequestUtil {
+
+    /**
+     * 下载静态资源
+     *
+     * @param response    响应
+     * @param outFile     输出的文件
+     * @param outFileName 输出的名字
+     */
+    public static void download(HttpServletResponse response, File outFile, String outFileName) throws IOException {
+        if (outFile == null) {
+            throw new ParamsException("输出文件不能为空");
+        }
+        if (StringUtils.isBlank(outFileName)) {
+            throw new ParamsException("文件不能名为空");
+        }
+        String[] fileNameArray = outFileName.split("\\.");
+        if (fileNameArray.length < 1) {
+            throw new ParamsException("文件无后缀名");
+        }
+        try (FileInputStream fileInputStream = new FileInputStream(outFile);
+             OutputStream outputStream = response.getOutputStream()) {
+            response.setHeader("Content-Length", String.valueOf(outFile.length()));
+            response.setContentType(getContentType(fileNameArray[fileNameArray.length - 1]));
+            response.setHeader("Content-Disposition", "inline;fileName=" + URLEncoder.encode(outFileName, "UTF-8"));
+            response.setHeader("Expires", DateTime.now().plusDays(7).toDateTime(DateTimeZone.forID("GMT")).toString());
+            // 一小时之内不发送新请求
+            response.setHeader("max-age", "3600");
+            byte[] buf = new byte[1024];
+            for (int readLength; (readLength = fileInputStream.read(buf)) > 0; ) {
+                outputStream.write(buf, 0, readLength);
+            }
+            outputStream.flush();
+        }
+    }
+
+    /**
+     * 文件类型
+     *
+     * @param fileType
+     * @return
+     */
+    public static String getContentType(String fileType) {
+        if (StringUtils.isBlank(fileType)) {
+            throw new ParamsException("文件类型不能为空");
+        }
+        String contentType;
+        switch (fileType) {
+            case "png":
+                contentType = "image/png";
+                break;
+            case "blob":
+            case "jpg":
+            case "jpeg":
+                contentType = "image/jpeg";
+                break;
+            case "gif":
+                contentType = "image/gif";
+                break;
+            case "mp4":
+                contentType = "video/mp4";
+                break;
+            case "rmvb":
+                contentType = "application/vnd.rn-realmedia-vbr";
+                break;
+            case "mp3":
+                contentType = "audio/mp3";
+                break;
+            case "wmv":
+                contentType = "video/x-ms-wmv";
+                break;
+            case "wav":
+                contentType = "audio/wav";
+                break;
+            case "doc":
+                contentType = "application/msword";
+                break;
+            case "docx":
+                contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
+                break;
+            case "xls":
+                contentType = "application/vnd.ms-excel";
+                break;
+            case "xlsx":
+                contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
+                break;
+            case "ppt":
+                contentType = "application/vnd.ms-powerpoint";
+                break;
+            case "pptx":
+                contentType = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
+                break;
+            case "txt":
+                contentType = "text/plain";
+                break;
+            case "apk":
+                contentType = "application/vnd.android.package-archive";
+                break;
+            case "pdf":
+                contentType = "application/pdf";
+                break;
+            case "css":
+                contentType = "text/css";
+                break;
+            case "js":
+                contentType = "application/x-javascript";
+                break;
+            case "htm":
+            case "htx":
+            case "html":
+                contentType = "text/html";
+                break;
+            default:
+                contentType = "application/octet-stream";
+        }
+        return contentType;
+    }
+
+}