!196 修复不同浏览器附件下载中文名乱码的问题

Merge pull request !196 from zhengxiaolong/master

ruoyi-admin/src/main/java/com/ruoyi/web/controller/common/CommonController.java

@@ -5,6 +5,7 @@ import javax.servlet.http.HttpServletResponse;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.MediaType;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -18,6 +19,10 @@ import com.ruoyi.common.utils.StringUtils;
 import com.ruoyi.common.utils.file.FileUploadUtils;
 import com.ruoyi.common.utils.file.FileUtils;
 
+import java.io.File;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
 /**
  * 通用请求处理
  * 
@@ -49,10 +54,9 @@ public class CommonController
             String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
             String filePath = Global.getDownloadPath() + fileName;
 
-            response.setCharacterEncoding("utf-8");
-            response.setContentType("multipart/form-data");
-            response.setHeader("Content-Disposition",
-                    "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, realFileName));
+            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
+            FileUtils.setAttachmentResponseHeader(response,realFileName);
+
             FileUtils.writeBytes(filePath, response.getOutputStream());
             if (delete)
             {
@@ -103,10 +107,10 @@ public class CommonController
         String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
         // 下载名称
         String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
-        response.setCharacterEncoding("utf-8");
-        response.setContentType("multipart/form-data");
-        response.setHeader("Content-Disposition",
-                "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, downloadName));
+
+        response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
+        FileUtils.setAttachmentResponseHeader(response,downloadName);
+
         FileUtils.writeBytes(downloadPath, response.getOutputStream());
     }
 }

ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileUtils.java

@@ -7,7 +7,9 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 /**
  * 文件处理工具类
@@ -139,4 +141,37 @@ public class FileUtils extends org.apache.commons.io.FileUtils
         }
         return filename;
     }
+
+    /**
+     * 下载文件名重新编码
+     *
+     * @param response 响应对象
+     * @param realFileName 真实文件名
+     * @return
+     */
+    public static void setAttachmentResponseHeader(HttpServletResponse response,String realFileName) throws UnsupportedEncodingException {
+        String percentEncodedFileName = percentEncode(realFileName);
+
+        StringBuilder contentDispositionValue = new StringBuilder();
+        contentDispositionValue.append("attachment; filename=")
+                .append(percentEncodedFileName)
+                .append(";")
+                .append("filename*=")
+                .append("utf-8''")
+                .append(percentEncodedFileName);
+
+        response.setHeader("Content-disposition",
+                contentDispositionValue.toString());
+    }
+
+    /**
+     * 百分号编码工具方法
+     *
+     * @param s 需要百分号编码的字符串
+     * @return 百分号编码后的字符串
+     */
+    public static String percentEncode(String s) throws UnsupportedEncodingException {
+        String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
+        return encode .replaceAll("\\+", "%20");
+    }
 }