修复下载找不到路径问题

src/main/java/com/sztzjy/financial_bigdata/controller/stu/JupyterController.java

@@ -264,12 +264,12 @@ public class JupyterController {
     @AnonymousAccess
     @ApiOperation("python下载生成文件")
     @GetMapping("downloadFileByPython")
-    public void downloadFileByPython(@RequestParam String caseName, @RequestParam String name, HttpServletResponse response) {
+    public void downloadFileByPython(@RequestParam String name, HttpServletResponse response) {
 
         //存在就下载
         String path = "/usr/local/tianzeProject/financial_bigdata_total/py/data/";
 
-        iFileUtil.download(response, caseName, path+name);
+        iFileUtil.downloadByOtherFile(response, name, path+name);
     }
 
 

src/main/java/com/sztzjy/financial_bigdata/util/file/IFileUtil.java

@@ -84,4 +84,8 @@ public interface IFileUtil {
      */
     String getDiskRelativePath(String fileName, String suffix);
 
+
+    void downloadByOtherFile(HttpServletResponse response,String name,String filePath);
+
+
 }

src/main/java/com/sztzjy/financial_bigdata/util/file/LocalFileUtil.java

@@ -173,4 +173,38 @@ public class LocalFileUtil implements IFileUtil{
             throw new IllegalArgumentException("上传文件失败,IO错误");
         }
     }
+
+
+    @Override
+    public void downloadByOtherFile(HttpServletResponse response, String name,String relativePath) {
+        Assert.hasText(relativePath, "路径为空");
+        System.out.println("------------------------------------" + relativePath);
+        File file = new File(relativePath);
+        Assert.isTrue(file.exists(), "附件不存在");
+        String sp = relativePath.substring(relativePath.lastIndexOf(".") + 1);
+
+        String substring = name.substring(0, name.lastIndexOf("."));
+
+
+        InputStream fis = null;
+        try {
+            response.setContentType("application/octet-stream");
+            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode((substring + "." + sp), CharsetUtil.UTF_8));
+            fis = new BufferedInputStream(Files.newInputStream(file.toPath()));
+            response.addHeader("Content-Length", String.valueOf(fis.available()));
+            byte[] buff = new byte[4096];
+            int len;
+            while ((len = fis.read(buff)) != -1) {
+                response.getOutputStream().write(buff, 0, len);
+            }
+        } catch (Exception e) {
+            throw new IllegalArgumentException("下载文件失败: " + e.getMessage());
+        } finally {
+            try {
+                if (fis != null) fis.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
 }