修改

jeecg-boot-module-system/src/main/java/org/jeecg/modules/iost/API/Util/FileUtil.java

@@ -22,7 +22,7 @@ public class FileUtil {
         try {
             path = new File(ResourceUtils.getURL("classpath:").getPath());
             os = response.getOutputStream();
-            bis = new BufferedInputStream(response.getClass().getClassLoader().getResourceAsStream("res/test.apk"));
+            bis = new BufferedInputStream(response.getClass().getClassLoader().getResourceAsStream("file/test.apk"));
             int i = bis.read(buff);
             while (i != -1) {
                 os.write(buff, 0, buff.length);

jeecg-boot-module-system/src/main/java/org/jeecg/modules/iost/basedata/controller/DownLoadController.java

@@ -61,7 +61,7 @@ public class DownLoadController {
         /*File file = new File("D:\\file\\test.apk");*/
         byte[] body = null;
         /*InputStream in = new FileInputStream(file);*/
-        InputStream in = getClass().getClassLoader().getResourceAsStream("res/cc.apk");
+        InputStream in = getClass().getClassLoader().getResourceAsStream("file/test.apk");
         OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
 //创建存放文件内容的数组
         byte[] buff = new byte[1024];