diff --git a/src/main/java/com/gunshi/project/xyt/controller/OsmoticWaterRController.java b/src/main/java/com/gunshi/project/xyt/controller/OsmoticWaterRController.java
index bb9128c..58f09cf 100644
--- a/src/main/java/com/gunshi/project/xyt/controller/OsmoticWaterRController.java
+++ b/src/main/java/com/gunshi/project/xyt/controller/OsmoticWaterRController.java
@@ -1,6 +1,5 @@
 package com.gunshi.project.xyt.controller;
 
-import cn.hutool.core.io.resource.ClassPathResource;
 import com.alibaba.fastjson2.JSON;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
@@ -38,21 +37,17 @@ import org.springframework.web.bind.annotation.RequestPart;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
-import java.io.BufferedInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.Serializable;
-import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Objects;
-import java.util.stream.Collectors;
 
 /**
  * 描述: 水质采样记录表
@@ -195,16 +190,16 @@ public class OsmoticWaterRController {
     @PostMapping("/downloadFile")
     @CrossOrigin
     public void downloadFile(HttpServletResponse response) throws IOException {
-        ClassPathResource classPathResource = new ClassPathResource("/doc/2002年6月1日_GB3838-2002地表水环境质量标准.pdf");
-        File file = classPathResource.getFile();
+        String filePath = "doc/2002年6月1日_GB3838-2002地表水环境质量标准.pdf";
+        File file = new File(filePath);
         if (!file.exists()) {
-            new IllegalArgumentException("文件不存在！");
+            new FileNotFoundException("文件不存在！");
         }
-        response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode(file.getName(), "UTF-8"));
-        BufferedInputStream inputStream = null;
+        response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode(filePath, "UTF-8"));
+        InputStream inputStream = null;
         OutputStream outputStream = null;
         try {
-            inputStream = new BufferedInputStream(new FileInputStream(file));
+            inputStream = this.getClass().getClassLoader().getResourceAsStream(filePath);
             outputStream = response.getOutputStream();
             byte[] buffer = new byte[1024];
             int len = 0;