From 35fac6cc0cd8a1fb944d7696d6f51c0f64df9a35 Mon Sep 17 00:00:00 2001
From: 疯狂的狮子li <15040126243@163.com>
Date: 星期二, 08 十一月 2022 18:47:19 +0800
Subject: [PATCH] update 优化 oss 上传下载 使用流直接操作 减少读取字节码的内存消耗

---
 ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysOssServiceImpl.java |   26 +++++++++++---------------
 1 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysOssServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysOssServiceImpl.java
index f3bb136..4b1d254 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysOssServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysOssServiceImpl.java
@@ -1,9 +1,7 @@
 package com.ruoyi.system.service.impl;
 
-import cn.hutool.core.convert.Convert;
+import cn.hutool.core.io.IoUtil;
 import cn.hutool.core.util.ObjectUtil;
-import cn.hutool.http.HttpException;
-import cn.hutool.http.HttpUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
@@ -32,6 +30,7 @@
 
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
@@ -92,23 +91,20 @@
 
     @Override
     public void download(Long ossId, HttpServletResponse response) throws IOException {
-        SysOssVo sysOss = this.matchingUrl(SpringUtils.getAopProxy(this).getById(ossId));
+        SysOssVo sysOss = this.getById(ossId);
         if (ObjectUtil.isNull(sysOss)) {
             throw new ServiceException("鏂囦欢鏁版嵁涓嶅瓨鍦�!");
         }
         FileUtils.setAttachmentResponseHeader(response, sysOss.getOriginalName());
         response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE + "; charset=UTF-8");
-        long data;
-        try {
-            data = HttpUtil.download(sysOss.getUrl(), response.getOutputStream(), false);
-        } catch (HttpException e) {
-            if (e.getMessage().contains("403")) {
-                throw new ServiceException("鏃犺鍙栨潈闄�, 璇峰湪瀵瑰簲鐨凮SS寮�鍚�'鍏湁璇�'鏉冮檺!");
-            } else {
-                throw new ServiceException(e.getMessage());
-            }
+        OssClient storage = OssFactory.instance();
+        try(InputStream inputStream = storage.getObjectContent(sysOss.getUrl())) {
+            int available = inputStream.available();
+            IoUtil.copy(inputStream, response.getOutputStream(), available);
+            response.setContentLength(available);
+        } catch (Exception e) {
+            throw new ServiceException(e.getMessage());
         }
-        response.setContentLength(Convert.toInt(data));
     }
 
     @Override
@@ -118,7 +114,7 @@
         OssClient storage = OssFactory.instance();
         UploadResult uploadResult;
         try {
-            uploadResult = storage.uploadSuffix(file.getBytes(), suffix, file.getContentType());
+            uploadResult = storage.uploadSuffix(file.getInputStream(), suffix, file.getContentType());
         } catch (IOException e) {
             throw new ServiceException(e.getMessage());
         }

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