From bf7a9ef439e3b49268974d564107999619b2b4fd Mon Sep 17 00:00:00 2001
From: rain <167982779@qq.com>
Date: Sat, 20 Jul 2024 09:28:40 +0800
Subject: [PATCH] 优化图片压缩下载使用多线程
---
src/main/java/com/dji/sample/media/service/impl/FileServiceImpl.java | 92 +++++++++++++++++++++++++++++++++------------
1 files changed, 67 insertions(+), 25 deletions(-)
diff --git a/src/main/java/com/dji/sample/media/service/impl/FileServiceImpl.java b/src/main/java/com/dji/sample/media/service/impl/FileServiceImpl.java
index 6b52db1..3b944e5 100644
--- a/src/main/java/com/dji/sample/media/service/impl/FileServiceImpl.java
+++ b/src/main/java/com/dji/sample/media/service/impl/FileServiceImpl.java
@@ -43,6 +43,7 @@
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
+import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.io.File;
import java.io.FileInputStream;
@@ -54,6 +55,8 @@
import java.util.*;
import java.util.List;
import java.util.stream.Collectors;
+
+import static com.dji.sample.media.util.ImageDownloaderAndCompressor.*;
/**
* @author sean
@@ -429,6 +432,27 @@
}
@Override
+ public void downloadImages(String jobId, HttpServletResponse response) {
+ String address = pojo.getEndpoint() + "/" + pojo.getBucket();
+ List<MediaFileEntity> entities = getMedia(jobId);
+ List<String> urls = entities.stream()
+ .map(MediaFileEntity::getObjectKey)
+ .map(objectKey -> address + objectKey)
+ .collect(Collectors.toList());
+ String outputFolder = "images"; // 存放图片的文件夹
+ new File(outputFolder).mkdirs(); // 创建文件夹
+ try {
+ downloadAndSaveImages(urls, outputFolder);
+ zipAndSendFolder(outputFolder, response);
+ } catch (Exception e) {
+ e.printStackTrace();
+ response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ } finally {
+ cleanUp(outputFolder);
+ }
+ }
+
+ @Override
public List<MediaFileDTO> getFilesByWorkspaceAndJobId(String workspaceId, String jobId) {
return mapper.selectList(new LambdaQueryWrapper<MediaFileEntity>()
.eq(MediaFileEntity::getWorkspaceId, workspaceId)
@@ -791,43 +815,58 @@
}
@Override
public PaginationData<MediaFileEntity> getJobId(int pageNum, int pageSize, String workspaceId) {
- // 分页查询
- Page<MediaFileEntity> page = new Page<>(pageNum, pageSize);
- Page<MediaFileEntity> resultPage = mapper.selectPage(page, new LambdaQueryWrapper<MediaFileEntity>()
- .eq(MediaFileEntity::getWorkspaceId, workspaceId));
+ List<MediaFileEntity> allRecords = new ArrayList<>();
+ int currentPageNum = 1; // 从第一页开始获取记录
- List<MediaFileEntity> result = resultPage.getRecords();
+ // 用于存储去重后的记录
+ Map<String, MediaFileEntity> uniqueFilesMap = new HashMap<>();
- // 根据 fileName 字段进行去重并设置 JobName
- Map<String, MediaFileEntity> uniqueFilesMap = result.stream()
- .peek(mediaFile -> {
- String taskNameResult = waylineJobService.getName(mediaFile.getJobId());
- mediaFile.setJobName(taskNameResult);
- })
- .collect(Collectors.toMap(
- MediaFileEntity::getFileName,
- entity -> entity,
- (existing, replacement) -> existing // 如果有重复的，保留已有的
- ));
+ while (true) {
+ // 分页查询
+ Page<MediaFileEntity> page = new Page<>(currentPageNum, pageSize);
+ Page<MediaFileEntity> resultPage = mapper.selectPage(page, new LambdaQueryWrapper<MediaFileEntity>()
+ .eq(MediaFileEntity::getWorkspaceId, workspaceId));
+ List<MediaFileEntity> result = resultPage.getRecords();
+
+ // 检查是否还有更多记录
+ if (result.isEmpty()) {
+ break; // 没有更多记录了，停止请求
+ }
+
+ // 根据 fileName 字段进行去重并设置 JobName
+ result.stream()
+ .peek(mediaFile -> {
+ String taskNameResult = waylineJobService.getName(mediaFile.getJobId());
+ mediaFile.setJobName(taskNameResult);
+ })
+ .forEach(mediaFile -> uniqueFilesMap.putIfAbsent(mediaFile.getFileName(), mediaFile));
+
+ // 增加当前页数以获取更多记录
+ currentPageNum++;
+ }
+
+ // 获取去重后的实际总数
List<MediaFileEntity> uniqueFiles = new ArrayList<>(uniqueFilesMap.values());
-
- // 使用去重后的列表重新计算总数
int uniqueTotal = uniqueFiles.size();
+
+ // 计算当前页的起始和结束索引
+ int fromIndex = Math.min((pageNum - 1) * pageSize, uniqueTotal);
+ int toIndex = Math.min(fromIndex + pageSize, uniqueTotal);
+
+ // 获取当前页的数据
+ List<MediaFileEntity> pagedUniqueFiles = uniqueFiles.subList(fromIndex, toIndex);
// 创建新的分页对象，使用去重后的总数
Page<MediaFileEntity> uniquePage = new Page<>(pageNum, pageSize, uniqueTotal);
-
- // 截取当前页的数据
- int fromIndex = Math.min((pageNum - 1) * pageSize, uniqueTotal);
- int toIndex = Math.min(fromIndex + pageSize, uniqueTotal);
- List<MediaFileEntity> pagedUniqueFiles = uniqueFiles.subList(fromIndex, toIndex);
// 使用新的分页对象构造 Pagination
Pagination pagination = new Pagination(uniquePage);
return new PaginationData<>(pagedUniqueFiles, pagination);
}
+
+
@Override
@@ -870,9 +909,12 @@
- public List<MediaFileEntity> getMedia(String jobId){
- return mapper.selectList(new LambdaQueryWrapper<MediaFileEntity>().eq(MediaFileEntity::getJobId,jobId));
+ public List<MediaFileEntity> getMedia(String jobId) {
+ return mapper.selectList(new LambdaQueryWrapper<MediaFileEntity>()
+ .eq(MediaFileEntity::getJobId, jobId)
+ .groupBy(MediaFileEntity::getFileName)); // 使用groupBy去重
}
+
public void updateById(Integer id, MediaFileMarkEntity entity) {
entity.setIsadd(1);
UpdateWrapper<MediaFileMarkEntity> updateWrapper = new UpdateWrapper<>();
--
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