Spring Boot实现大文件分块上传

2024-09-05 23:28

本文主要是介绍Spring Boot实现大文件分块上传,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!

1.分块上传使用场景

  • 大文件加速上传:当文件大小超过100MB时,使用分片上传可实现并行上传多个Part以加快上传速度。

  • 网络环境较差:网络环境较差时,建议使用分片上传。当出现上传失败的时候,您仅需重传失败的Part。

  • 文件大小不确定: 可以在需要上传的文件大小还不确定的情况下开始上传,这种场景在视频监控等行业应用中比较常见。

2.实现原理

实现原理其实很简单,核心就是客户端把大文件按照一定规则进行拆分,比如20MB为一个小块,分解成一个一个的文件块,然后把这些文件块单独上传到服务端,等到所有的文件块都上传完毕之后,客户端再通知服务端进行文件合并的操作,合并完成之后整个任务结束。

3.代码工程

 实验目的

实现大文件分块上传

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>springboot-demo</artifactId><groupId>com.et</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>file</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-autoconfigure</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpmime</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>cn.hutool</groupId><artifactId>hutool-core</artifactId><version>5.8.15</version></dependency></dependencies>
</project>

controller

package com.et.controller;import com.et.bean.Chunk;
import com.et.bean.FileInfo;
import com.et.service.ChunkService;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.Resource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;import java.util.List;@RestController
@RequestMapping("file")
public class ChunkController {@Autowiredprivate ChunkService chunkService;/*** upload by part** @param chunk* @return*/@PostMapping(value = "chunk")public ResponseEntity<String> chunk(Chunk chunk) {chunkService.chunk(chunk);return ResponseEntity.ok("File Chunk Upload Success");}/*** merge** @param filename* @return*/@GetMapping(value = "merge")public ResponseEntity<Void> merge(@RequestParam("filename") String filename) {chunkService.merge(filename);return ResponseEntity.ok().build();}/*** get fileName** @return files*/@GetMapping("/files")public ResponseEntity<List<FileInfo>> list() {return ResponseEntity.ok(chunkService.list());}/*** get single file** @param filename* @return file*/@GetMapping("/files/{filename:.+}")public ResponseEntity<Resource> getFile(@PathVariable("filename") String filename) {return ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION,"attachment; filename=\"" + filename + "\"").body(chunkService.getFile(filename));}
}

config

package com.et.config;import com.et.service.FileClient;
import com.et.service.impl.LocalFileSystemClient;import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.HashMap;
import java.util.Map;
import java.util.function.Supplier;@Configuration
public class FileClientConfig {@Value("${file.client.type:local-file}")private String fileClientType;private static final Map<String, Supplier<FileClient>> FILE_CLIENT_SUPPLY = new HashMap<String, Supplier<FileClient>>() {{put("local-file", LocalFileSystemClient::new);// put("aws-s3", AWSFileClient::new);}};/*** get client** @return */@Beanpublic FileClient fileClient() {return FILE_CLIENT_SUPPLY.get(fileClientType).get();}
}

service

package com.et.service;import com.et.bean.Chunk;
import com.et.bean.FileInfo;import org.springframework.core.io.Resource;import java.util.List;public interface ChunkService {void chunk(Chunk chunk);void merge(String filename);List<FileInfo> list();Resource getFile(String filename);
}
package com.et.service.impl;import com.et.bean.Chunk;
import com.et.bean.ChunkProcess;
import com.et.bean.FileInfo;
import com.et.service.ChunkService;
import com.et.service.FileClient;import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Service;import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicBoolean;@Service
@Slf4j
public class ChunkServiceImpl implements ChunkService {// processprivate static final Map<String, ChunkProcess> CHUNK_PROCESS_STORAGE = new ConcurrentHashMap<>();// file listprivate static final List<FileInfo> FILE_STORAGE = new CopyOnWriteArrayList<>();@Autowiredprivate FileClient fileClient;@Overridepublic void chunk(Chunk chunk) {String filename = chunk.getFilename();boolean match = FILE_STORAGE.stream().anyMatch(fileInfo -> fileInfo.getFileName().equals(filename));if (match) {throw new RuntimeException("File [ " + filename + " ] already exist");}ChunkProcess chunkProcess;String uploadId;if (CHUNK_PROCESS_STORAGE.containsKey(filename)) {chunkProcess = CHUNK_PROCESS_STORAGE.get(filename);uploadId = chunkProcess.getUploadId();AtomicBoolean isUploaded = new AtomicBoolean(false);Optional.ofNullable(chunkProcess.getChunkList()).ifPresent(chunkPartList ->isUploaded.set(chunkPartList.stream().anyMatch(chunkPart -> chunkPart.getChunkNumber() == chunk.getChunkNumber())));if (isUploaded.get()) {log.info("file【{}】chunk【{}】upload,jump", chunk.getFilename(), chunk.getChunkNumber());return;}} else {uploadId = fileClient.initTask(filename);chunkProcess = new ChunkProcess().setFilename(filename).setUploadId(uploadId);CHUNK_PROCESS_STORAGE.put(filename, chunkProcess);}List<ChunkProcess.ChunkPart> chunkList = chunkProcess.getChunkList();String chunkId = fileClient.chunk(chunk, uploadId);chunkList.add(new ChunkProcess.ChunkPart(chunkId, chunk.getChunkNumber()));CHUNK_PROCESS_STORAGE.put(filename, chunkProcess.setChunkList(chunkList));}@Overridepublic void merge(String filename) {ChunkProcess chunkProcess = CHUNK_PROCESS_STORAGE.get(filename);fileClient.merge(chunkProcess);SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String currentTime = simpleDateFormat.format(new Date());FILE_STORAGE.add(new FileInfo().setUploadTime(currentTime).setFileName(filename));CHUNK_PROCESS_STORAGE.remove(filename);}@Overridepublic List<FileInfo> list() {return FILE_STORAGE;}@Overridepublic Resource getFile(String filename) {return fileClient.getFile(filename);}
}
package com.et.service.impl;import com.et.bean.FileInfo;
import com.et.service.FileUploadService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Service;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.multipart.MultipartFile;import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;@Service
@Slf4j
public class FileUploadServiceImpl implements FileUploadService {@Value("${upload.path:/data/upload/}")private String filePath;private static final List<FileInfo> FILE_STORAGE = new CopyOnWriteArrayList<>();@Overridepublic void upload(MultipartFile[] files) {SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");for (MultipartFile file : files) {String fileName = file.getOriginalFilename();boolean match = FILE_STORAGE.stream().anyMatch(fileInfo -> fileInfo.getFileName().equals(fileName));if (match) {throw new RuntimeException("File [ " + fileName + " ] already exist");}String currentTime = simpleDateFormat.format(new Date());try (InputStream in = file.getInputStream();OutputStream out = Files.newOutputStream(Paths.get(filePath + fileName))) {FileCopyUtils.copy(in, out);} catch (IOException e) {log.error("File [{}] upload failed", fileName, e);throw new RuntimeException(e);}FileInfo fileInfo = new FileInfo().setFileName(fileName).setUploadTime(currentTime);FILE_STORAGE.add(fileInfo);}}@Overridepublic List<FileInfo> list() {return FILE_STORAGE;}@Overridepublic Resource getFile(String fileName) {FILE_STORAGE.stream().filter(info -> info.getFileName().equals(fileName)).findFirst().orElseThrow(() -> new RuntimeException("File [ " + fileName + " ] not exist"));File file = new File(filePath + fileName);return new FileSystemResource(file);}
}

以上只是一些关键代码,所有代码请参见下面代码仓库

代码仓库

  • https://github.com/Harries/springboot-demo(File)

4.测试

  • 启动Sprint Boot应用
  • 编写测试类
package com.et.file;import cn.hutool.core.io.FileUtil;
import org.junit.Test;
import org.springframework.core.io.FileSystemResource;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;import java.io.RandomAccessFile;public class MultipartUploadTest {@Testpublic void testUpload() throws Exception {String chunkFileFolder = "D:/tmp/";java.io.File file = new java.io.File("D:/SoftWare/oss-browser-win32-ia32.zip");long contentLength = file.length();// partSize:20MBlong partSize = 20 * 1024 * 1024;// the last partSize may less  20MBlong chunkFileNum = (long) Math.ceil(contentLength * 1.0 / partSize);RestTemplate restTemplate = new RestTemplate();try (RandomAccessFile raf_read = new RandomAccessFile(file, "r")) {// bufferbyte[] b = new byte[1024];for (int i = 1; i <= chunkFileNum; i++) {// chunkjava.io.File chunkFile = new java.io.File(chunkFileFolder + i);// writetry (RandomAccessFile raf_write = new RandomAccessFile(chunkFile, "rw")) {int len;while ((len = raf_read.read(b)) != -1) {raf_write.write(b, 0, len);if (chunkFile.length() >= partSize) {break;}}// uploadMultiValueMap<String, Object> body = new LinkedMultiValueMap<>();body.add("file", new FileSystemResource(chunkFile));body.add("chunkNumber", i);body.add("chunkSize", partSize);body.add("currentChunkSize", chunkFile.length());body.add("totalSize", contentLength);body.add("filename", file.getName());body.add("totalChunks", chunkFileNum);HttpHeaders headers = new HttpHeaders();headers.setContentType(MediaType.MULTIPART_FORM_DATA);HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);String serverUrl = "http://localhost:8080/file/chunk";ResponseEntity<String> response = restTemplate.postForEntity(serverUrl, requestEntity, String.class);System.out.println("Response code: " + response.getStatusCode() + " Response body: " + response.getBody());} finally {FileUtil.del(chunkFile);}}}// merge fileString mergeUrl = "http://localhost:8080/file/merge?filename=" + file.getName();ResponseEntity<String> response = restTemplate.getForEntity(mergeUrl, String.class);System.out.println("Response code: " + response.getStatusCode() + " Response body: " + response.getBody());}
}
  • 运行测试类,日志如下

upload

5.引用

  • Spring Boot中大文件分片上传—支持本地文件和Amazon S3 - Yuandupier
  • Spring Boot实现大文件分块上传 | Harries Blog™

这篇关于Spring Boot实现大文件分块上传的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!



http://www.chinasem.cn/article/1140354

相关文章

JVM 的类初始化机制

前言 当你在 Java 程序中new对象时,有没有考虑过 JVM 是如何把静态的字节码(byte code)转化为运行时对象的呢,这个问题看似简单,但清楚的同学相信也不会太多,这篇文章首先介绍 JVM 类初始化的机制,然后给出几个易出错的实例来分析,帮助大家更好理解这个知识点。 JVM 将字节码转化为运行时对象分为三个阶段,分别是:loading 、Linking、initialization

Spring Security 基于表达式的权限控制

前言 spring security 3.0已经可以使用spring el表达式来控制授权,允许在表达式中使用复杂的布尔逻辑来控制访问的权限。 常见的表达式 Spring Security可用表达式对象的基类是SecurityExpressionRoot。 表达式描述hasRole([role])用户拥有制定的角色时返回true (Spring security默认会带有ROLE_前缀),去

浅析Spring Security认证过程

类图 为了方便理解Spring Security认证流程,特意画了如下的类图,包含相关的核心认证类 概述 核心验证器 AuthenticationManager 该对象提供了认证方法的入口,接收一个Authentiaton对象作为参数; public interface AuthenticationManager {Authentication authenticate(Authenti

Spring Security--Architecture Overview

1 核心组件 这一节主要介绍一些在Spring Security中常见且核心的Java类,它们之间的依赖,构建起了整个框架。想要理解整个架构,最起码得对这些类眼熟。 1.1 SecurityContextHolder SecurityContextHolder用于存储安全上下文(security context)的信息。当前操作的用户是谁,该用户是否已经被认证,他拥有哪些角色权限…这些都被保

Spring Security基于数据库验证流程详解

Spring Security 校验流程图 相关解释说明(认真看哦) AbstractAuthenticationProcessingFilter 抽象类 /*** 调用 #requiresAuthentication(HttpServletRequest, HttpServletResponse) 决定是否需要进行验证操作。* 如果需要验证,则会调用 #attemptAuthentica

Spring Security 从入门到进阶系列教程

Spring Security 入门系列 《保护 Web 应用的安全》 《Spring-Security-入门(一):登录与退出》 《Spring-Security-入门(二):基于数据库验证》 《Spring-Security-入门(三):密码加密》 《Spring-Security-入门(四):自定义-Filter》 《Spring-Security-入门(五):在 Sprin

Java架构师知识体认识

源码分析 常用设计模式 Proxy代理模式Factory工厂模式Singleton单例模式Delegate委派模式Strategy策略模式Prototype原型模式Template模板模式 Spring5 beans 接口实例化代理Bean操作 Context Ioc容器设计原理及高级特性Aop设计原理Factorybean与Beanfactory Transaction 声明式事物

Java进阶13讲__第12讲_1/2

多线程、线程池 1.  线程概念 1.1  什么是线程 1.2  线程的好处 2.   创建线程的三种方式 注意事项 2.1  继承Thread类 2.1.1 认识  2.1.2  编码实现  package cn.hdc.oop10.Thread;import org.slf4j.Logger;import org.slf4j.LoggerFactory

hdu1043(八数码问题,广搜 + hash(实现状态压缩) )

利用康拓展开将一个排列映射成一个自然数,然后就变成了普通的广搜题。 #include<iostream>#include<algorithm>#include<string>#include<stack>#include<queue>#include<map>#include<stdio.h>#include<stdlib.h>#include<ctype.h>#inclu

JAVA智听未来一站式有声阅读平台听书系统小程序源码

智听未来,一站式有声阅读平台听书系统 🌟&nbsp;开篇:遇见未来,从“智听”开始 在这个快节奏的时代,你是否渴望在忙碌的间隙,找到一片属于自己的宁静角落?是否梦想着能随时随地,沉浸在知识的海洋,或是故事的奇幻世界里?今天,就让我带你一起探索“智听未来”——这一站式有声阅读平台听书系统,它正悄悄改变着我们的阅读方式,让未来触手可及! 📚&nbsp;第一站:海量资源,应有尽有 走进“智听