Shell编程基础与进程管理
2026/6/27 3:19:03
作为广东某软件有限公司的项目负责人,针对贵司提出的政府级大文件传输系统需求,我司提供以下专业解决方案。
[客户端] → [负载均衡] → [Web服务器集群] → [应用服务器集群] → [分布式文件存储] ↑ ↑ ↑ [加密传输] [断点续传管理] [权限认证]// FileUploader.vueexportdefault{data(){return{files:[],progress:0,uploadId:'',chunkSize:10*1024*1024,// 10MB分片concurrentLimit:3}},methods:{handleFileSelect(e){this.files=Array.from(e.target.files)this.prepareUpload()},asyncprepareUpload(){constres=awaitthis.$http.post('/api/upload/prepare',{files:this.files.map(f=>({name:f.name,size:f.size,relativePath:f.webkitRelativePath||''}))})this.uploadId=res.data.uploadId},asyncstartUpload(){for(constfileofthis.files){awaitthis.uploadFile(file)}},asyncuploadFile(file){consttotalChunks=Math.ceil(file.size/this.chunkSize)constchunks=Array(totalChunks).fill().map((_,i)=>({index:i,start:i*this.chunkSize,end:Math.min((i+1)*this.chunkSize,file.size)}))// 断点续传检查const{data}=awaitthis.$http.get(`/api/upload/progress?uploadId=${this.uploadId}&file=${file.name}`)constuploadedChunks=data.chunks||[]// 并行上传awaitPromise.all(chunks.map((chunk,i)=>{if(!uploadedChunks.includes(i)){returnthis.uploadChunk(file,chunk)}returnPromise.resolve()}))},asyncuploadChunk(file,chunk){constblob=file.slice(chunk.start,chunk.end)constformData=newFormData()formData.append('file',blob)formData.append('uploadId',this.uploadId)formData.append('chunkIndex',chunk.index)formData.append('fileName',file.name)formData.append('relativePath',file.webkitRelativePath||'')awaitthis.$http.post('/api/upload/chunk',formData,{onUploadProgress:(progressEvent)=>{this.progress=Math.round((progressEvent.loaded/progressEvent.total)*100)}})}}}@RestController@RequestMapping("/api/upload")publicclassFileUploadController{@AutowiredprivateFileStorageServicestorageService;@AutowiredprivateCryptoServicecryptoService;@PostMapping("/prepare")publicResponseEntityprepareUpload(@RequestBodyUploadPrepareDTOdto){StringuploadId=UUID.randomUUID().toString();storageService.prepareUpload(uploadId,dto.getFiles());returnResponseEntity.ok(newUploadPrepareVO(uploadId));}@PostMapping(value="/chunk",consumes=MediaType.MULTIPART_FORM_DATA_VALUE)publicResponseEntityuploadChunk(@RequestParam("file")MultipartFilefile,@RequestParam("uploadId")StringuploadId,@RequestParam("chunkIndex")intchunkIndex,@RequestParam("fileName")StringfileName,@RequestParam(value="relativePath",required=false)StringrelativePath){try{// 加密存储byte[]encryptedData=cryptoService.encrypt(file.getBytes(),"SM4");storageService.saveChunk(uploadId,fileName,relativePath,chunkIndex,encryptedData);returnResponseEntity.ok().build();}catch(Exceptione){returnResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();}}@GetMapping("/progress")publicResponseEntitygetUploadProgress(@RequestParam("uploadId")StringuploadId,@RequestParam("file")StringfileName){UploadProgressprogress=storageService.getUploadProgress(uploadId,fileName);returnResponseEntity.ok(progress);}}@ServicepublicclassDistributedFileStorageServiceimplementsFileStorageService{@Value("${storage.type:obs}")privateStringstorageType;@AutowiredprivateHuaweiObsServiceobsService;@AutowiredprivateLocalFileServicelocalFileService;@OverridepublicvoidprepareUpload(StringuploadId,Listfiles){// 根据配置选择存储方式if("obs".equals(storageType)){obsService.prepareUpload(uploadId,files);}else{localFileService.prepareUpload(uploadId,files);}}@OverridepublicvoidsaveChunk(StringuploadId,StringfileName,StringrelativePath,intchunkIndex,byte[]data){if("obs".equals(storageType)){obsService.saveChunk(uploadId,fileName,relativePath,chunkIndex,data);}else{localFileService.saveChunk(uploadId,fileName,relativePath,chunkIndex,data);}}}@ServicepublicclassSM4CryptoServiceimplementsCryptoService{privatestaticfinalStringALGORITHM_NAME="SM4";privatestaticfinalStringDEFAULT_KEY="defaultKey1234567";// 实际应从配置读取@Overridepublicbyte[]encrypt(byte[]data,Stringalgorithm)throwsException{if("SM4".equalsIgnoreCase(algorithm)){returnsm4Encrypt(data);}else{thrownewUnsupportedOperationException("Unsupported algorithm: "+algorithm);}}privatebyte[]sm4Encrypt(byte[]data)throwsException{Ciphercipher=Cipher.getInstance(ALGORITHM_NAME);SecretKeySpeckeySpec=newSecretKeySpec(DEFAULT_KEY.getBytes(),ALGORITHM_NAME);cipher.init(Cipher.ENCRYPT_MODE,keySpec);returncipher.doFinal(data);}@Overridepublicbyte[]decrypt(byte[]encryptedData,Stringalgorithm)throwsException{if("SM4".equalsIgnoreCase(algorithm)){returnsm4Decrypt(encryptedData);}else{thrownewUnsupportedOperationException("Unsupported algorithm: "+algorithm);}}privatebyte[]sm4Decrypt(byte[]encryptedData)throwsException{Ciphercipher=Cipher.getInstance(ALGORITHM_NAME);SecretKeySpeckeySpec=newSecretKeySpec(DEFAULT_KEY.getBytes(),ALGORITHM_NAME);cipher.init(Cipher.DECRYPT_MODE,keySpec);returncipher.doFinal(encryptedData);}}源代码授权:一次性支付160万元,获得永久使用权
服务内容:
我司可提供以下完整材料:
高性能传输:
极致兼容性:
军工级安全:
智能断点续传:
第一阶段(2周):环境适配与集成
第二阶段(1周):开发培训
第三阶段(1周):上线部署
本方案完全满足贵司政府级大文件传输的所有技术要求,特别是在安全性、兼容性和稳定性方面远超现有开源方案。一次性源代码授权模式可大幅降低贵司的长期采购和维护成本,实现技术栈的统一管理。
我司期待与贵司建立长期合作关系,为贵司政府及企业客户提供安全可靠的文件传输解决方案。如需进一步演示或技术交流,请随时联系。
支持离线保存文件进度,在关闭浏览器,刷新浏览器后进行不丢失,仍然能够继续上传
支持上传文件夹并保留层级结构,同样支持进度信息离线保存,刷新页面,关闭页面,重启系统不丢失上传进度。
支持文件批量下载
文件下载支持离线保存进度信息,刷新页面,关闭页面,重启系统均不会丢失进度信息。
支持下载文件夹,并保留层级结构,不打包,不占用服务器资源。
下载完整示例