Transformer入门核心:并行计算本质与工业落地陷阱
2026/6/22 4:56:06
作为山东某上市集团公司的项目负责人,针对集团大文件传输系统建设需求,我制定了以下专业解决方案:
┌─────────────────────────────────────┐ │ 客户端层 │ │ (支持IE8+/Chrome/Firefox/国产浏览器)│ └────────────────┬───────────────────┘ │ ┌────────────────▼───────────────────┐ │ 服务层 │ │ ┌─────────────┐ ┌───────────────┐ │ │ │ 文件上传服务 │ │ 文件下载服务 │ │ │ └─────────────┘ └───────────────┘ │ │ ┌─────────────┐ ┌───────────────┐ │ │ │ 加密解密服务 │ │ 存储管理服务 │ │ │ └─────────────┘ └───────────────┘ │ └────────────────┬───────────────────┘ │ ┌────────────────▼───────────────────┐ │ 存储层 │ │ ┌─────────────┐ ┌───────────────┐ │ │ │ 华为云OBS │ │ 本地存储 │ │ │ └─────────────┘ └───────────────┘ │ └─────────────────────────────────────┘// FileUploader.vueimportCryptoJSfrom'crypto-js'import{SM4}from'gm-crypto'exportdefault{data(){return{fileList:[],uploader:null}},methods:{// 处理文件选择handleFileChange(e){constfiles=e.target.filesthis.traverseFiles(files)},// 递归处理文件夹结构traverseFiles(files,path=''){Array.from(files).forEach(file=>{if(file.webkitRelativePath){constrelativePath=file.webkitRelativePaththis.fileList.push({id:CryptoJS.MD5(relativePath).toString(),name:relativePath,file:file,progress:0,status:'waiting'})}})},// 开始上传asyncstartUpload(){for(constitemofthis.fileList){awaitthis.uploadFile(item)}},// 文件上传方法asyncuploadFile(fileItem){returnnewPromise((resolve,reject)=>{constchunkSize=10*1024*1024// 10MB分片constfile=fileItem.fileconstchunks=Math.ceil(file.size/chunkSize)constfileReader=newFileReader()letcurrentChunk=0// 读取分片fileReader.onload=async(e)=>{constchunkData=e.target.result// 使用SM4加密分片数据constencryptedData=SM4.encrypt(chunkData,this.encryptionKey,{mode:SM4.constants.CBC,iv:this.iv})// 上传分片try{awaitthis.$http.post('/api/upload/chunk',{fileId:fileItem.id,chunkIndex:currentChunk,totalChunks:chunks,data:encryptedData,relativePath:fileItem.name},{onUploadProgress:(progressEvent)=>{constpercent=Math.round((progressEvent.loaded/progressEvent.total)*100)fileItem.progress=Math.min(99,Math.round((currentChunk/chunks)*100+(percent/chunks)))}})currentChunk++if(currentChunk<chunks){this.readNextChunk(file,currentChunk,chunkSize,fileReader)}else{// 所有分片上传完成awaitthis.$http.post('/api/upload/merge',{fileId:fileItem.id,fileName:file.name,totalChunks:chunks,relativePath:fileItem.name})fileItem.progress=100fileItem.status='done'resolve()}}catch(err){reject(err)}}this.readNextChunk(file,currentChunk,chunkSize,fileReader)})},readNextChunk(file,chunk,chunkSize,fileReader){conststart=chunk*chunkSizeconstend=Math.min(file.size,start+chunkSize)constslice=file.slice(start,end)fileReader.readAsArrayBuffer(slice)}}}@RestController@RequestMapping("/api/upload")publicclassFileUploadController{@AutowiredprivateFileStorageServicestorageService;@AutowiredprivateCryptoServicecryptoService;@PostMapping("/chunk")publicResponseEntityuploadChunk(@RequestParamStringfileId,@RequestParamintchunkIndex,@RequestParaminttotalChunks,@RequestParamStringrelativePath,@RequestBodybyte[]encryptedData,HttpServletRequestrequest){try{// 解密数据byte[]decryptedData=cryptoService.decryptSM4(encryptedData);// 存储分片storageService.storeChunk(fileId,chunkIndex,decryptedData,relativePath);// 保存上传进度到数据库uploadProgressService.saveProgress(fileId,request.getSession().getId(),chunkIndex,totalChunks,relativePath);returnResponseEntity.ok().build();}catch(Exceptione){returnResponseEntity.status(500).body("上传失败: "+e.getMessage());}}@PostMapping("/merge")publicResponseEntitymergeChunks(@RequestParamStringfileId,@RequestParamStringfileName,@RequestParaminttotalChunks,@RequestParamStringrelativePath){try{FileInfofileInfo=storageService.mergeChunks(fileId,fileName,totalChunks,relativePath);returnResponseEntity.ok(fileInfo);}catch(Exceptione){returnResponseEntity.status(500).body("合并失败: "+e.getMessage());}}}@ServicepublicclassFileStorageServiceImplimplementsFileStorageService{@Value("${storage.type}")privateStringstorageType;@AutowiredprivateHuaweiObsServicehuaweiObsService;@AutowiredprivateLocalStorageServicelocalStorageService;@OverridepublicvoidstoreChunk(StringfileId,intchunkIndex,byte[]data,StringrelativePath){if("huawei-obs".equals(storageType)){huaweiObsService.storeChunk(fileId,chunkIndex,data,relativePath);}else{localStorageService.storeChunk(fileId,chunkIndex,data,relativePath);}}@OverridepublicFileInfomergeChunks(StringfileId,StringfileName,inttotalChunks,StringrelativePath){if("huawei-obs".equals(storageType)){returnhuaweiObsService.mergeChunks(fileId,fileName,totalChunks,relativePath);}else{returnlocalStorageService.mergeChunks(fileId,fileName,totalChunks,relativePath);}}}@ServicepublicclassCryptoServiceImplimplementsCryptoService{@Value("${crypto.type:sm4}")privateStringcryptoType;@Value("${crypto.sm4.key}")privateStringsm4Key;@Value("${crypto.sm4.iv}")privateStringsm4Iv;@Overridepublicbyte[]encryptSM4(byte[]data){// SM4加密实现SM4Engineengine=newSM4Engine();engine.init(true,newKeyParameter(sm4Key.getBytes()));byte[]ivBytes=sm4Iv.getBytes(StandardCharsets.UTF_8);BufferedBlockCiphercipher=newPaddedBufferedBlockCipher(newCBCBlockCipher(engine),newPKCS7Padding());cipher.init(true,newParametersWithIV(newKeyParameter(sm4Key.getBytes()),ivBytes));byte[]output=newbyte[cipher.getOutputSize(data.length)];intlen=cipher.processBytes(data,0,data.length,output,0);try{len+=cipher.doFinal(output,len);}catch(Exceptione){thrownewRuntimeException("SM4加密失败",e);}returnArrays.copyOf(output,len);}@Overridepublicbyte[]decryptSM4(byte[]encryptedData){// SM4解密实现SM4Engineengine=newSM4Engine();engine.init(false,newKeyParameter(sm4Key.getBytes()));byte[]ivBytes=sm4Iv.getBytes(StandardCharsets.UTF_8);BufferedBlockCiphercipher=newPaddedBufferedBlockCipher(newCBCBlockCipher(engine),newPKCS7Padding());cipher.init(false,newParametersWithIV(newKeyParameter(sm4Key.getBytes()),ivBytes));byte[]output=newbyte[cipher.getOutputSize(encryptedData.length)];intlen=cipher.processBytes(encryptedData,0,encryptedData.length,output,0);try{len+=cipher.doFinal(output,len);}catch(Exceptione){thrownewRuntimeException("SM4解密失败",e);}returnArrays.copyOf(output,len);}}IE8兼容方案:
国产浏览器适配:
前端路径记录:
webkitRelativePath属性获取完整路径后端存储设计:
CREATETABLEfile_structure(idVARCHAR(64)PRIMARYKEY,file_nameVARCHAR(255),full_pathTEXT,parent_idVARCHAR(64),is_directoryBOOLEAN,storage_pathTEXT);进度存储设计:
@Entity@Table(name="upload_progress")publicclassUploadProgress{@IdprivateStringid;// fileId + sessionId 组合主键privateStringfileId;privateStringsessionId;privateStringfileName;privateStringrelativePath;privateLongfileSize;privateIntegeruploadedChunks;privateIntegertotalChunks;privateDatelastUpdateTime;}恢复机制:
操作系统适配:
数据库支持:
# application.yml 数据库多源配置示例datasource:primary:type:com.zaxxer.hikari.HikariDataSourcedriver-class-name:com.mysql.jdbc.Driverjdbc-url:jdbc:mysql://localhost:3306/main_dbusername:rootpassword:123456dameng:type:com.zaxxer.hikari.HikariDataSourcedriver-class-name:dm.jdbc.driver.DmDriverjdbc-url:jdbc:dm://localhost:5236/backup_dbusername:sysdbapassword:dameng123SM4优化实现:
混合加密方案:
// 混合加密策略publicbyte[]encrypt(byte[]data){if(cryptoType.equals("sm4")){returnencryptSM4(data);}else{returnencryptAES(data);}}授权范围:
交付物清单:
| 阶段 | 时间 | 交付物 |
|---|---|---|
| 需求确认 | 第1周 | 需求规格说明书 |
| 系统设计 | 第2-3周 | 系统设计文档 |
| 核心功能开发 | 第4-8周 | 核心模块源代码 |
| 信创适配 | 第9-10周 | 适配测试报告 |
| 系统测试 | 第11周 | 测试报告 |
| 培训交付 | 第12周 | 培训材料、系统文档 |
技术培训:
认证培训:
本方案完全满足贵司对大文件传输系统的所有技术要求,特别是针对政府、央企客户的安全性和稳定性要求,提供了完整的解决方案。我们愿意提供源代码级的产品授权,并确保后续技术支持和更新服务。
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