Question

我尝试使用pdfjs-dist。得到更大的json响应。

var PDFJS=require('pdfjs-dist');
PDFJS.getDocument({ url: 'p1.pdf', password: '' }).then(function(pdf_doc) 
{
console.log(pdf_doc);
}).catch(function(error) {
// incorrect password

// error is an object having 3 properties : name, message & code
});

回复这是我得到的全部答复。但是我需要在缓冲区中响应。可以将其转换为缓冲区吗？

    PDFDocumentProxy {
    loadingTask:
    { _capability:
     { resolve: [Function], reject: [Function], promise: [Promise] },
 _transport:
  WorkerTransport {
    messageHandler: [Object],
    loadingTask: [Circular],
    commonObjs: [Object],
    fontLoader: [GenericFontLoader],
    _params: [Object],
    CMapReaderFactory: [DOMCMapReaderFactory],
    destroyed: false,
    destroyCapability: null,
    _passwordCapability: null,
    _networkStream: [PDFNodeStream],
    _fullReader: [PDFNodeStreamFsFullReader],
    _lastProgress: [Object],
    pageCache: [],
    pagePromises: [],
    downloadInfoCapability: [Object],
    numPages: 4,
    pdfDocument: [Circular] },
 _worker:
  { name: null,
    destroyed: false,
    postMessageTransfers: true,
    verbosity: 1,
    _readyCapability: [Object],
    _port: [LoopbackPort],
    _webWorker: null,
    _messageHandler: [Object] },
 docId: 'd0',
 destroyed: false,
 onPassword: null,
 onProgress: null,
 onUnsupportedFeature: null },
 _pdfInfo:
 { numPages: 4,
 fingerprint: '3432353738363537336c6e665361446f6f744f4a70' },
_transport:
  WorkerTransport {
 messageHandler:
  { sourceName: 'd0',
    targetName: 'd0_worker',
    comObj: [LoopbackPort],
    callbackId: 1,
    streamId: 1,
    postMessageTransfers: true,
    streamSinks: [Object],
    streamControllers: [Object: null prototype] {},
    callbacksCapabilities: [Object: null prototype] {},
    actionHandler: [Object],
    _onComObjOnMessage: [Function] },
 loadingTask:
  { _capability: [Object],
    _transport: [Circular],
    _worker: [Object],
    docId: 'd0',
    destroyed: false,
    onPassword: null,
    onProgress: null,
    onUnsupportedFeature: null },
 commonObjs: { objs: [Object: null prototype] {} },
 fontLoader:
  GenericFontLoader {
    docId: 'd0',
    nativeFontFaces: [],
    styleElement: null,
    loadingContext: [Object],
    loadTestFontId: 0 },
 _params:
  [Object: null prototype] {
    url: 'p1.pdf',
    password: '',
    rangeChunkSize: 65536,
    CMapReaderFactory: [Function: DOMCMapReaderFactory],
    ignoreErrors: true,
    pdfBug: false,
    nativeImageDecoderSupport: 'none',
    maxImageSize: -1,
    isEvalSupported: true,
    disableFontFace: true,
    disableRange: false,
    disableStream: false,
    disableAutoFetch: false,
    disableCreateObjectURL: false },
 CMapReaderFactory: DOMCMapReaderFactory { baseUrl: null, isCompressed: false },
 destroyed: false,
 destroyCapability: null,
 _passwordCapability: null,
 _networkStream:
  PDFNodeStream {
    source: [Object],
    url: [Url],
    isHttp: false,
    isFsUrl: true,
    httpHeaders: {},
    _fullRequest: [PDFNodeStreamFsFullReader],
    _rangeRequestReaders: [Array] },
 _fullReader:
  PDFNodeStreamFsFullReader {
    _url: [Url],
    _done: false,
    _storedError: null,
    onProgress: [Function],
    _contentLength: 112979,
    _loaded: 112979,
    _filename: null,
    _disableRange: false,
    _rangeChunkSize: 65536,
    _isStreamingSupported: true,
    _isRangeSupported: true,
    _readableStream: [ReadStream],
    _readCapability: [Object],
    _headersCapability: [Object] },
 _lastProgress: { loaded: 112979, total: 112979 },
 pageCache: [],
 pagePromises: [],
 downloadInfoCapability:
  { resolve: [Function], reject: [Function], promise: [Promise] },
 numPages: 4,
 pdfDocument: [Circular] } }
                                                                                                                                                                                        *ignore below text*

efwrg rgsretg resgerstgh; ergh; resjgysregh regjes powrjgu oiuueryoeq uieqroeqreqrilih EHR oiyeroeq ioiyeqroeq oieyqrioeq oieqyr oiyeqr oiyeqrp ioqyet oiehr oiyerh oieyreq oiyheqri iohereqk ioheqr qerioyqereq ioehqriheq rioqehriqeb ioeqrhpeq ioeqrhiqe ioqehriq ioqerhioq oirhqeipor oiqehrieq ioehqrq ioeqhrieq iohqerpq ieqhrpeq ioeqhrpeq iheqrpqe oiehrpqe ieqhrqierh ioeqhr ieqhr ioeqrh piqerh ieqhr he pi i i po po po po po po [[[[[[[

Answer 1

您可以打开并阅读受密码保护的PDF，如下所示。使用现有代码：

var PDFJS = require('pdfjs-dist');
PDFJS.getDocument({ url: 'p1.pdf', password: '' }).then(function(pdf) 
{
  let text = [];
  for(let i = 1; i <= pdf.numPages; i++) {
    pdf.getPage(i).then(function(page) {
      page.getTextContent().then(function(data) {
        for(let j = 0; j < data.items.length; j++) {
          text.push(data.items[j].str);
        }        
      });
    });
  }

}).catch(function(error) {
// incorrect password

// error is an object having 3 properties : name, message & code
});

如何在Node.js中读取受密码保护的PDF文件并将其保存在缓冲区中？

1 个答案: