掃描識(shí)別工具Dynamic Web TWAIN使用教程：條碼讀取器（下）

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使用條形碼識(shí)別在文檔數(shù)字化中自動(dòng)分類

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本篇文章將繼續(xù)與大家分享如何使用條形碼識(shí)別在文檔數(shù)字化中自動(dòng)分類。

步驟10 添加分類的JavaScript代碼

function UploadFiles() {
    DWObject.IfShowProgressBar = false;
    ProcssedImagesCount = 0;
    imageArrays = [];
    aryIndicesMode1 = [];
    aryIndicesMode2 = [];
    aryIndicesMode3 = {
        'noBarcode': []
    };
    Dynamsoft.Lib.showMask();
    ReadBarcode(0);
}

function ReadBarcode(i) {
    var j, sImageIndex = i,
        bBarcodeFound = false,
        strSelectedMode = document.getElementsByName('UploadModes');
    for (j = 0; j < strSelectedMode.length; j++) {
        if (strSelectedMode.item(j).checked == true) {
            strSelectedMode = strSelectedMode.item(j).value;
            break;
        }
    }
    if (sImageIndex == DWObject.HowManyImagesInBuffer)
        return;
    if (dbrObject) {
        var settings = dbrObject.getRuntimeSettings();
        settings.mBarcodeFormatIds = BarcodeInfo[document.getElementById("barcodeformat").selectedIndex].val;
        dbrObject.updateRuntimeSettings(settings);
        DWObject.CurrentImageIndexInBuffer = sImageIndex;
        var barcodeImage = DWObject.GetImageURL(sImageIndex, -1, -1);
        dbrObject.decode(barcodeImage).then(function (results) {
            ProcssedImagesCount++;
            if (results.length == 0) {
                console.log("No barcode found on image " + (sImageIndex + 1));
                if (bBarcodeFound == true) {
                    bBarcodeFound = false;
                    aryIndicesMode1[aryIndicesMode1.length - 1].push(sImageIndex);
                    if (aryIndicesMode2.length == 0)
                        aryIndicesMode2.push([sImageIndex]);
                    else
                        aryIndicesMode2[aryIndicesMode2.length - 1].push(sImageIndex);
                } else {
                    if (aryIndicesMode1.length == 0)
                        aryIndicesMode1.push([sImageIndex]);
                    else
                        aryIndicesMode1[aryIndicesMode1.length - 1].push(sImageIndex);
                    if (aryIndicesMode2.length == 0)
                        aryIndicesMode2.push([sImageIndex]);
                    else
                        aryIndicesMode2[aryIndicesMode2.length - 1].push(sImageIndex);
                }
                aryIndicesMode3.noBarcode.push(sImageIndex);
            } else {
                bBarcodeFound = true;
                console.log("Barcode found on image " + (sImageIndex + 1));

                aryIndicesMode1.push([sImageIndex]);
                if (aryIndicesMode2.length == 0)
                    aryIndicesMode2.push([]);
                else if (aryIndicesMode2[aryIndicesMode2.length - 1].length != 0)
                    aryIndicesMode2.push([]);
                var barcodeOnThisImage = [],
                    allKeys = [];
                for (j = 0; j < results.length; j++) {
                    var result = results[j];
                    var barcodeText = result.BarcodeText;
                    if (barcodeOnThisImage.indexOf(barcodeText) == -1)
                        barcodeOnThisImage.push(barcodeText);
                    console.log("The content for barcode number " + (j + 1) + "is: " + barcodeText);
                    var imageArray = {
                        index: sImageIndex,
                        text: barcodeText
                    };
                    imageArrays.push(imageArray);
                }

                Dynamsoft.Lib.each(aryIndicesMode3, function (value, key) {
                    allKeys.push(key);
                });

                for (j = 0; j < allKeys.length; j++) {
                    var oKey = allKeys[j];
                    if (barcodeOnThisImage.indexOf(oKey) != -1) {
                        barcodeOnThisImage.splice(barcodeOnThisImage.indexOf(oKey), 1);
                        var _value = aryIndicesMode3[oKey];
                        if (_value.indexOf(sImageIndex) == -1) {
                            _value.push(sImageIndex);
                            aryIndicesMode3[oKey] = _value;
                        }
                    }
                }
                for (j = 0; j < barcodeOnThisImage.length; j++) {
                    aryIndicesMode3[barcodeOnThisImage[j]] = [sImageIndex];
                }
            }
            if (ProcssedImagesCount == DWObject.HowManyImagesInBuffer) {
                ProcssedImagesCount = 0;
                var aryTemp = [];
                Dynamsoft.Lib.each(aryIndicesMode3, function (value, key) {
                    aryTemp.push(value);
                });
                aryIndicesMode3 = aryTemp;
                Dynamsoft.Lib.hideMask();
                switch (strSelectedMode) {
                    case 'mode1':
                        console.log(aryIndicesMode1);
                        break;
                    case 'mode2':
                        console.log(aryIndicesMode2);
                        break;
                    case 'mode3':
                        console.log(aryIndicesMode3);
                        break;
                }
            }
            /*
             * Read the next image
             */
            ReadBarcode(sImageIndex + 1);
        }, function (ex) {
            console.log("Error reading barcode: " + ex.message);
            Dynamsoft.Lib.hideMask();
        });

加載一些圖像并單擊“Separate（分離）”，然后檢查瀏覽器控制臺(tái)（F12）

步驟11 添加上傳代碼和后端代碼（在C#中）以接收分離的文件

function UploadImagesSeparatedByBarcode(ary) {
    var i, Digital, uploadfilename, CurrentPathName = unescape(location.pathname),
        CurrentPath = CurrentPathName.substring(0, CurrentPathName.lastIndexOf("/") + 1),
        strActionPage = CurrentPath + "SaveToFile.aspx";
    DWObject.IfSSL = Dynamsoft.Lib.detect.ssl;
    var _strPort = location.port == "" ? 80 : location.port;
    if (Dynamsoft.Lib.detect.ssl == true)
        _strPort = location.port == "" ? 443 : location.port;
    DWObject.HTTPPort = _strPort;
    strFullActionPagePath = location.protocol + "//" + location.hostname + ":" + DWObject.HTTPPort + strActionPage;
    for (i = 0; i < ary.length; i++) {
        if (ary[i].length == 0) {
            ary.splice(i, 1);
            i--;
            continue;
        }
        Digital = new Date();
        uploadfilename = 'Doc_' + i + '_' + Digital.getMilliseconds() + '_' + (Math.floor(Math.random() * 1000 + 1)).toString() + '.pdf';
        DWObject.HTTPUpload(strFullActionPagePath, ary[i], EnumDWT_ImageType.IT_PDF, EnumDWT_UploadDataFormat.Binary, uploadfilename, function () { }, function () { });
    }
}
HttpFileCollection files = HttpContext.Current.Request.Files;
HttpPostedFile uploadfile = files["RemoteFile"];
String Path = System.Web.HttpContext.Current.Request.MapPath(".") + "/ImageScanned/";
if (!Directory.Exists(Path))
{
    Directory.CreateDirectory(Path);
}
uploadfile.SaveAs(Path + uploadfile.FileName);

步驟12 更改代碼以上傳文件

更新以下內(nèi)容

switch (strSelectedMode) {
    case 'mode1': console.log(aryIndicesMode1); break;
    case 'mode2': console.log(aryIndicesMode2); break;
    case 'mode3': console.log(aryIndicesMode3); break;
}

至

switch (strSelectedMode) {
    case 'mode1': UploadImagesSeparatedByBarcode(aryIndicesMode1); break;
    case 'mode2': UploadImagesSeparatedByBarcode(aryIndicesMode2); break;
    case 'mode3': UploadImagesSeparatedByBarcode(aryIndicesMode3); break;
}

步驟13 刷新頁面，再次加載圖像，單擊“Separate”。然后，你可以檢查服務(wù)器上的上傳圖像

對(duì)于模式2，3

本篇文章到此結(jié)束~ 你還可以在線測(cè)試代碼。

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