掃描識別工具Dynamic Web TWAIN使用教程：條碼讀取器（下）

使用條形碼識別在文檔數字化中自動分類

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本篇文章將繼續與大家分享如何使用條形碼識別在文檔數字化中自動分類。

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（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，你可以檢查服務器上的上傳圖像

對于模式2，3

本篇文章到此結束~ 你還可以。

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