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  • SheetJS 入门案例

    js插件下载地址:

    https://github.com/SheetJS/js-xlsx

    https://github.com/SheetJS/js-xls 

    <!doctype html>
    <html>
        <head>
        <title>EXCEL转JSON</title>
        <meta charset="UTF-8" />
        <script type="text/javascript" src="http://mat1.gtimg.com/www/asset/lib/jquery/jquery/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="/xls/js/xls.js"></script>
        <script type="text/javascript" src="/xls/js/jszip.js"></script>
        <script type="text/javascript" src="/xls/js/xlsx.js"></script>
        </head>
        <body>
        <div>
            <input type='file' onchange='readFile(event)'>
        </div>
        <div>
            <textarea id='debug' rows="50" cols="200"></textarea>
        </div>
        </body>
        <script>
            var excel = new Object();
            var sheet = new Object();
            var row = new Object();
            var cell = new Object();
            var x ;
            var wb;
            var output;
            var filename;
            var rows_a,rows_b;
            var cols_a,cols_b;
            var range = new Object();
            
            var readFile = function(event) {
                var read = new FileReader();
                var file = event.target.files[0];
                read.readAsBinaryString(file);
                filename = file.name;
                read.onload = function (event){    
                    var res = event.currentTarget.result;
                    var fileType = getFileType(filename).toString();
                    switch (fileType){
                        case '.xls':
                            x = XLS;
                            break;
                        case '.xlsx':
                            x = XLSX;
                            break;    
                        default:
                            x = null;
                    }
                    if(x){
                        wb = x.read(res, { type: 'binary' });
                        excel = getEXCEL(wb);
                        output = excel;
                    }else{
                        var info =  {error:'can not resolve file end with :'+fileType};
                        output = getOutput(info,'obj');
                    }
                    console.log(output);
                    out_json =  getOutput(output,'json');
                    $('#debug').val(out_json);
                    
                 };
            };
            
            function getEXCEL(wb){
                var Sheetnames = wb.SheetNames;
                var Sheets = new Object();
                var Sheet = new Object();
                
                Sheets = wb.Sheets;
                excel['sheetSize'] = Sheetnames.length.toString();
                excel['excelName'] = filename;
                excel["sheets"] = [];
                
                
                for(var i=0;i<Sheetnames.length;i++){
                    Sheet = Sheets[Sheetnames[i]];
                    range = getRanger(Sheet['!ref']);
                    rows_a = range.row;
                    cols_a = range.col;    
                    var m = 0;
                    sheet = new Object();
                    sheet['rowSize'] = rows_a.toString();
                    sheet['colSize'] = cols_a.toString();
                    sheet['sheetName'] = Sheetnames[i];
                    sheet["rows"] = [];
                    sheet["title"] = new Object();
                    for(var j=0;j<rows_a;j++){
                        row = new Object();
                        row['cells'] = [];
                        for(var m=0;m<cols_a;m++){
                            cell = new Object();
                            row['cells'].push(cell);
                        }
                        sheet["rows"].push(row);
                    }
                    for(k in Sheet){
                        if(isCell(k)){
                            range = getRanger(k);
                            rows_b = range.row.toString();
                            cols_b = range.col.toString();
                            row = sheet["rows"][rows_b-1];
                            row.val = null;
                            row.val = 'true';
                            cell = row['cells'][cols_b-1];
                            cell.value = null;
                            cell.value = Sheet[k].w;
                        }
                    }
                    for(t in sheet["rows"]){
                        var tit = sheet["rows"][t];
                        if(tit.val){
                            sheet["title"] = sheet["rows"][t];
                            break;
                        }
                    }
                    excel["sheets"].push(sheet);
                }
                return excel;
            }
            
            function isCell(str){
                var reg = /^[a-zA-Z]+[0-9]+$/;
                return reg.test(str);
            }
            
            function getRowNumber(key){
                var reg = /[0-9]+$/;
                var rownumber = reg.exec(key);
                return rownumber;
            }
            
            function getColLetter(key){
                var reg = /^[a-zA-Z]+/;
                var colletter = reg.exec(key);
                return colletter;
            }
            
            function getColNumber(key){
                var reg = /[a-zA-Z]+/;
                var colletter = reg.exec(key);
                return colletter;
            }
            
            function getOutput(obj,type){
                switch (type){
                    case 'json' :
                        return JSON.stringify(obj);
                        break;
                    case 'obj'  :
                        return obj;
                        break;
                    default :
                        return JSON.stringify(obj);
                }
            }
            
            function getRanger(ref){
                if(ref == undefined){
                    range.row = "0";
                    range.col = "0";
                }else{
                    var reg = /:[a-zA-Z]+[0-9]+/;
                    var reg2 = /^[a-zA-Z]+[0-9]+$/;
                    var pos = reg.exec(ref);
                    if(pos == undefined ){
                        pos = reg2.exec(ref);
                    }
                    var r = getRowNumber(pos).toString();
                    var codes = [];
                    var n;
                    var letter = getColNumber(pos).toString();
                    letter = letter.toLocaleLowerCase();
                    n = 0;
                    for(i in letter){
                        var code = letter[i].charCodeAt()-96;
                        codes[i] = code;
                        n++;
                    }
                    n--;
                    var mathstr = 0;
                    for(j in codes){
                        mathstr = 'Math.pow(26,'+n+')*'+codes[j] + '+'+ mathstr;
                        n--;
                    }
                    var    c = eval(mathstr).toString();
                    range.row = r;
                    range.col = c;
                }
                return range;
            }
            
            function getFileType(filepath){
                var reg = /.[a-zA-Z0-9]+$/;
                var filePostfix = reg.exec(filepath);
                return filePostfix;
            }
        </script>
    </html>
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  • 原文地址:https://www.cnblogs.com/caer/p/7067313.html
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