我已经使用了cdn for jsZip,并在参考官方文档后尝试生成PDF文件并将其压缩为.zip格式。
代码: -
var zip = new JSZip();
zip.file("Hello.pdf", "Hello World\n");
zip.file("Alphabet.pdf", "abcdef\n");
zip.generateAsync({type:"blob"})
.then(function(content) {
saveAs(content, "example.zip");
});
但是,我面临的问题是虽然我能够最终生成.zip文件。我无法读取PDF文件,因为它一直说格式已损坏。 (即使对于.xls / xlsx格式也会发生同样的事情,我对.doc和.txt格式文件没有同样的问题。)
the error message on trying to open PDF file
我做错了什么?我还需要做什么?这让我得到了解决!任何帮助将不胜感激。
编辑: - @Fefux - 我尝试过这些方法,先生成pdf内容然后压缩为.zip,但它也不起作用!
function create_zip() {
var dynamicSITHtml = '<div class="container"><div class="row margin-top">';
dynamicSITHtml = dynamicSITHtml + '<table><thead><tr><th>Target Date/Time</th><th>Referred To Role</th><th>Description</th><th>Priority</th><th>Status</th></tr></thead><tbody>';
dynamicSITHtml = dynamicSITHtml + '</tbody></table></div></div>';
$scope.dymanicSITHtml = dynamicSITHtml;
var pdf1 = new jsPDF('p', 'pt', 'letter');
var ElementHandlers = {
'#editor': function (element, renderer) {
return true;
}
};
pdf1.fromHTML($scope.dymanicSITHtml, 10, 10, {
'width': 1000,
'elementHandlers': ElementHandlers
});
//pdf1.save($scope.operation.ReferenceNumber + '_task_summary_report.pdf');
var zip = new JSZip();
zip.file("Hello.pdf", pdf1.save($scope.operation.ReferenceNumber + '_task_summary_report.pdf'));
zip.generateAsync({ type: "blob" })
.then(function (content) {
saveAs(content, "example.zip");
});
请帮助!!
这是一个更新的代码副本..... 我试图利用js-xlsx库 - https://github.com/SheetJS/js-xlsx - 生成xls文件然后压缩它。 请参考以下代码..
function Create_Zip() {
function datenum(v, date1904) {
if (date1904) v += 1462;
var epoch = Date.parse(v);
return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}
function sheet_from_array_of_arrays(data, opts) {
var ws = {};
var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } };
for (var R = 0; R != data.length; ++R) {
for (var C = 0; C != data[R].length; ++C) {
if (range.s.r > R) range.s.r = R;
if (range.s.c > C) range.s.c = C;
if (range.e.r < R) range.e.r = R;
if (range.e.c < C) range.e.c = C;
var cell = { v: data[R][C] };
if (cell.v === null) continue;
var cell_ref = XLSX.utils.encode_cell({ c: C, r: R });
if (typeof cell.v === 'number') cell.t = 'n';
else if (typeof cell.v === 'boolean') cell.t = 'b';
else if (cell.v instanceof Date) {
cell.t = 'n'; cell.z = XLSX.SSF._table[14];
cell.v = datenum(cell.v);
}
else cell.t = 's';
ws[cell_ref] = cell;
}
}
if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
return ws;
}
var data = [[1, 2, 3], [true, false, null, "sheetjs"], ["foo", "bar", new Date("2014-02-19T14:30Z"), "0.3"], ["baz", null, "qux"]];
var ws_name = "SheetJS";
function Workbook() {
if (!(this instanceof Workbook)) return new Workbook();
this.SheetNames = [];
this.Sheets = {};
}
var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
/* add worksheet to workbook */
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = ws;
var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: true, type: 'binary' });
function s2ab(s) {
var buf = new ArrayBuffer(s.length);
var view = new Uint8Array(buf);
for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
return buf;
}
var jsonse = JSON.stringify([s2ab(wbout)]);
var testblob = new Blob([jsonse], { type: "application/json" });
console.log(testblob);
var zip = new JSZip();
zip.file("trial.xls", testblob);
var downloadFile = zip.generateAsync({ type: "blob" });
saveAs(downloadFile, 'test.zip');
}
但是,问题在于我不断收到此错误:'trial.xls'的数据格式不受支持!'在控制台:(。 我有什么方法可以做到这一点吗?
答案 0 :(得分:2)
您有错误,因为您没有压缩pdf文件。您压缩一个名为Hello.pdf的文件,该文件的内容是&#34; Hello world \ n&#34;但这不是有效的PDF内容(与Alphabet.pdf相同)。
您需要生成有效的PDF内容并将其压缩后。
编辑:工作jsFiddle:https://jsfiddle.net/55gdt8ra/
$(function() {
var doc = new jsPDF();
doc.setFontSize(40);
doc.text(35, 25, "Octonyan loves jsPDF");
var zip = new JSZip();
zip.file("Hello.pdf", doc.output());
zip.generateAsync({ type: "blob" })
.then(function (content) {
saveAs(content, "example.zip");
});
})