Question

我正在尝试使用jsPDF-lib将图像添加到PDF文件中。 PDF已创建，但图像已损坏，如下所示：

enter image description here

我在我的代码中使用了相同的数据网址，如下例所示：http://parall.ax/products/jspdf 我的完整代码如下：

    <!DOCTYPE html>
<!--
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
    with the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
-->
<html>
    <head>
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
        <link rel="stylesheet" type="text/css" href="css/index.css" />
                <!-- Scripts down here -->
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
        <script type="text/javascript" src="jspdf.js"></script>
        <script type="text/javascript" src="jspdf.plugin.addimage.js"></script>
        <title>Hello World</title>
    </head>
    <body>
        <script type="text/javascript" src="cordova-2.7.0.js"></script>
        <script type="text/javascript">
        var doc;

        function clicked()  {
            doc = new jsPDF();
            var imgData = 'data:image/jpeg;base64, ***DATAURL_HERE***';
            doc.setFontSize(40);
            doc.text(35, 25, "Test-PDF");
            doc.addImage(imgData, 'JPEG', 15, 40, 180, 180);
            writeFile();
            alert("File was written");
            }

        function writeFile() {
            window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFSSuccess, onError);
        }

        function onFSSuccess(fs) {
            fileSystem = fs;
            createRoot();            
        }

        function createRoot(e) {
            fileSystem.root.getDirectory("Download/", {create: true}, createFile);
        }

        function createFile(dirEntry) {
            var dir = "Test.pdf";
            dirEntry.getFile(dir, {create: true, exclusive: true}, saveFileToRoot);
        }

        function saveFileToRoot(f) {
            f.createWriter(function(writerOb) {
                writerOb.write(doc.output());
            });
        }

        function onError(e) {
        }

        </script>
    <h1>Testfile working</h1>
    <button onclick="clicked()">Clickme</button>
    </body>
</html>

任何想法！？将不胜感激每一个帮助！

Answer 1

为Canvas网址图片更改 DATAURL_HERE ，您可以使用此功能进行计算：

var imgData = canvas.toDataURL（＆＃39; image / png＆＃39;）;

使用jsPDF / HTML5以PDF格式插入图像不起作用

1 个答案: