[{"id":"b66f8b1e-cc14-4e89-9679-abd5687d283d","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"569bb90a-ea68-46c6-96f1-ab151c120714","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"5eb52f08-2d1a-4362-9ffc-4871bdc10f3f","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"341dd607-b97d-4d70-bde2-53acda6b6c95","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"05349273-414f-4208-9ea2-c4fc8f4ea2cb","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"86089f76-b778-4d52-821e-6f27de3df613","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b81e4fd6-1fc5-43a0-a258-b6e16a5cbec6","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"8aa8ce31-43e4-438e-951f-241608435260","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"37343f41-6ec2-4c7e-b21d-2cc18d5ce1e0","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"5915e52f-64f8-4146-b8bd-81bead6324a3","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"836ba889-af9e-460d-a4cc-c24d922795f2","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4ae14b06-bb68-4394-a210-a46b8f028346","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d8f42066-e9dc-4411-bdcf-43b1a203370c","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"7ef86f16-b1a0-49f7-9592-612b9be02b25","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b29c7775-a9a4-451e-a1b5-01d19ed5ca5e","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"e56f3989-8f81-46af-90fa-a4813eeb976f","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"2526c963-f170-45a8-923e-91b0712a9810","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"24575cf0-501a-44f9-8426-c40f8f4b5552","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"1a6f8d7f-acd6-42be-8c4f-f464c6218381","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"82b176fd-5cab-498c-909e-8fa7d29c38d8","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"1708b3a9-4f37-44a8-8f0e-f9a2d2e5d940","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"c9ac246e-29fb-4bc4-8231-8439795bb590","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"94f2a5c3-2539-436a-af75-23fbbd1a3957","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d99594f4-2d40-4df4-9419-ba2ca6aa3f7f","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"fd66e72d-0f10-4f57-9807-6db26290ab2e","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"8f344863-503d-4bc3-a594-3815e7d55f5c","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"9be82601-de9d-4c18-948a-23ab6f4dd431","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"6495f3c0-b463-47e0-b08a-ca949672211e","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"b4bede08-3f08-4839-ba4a-abc7ac195bde","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4afcdfc0-3ff5-4f2b-a223-f8fc042a5bbe","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"422062c4-fa40-4771-a86f-008efe6d86e5","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"d87e8013-86a7-4840-8d25-6f62e14eb4ac","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"a6acedfd-4043-4c64-a5d1-aec3326df9e7","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"dbdc0b24-06c4-48b9-8d6c-7455119dc773","tags":[{"product":null,"links":null,"id":"9e117e35-984a-4c14-95ca-ef0ec7b9fb60","name":"\u65B0\u589E","color":"DarkGreen","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"a3856849-954a-4cfc-96a6-382e530d3638","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]},{"id":"4a39306b-ffa5-433d-80a3-28e41f929b72","tags":[{"product":null,"links":null,"id":"a2f84374-4a3f-4d22-96fd-765e9de495bf","name":"\u66F4\u65B0","color":"Coral","productId":"098be112-50ec-44e4-b746-6bc8bf76af97"}]}]
        
(Showing Draft Content)

导出PDF中文乱码问题

SpreadJS 导出PDF是一个强大的功能,解决了很多用户的实际问题,但是在导出PDF时有些问题始终困扰着很多开发者,例如排版、字体乱码等问题。

有很多刚接触SpreadJS的朋友就会对导出pdf乱码以及要注册中文字体这个问题非常不解。这是PDF文件的特殊性造成的。PDF是Portable Document Format的简称,意为“便携式文档格式”,它原生仅仅带有英文字体,不包含任何中文字体,因此当导出的内容中含有中文字体编码时,一定会显示乱码,所以通常情况下,我们都需要为PDF进行字体注册操作。

下载需要的字体文件:

链接:https://pan.baidu.com/s/1Cw33CHC-aE9YmGyhLBlYlw 密码:sq4v

注意,整个工程需要部署到服务器来运行,否则可能因为跨域问题访问不到字体文件。

部署方法:https://blog.csdn.net/u014255803/article/details/73832072

注册分为服务器端注册和前端注册。

前端注册:

  1. 确认我们的表单需要用到哪些字体

  2. 去找对应字体的ttf文件(电脑上或者是一些字体网站上都有,需注意版权问题)。

  3. 找到之后将其转为base64格式的文件。具体如何转,可以找一些在线的文件转换器,不过在线的有可能会因为字体文件太大而崩溃,或者有能力的大佬可以自己写一个转换的工具。然后通过下面的方式去把我们的字体文件存储为一个js文件去等待引用。

image

将字体的ttf文件转为base64编码后通过js引入来导入,下面代码中 fontsObj["simkai.ttf"]就是对应的ttf字体base64编码

        function registerCustomFont(fontsObj) {
            var fonts = {
                normal: fontsObj["simkai.ttf"]
            };
            GC.Spread.Sheets.PDF.PDFFontsManager.registerFont('simkai', fonts);
        }

服务器端注册

由于字体文件通常比较大,而前端注册字体的方法要求在页面加载时就要加载进来,这会导致前端加载时间长,影响性能。而且字体文件的base64编码通常也需要事先生成,这给开发同学们带来了不小的麻烦。

后台字体文件注册可以解决这些问题,字体文件在服务器上存储,只有当需要导出PDF时才执行加载操作。

代码如下,serverPath为服务器端指定PDF字体位置:

function registerServerFont(name, type, serverPath) {
            var xhr = new XMLHttpRequest();
            xhr.open('GET', serverPath, true);
            xhr.responseType = 'blob';

            xhr.onload = function (e) {
                if (this.status == 200) {
                    // get binary data as a response
                    var blob = this.response;

                    //将Blob 对象转换成 ArrayBuffer
                    var reader = new FileReader();
                    reader.onload = function (e) {
                        var fontrrayBuffer = reader.result;
                        var fonts = GC.Spread.Sheets.PDF.PDFFontsManager.getFont(name) || {};
                        fonts[type] = fontrrayBuffer;
                        GC.Spread.Sheets.PDF.PDFFontsManager.registerFont(name, fonts);
                    }
                    reader.readAsArrayBuffer(blob);
                }
            };

            xhr.send();
        }

OK,熟悉Ajax的同学就明白了这里实际上采用了XMLHttpRequest对象的数据流读取了blob格式的字体文件,然后把这个流直接注册到PDFFontsManager中,实现了字体注册操作。

调用方法很简单,如下:

registerServerFont('微软雅黑', 'normal', 'font/msyh.ttf');

第一个参数对应了PDF中的字体名称,最后一个参数指定了字体文件的相对路径。

如果设置的字体在后台字体库中没有怎么办?其实解决方法也很简单,我们的客户需要的首先应该是一个能够阅读的PDF文件,当服务器端没有对应的字体文件时,可以指定别的字体库来代替,例如:

registerServerFont('Times New Roman', 'normal', 'font/simsun.ttf');



作者: Grapecity.China | 审核:Ellia.Duan | 更新时间:2023.12.13