vue+springboot pdf打印预览

pdf打印预览

1.下载pdfjs插件链接：http://mozilla.github.io/pdf.js/

2.pdfjs插件引入项目中：

①本地运行可将pdfjs放入vue项目的static文件夹下（本项目放在/static/pdf/下）

②如果在linux服务器部署建议将pdfjs单独放一个文件夹，打包可能引起访问路径的文件名发生变化，如果你有更好的方法，everything will be ok!

3.vue搞一搞

<el-button size="small" type="primary" @click="pdfPrint()">打印预览</el-button>

pdfPrint() {
       this.$http({
        //首先需要生成pdf文件
         url: `/project/outPdf/exportPdf`,
         method: 'post',
         data: this.dataForm
       }).then(({data}) => {
         if (data && data.code === 0) {
           let url = ''
        //根据本地和linux服务器pdf存放的位置进行配置
           if (this.$http.BASE_URL === 'http://127.0.0.1') {
             url = '/static/pdf/web/viewer.html?file='
           } else {
             url = '/pdf/web/viewer.html?file='
           }
           let pdfUrl = encodeURIComponent(this.$http.BASE_URL + `/project/outPdf/pdfFileStream?token=${this.$cookie.get('token')}&fileName=${fileName}`)
           window.open(url + pdfUrl)
         }
       })
     }        

4.后台返回文件流来一波

/**
   *返回文件流
 **/
@RequestMapping("/pdfFileStream")
    public void pdfStreamHandeler(String fileName,HttpServletRequest request, HttpServletResponse response) {
        try {
            String pdfPath = filePath + fileName;

            File file = new File(pdfPath);
            byte [] data = null;
            FileInputStream inputStream = null;
            inputStream = new FileInputStream(file);
            data=new byte[inputStream.available()];
            inputStream.read(data);
            response.getOutputStream().write(data);
            inputStream.close();
            response.setHeader("Access-Control-Allow-Origin", "*");
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

我踩过的坑希望大家都能跳过去~