pdf 在线预览之 vue-pdf插件的使用

vue-pdf的安装

支持兼容到 IE11

npm install --save vue-pdf@4.2.0

封装组件

由于该组件在我开发的项目中使用的地方比较多，是一个通用型组件，所以这里对它进行封装；
注意：本项目使用的UI库是element UI

pdfPreview.vue
代码如下：

<template>
  <div class="pre_lump" v-if="dialogVisible">
    <div class="choice_box">
      <div class="clearfix top_tips">
        <p class="fl tips">预览p>
        <p @click="Visible()" class="close fr">
          <i class="el-icon-close">i>
        p>
      div>
      <div class="form-data">
        <div class="pdf" id="example">
          <pdf
            ref="pdf"
            v-if="pdfSrc"
            :src="pdfSrc"
            :page="currentPage"
            @num-pages="pageCount = $event"
            @page-loaded="currentPage = $event"
            @loaded="loadPdfHandler"
          >
          pdf>
        div>
      div>
      <div class="pagination">
        <p class="arrow2" v-if="pdfSrc">
          <el-button
            type="primary"
            size="mini"
            @click="changePdfPage(0)"
            :disabled="currentPage == 1"
            >上一页el-button
          >
          {{ currentPage }} / {{ pageCount }}
          <el-button
            type="primary"
            size="mini"
            @click="changePdfPage(1)"
            :disabled="currentPage == pageCount"
            >下一页el-button
          >
        p>
      div>
      <div class="bot_bottom_bot">
        <el-button size="small" type="primary" @click="dialogVisible = false"
          >返回el-button
        >
      div>
    div>
  div>
template>

<script>
import pdf from "vue-pdf";
export default {
  name: "pdfPreview",
  components: {
    pdf
  },
  props: {
    // pdf地址
    pdfUrl: {
      type: String,
      default: "http://125.35.91.158:8099/group1/M00/02/AF/wKgAplxrloqAdR6NAAcOcVILFv0518.pdf"
    },
    // 文件类型
    doctype: {
      type: String,
      default: "pdf"
    }
  },
  data() {
    return {
      dialogVisible: false,
      typeValue: "", //文件类型
      pdfSrc: "",
      currentPage: 0, // pdf文件页码
      pageCount: 0, // pdf文件总页数
      numPages: 1,
      activeIndex: 0,
      acceptFileType: ["pdf"]
    };
  },
  watch: {
    pdfUrl(val) {
      console.log("pdfSrc", val);
      this.pdfSrc = val;
    },
    doctype(typeval) {
      if (!this.acceptFileType.includes(typeval)) {
        this.$message.error(`只能预览${this.acceptFileType[0]}类型的文件`);
        return false;
      }
      this.typeValue = typeval;
    }
  },
  mounted() {
    this.pdfSrc = "";
    this.pdfSrc = this.pdfUrl;
  },
  methods: {
    Visible() {
      this.dialogVisible = !this.dialogVisible;
    },
    // 改变PDF页码,val传过来区分上一页下一页的值,0上一页,1下一页
    changePdfPage(val) {
      if (val === 0 && this.currentPage > 1) {
        this.currentPage--;
      }
      if (val === 1 && this.currentPage < this.pageCount) {
        this.currentPage++;
      }
    },
    // pdf加载时
    loadPdfHandler(e) {
      this.currentPage = 1; // 加载的时候先加载第一页
    }
  }
};
</script>

自己的页面中引用

<template>
  <div class="hello">
      <pdfPreview :pdfUrl="pdfUrl" doctype="pdf" ref="pdf" />
       <el-link
       class="link"
        type="success"
@click="preview('http://125.35.91.158:8099/group1/M00/02/AF/wKgAplxrloqAdR6NAAcOcVILFv0518.pdf') "
                  >预览
       el-link>
  div>
template>


<script>
import pdfPreview from "@/components/pdfPreview";
export default {
  name: 'HelloWorld',
  components: {
    pdfPreview 
  },
  data () {
    return {
        pdfUrl: "http://125.35.91.158:8099/group1/M00/02/AF/wKgAplxrloqAdR6NAAcOcVILFv0518.pdf", //预览url
     
    }
  },
  mounted(){
  },
  methods:{
    // 预览
    preview(url) {
    this.pdfUrl= url;
    this.$refs.pdf.Visible();
    },
  }
}
script>

如果有电子签章 是显示不出来的
需要改动源码 注释掉type判断


效果如下 这样章就出现了~~~

本文参考：https://www.cnblogs.com/chen-yi-yi/p/11504861.html