pdf 在线预览之 vue-pdf插件的使用_vue-pdf4.2.0版本

vue-pdf的安装

支持兼容到 IE11

npm install --save vue-pdf@4.2.0
1

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：

<!--
  @anthor: mrdeng Lei,
  @description: pdf文件在线预览--本地开发预览在线文件会出现跨域问题，需要将浏览器配置跨域处理即可，发布到线上后跨域问题就不会存在了，目前该版本兼容谷歌，火狐,IE11等现代浏览器
  @date: 2021/1/1,
  @remark:
 -->
<!--
 引用示例：
  <pdfPreview :pdfUrl="pdfUrl"  :doctype="docType" ref="pdf" />
  pdfUrl:pdf在线地址 例如：http://125.35.91.158:8099/group1/M00/02/AF/wKgAplxrloqAdR6NAAcOcVILFv0518.pdf
s
  doctype(String)：文件类型 默认pdf 
  -->
<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>


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<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>
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<style lang="scss" scoped>
/* 弹窗的外层样式 */
.pre_lump {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1111;
}

.pre_lump .choice_box {
  position: absolute;
  width: 60%;
  min-width: 850px;
  height: 90%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #ffffff;
  border-radius: 2px;
}
#example {
  width: 100%;
  height: 100%;
}
.top_tips {
  margin: 0 20px;
  height: 54px;
  line-height: 54px;
  border-bottom: 1px solid rgb(233, 233, 233);
}

.top_tips .tips {
  font-size: 18px;
  font-weight: 500;
  color: #333333;
}

.top_tips i {
  font-size: 18px;
  color: #333333;
}
.bot_bottom_bot {
  position: absolute;
  right: 2%;
  bottom: 3%;
  border-top: 1px solid rgb(233, 233, 233);
}
.form-data {
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
  height: calc(90% - 60px);
  margin: 15px auto;
  overflow-y: auto;
}
.pagination {
  position: absolute;
  left: 50%;
  bottom: 10%;
  transform: translate(-50%, 0%);
}

.pagination .arrow2 span {
  cursor: pointer;
  display: inline-block;
  background-color: #e53935;
  color: #fff;
  padding: 4px 6px;
  font-size: 12px;
  border-radius: 6px;
}

.close {
  width: 34px;
  height: 34px;
  margin: 10px 0;
  display: flex;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.close .el-icon-close {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.el-icon-close:hover {
  color: red;
  background-color: #f0f0f0;
  border-radius: 50%;
}
</style>

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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>
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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