vue 之 ele上传文件

• 一点击选取文件的时候，直接对接后端接口，上传文件，获取返回的数据对象
• 可以删除已上传的文件，也需要对接后端接口进行删除

<template>
  <div class="upload_file clear_fix">
    <!-- <div>uploadAllFile -- {{ uploadAllFile }}</div> -->
    <div class="upload_file_title">{{ title }}</div>
    <div class="upload_file_btn">
    < !--  这个可以不需要的  可以删除这两个外层的！
      <el-form :model="uploadForm" οnsubmit="return false">
        <el-form-item label="">  -->
          <el-upload
            ref="uploadForm"
            action=""
            :file-list="fileList"
            :on-change="handleFileChange"
            :on-remove="removeFile"
            :auto-upload="false"
            multiple
          >
            <el-button size="small" type="primary" slot="trigger"
              >选取文件</el-button
            >
          </el-upload>
        </el-form-item>
      </el-form>
      <div class="upload_file_tip">
        <div>支持格式：</div>
        <div>jpg、png、</div>
        <div>docx、xlsx等</div>
      </div>
    </div>
  </div>
</template>

<script>
import axios from "axios";
import { baseUrl } from "@/utils/request.js";
import { removeFileGet } from "@/api/creditManagement/singleAdd/singleAdd.js";
export default {
  name: "UploadFile",
  components: {},
  data() {
    return {
      title: "上传文件：",
      fileList: [],
      uploadForm: {},
      file: {}, // 上传文件
      uploadAllFile: [], // 上传的文件的所有数据
    };
  },
  watch: {
    uploadAllFile(val) {
      this.uploadAllFile = val;
      this.$emit("uploadAllFile", this.uploadAllFile);
    },
  },
  methods: {
    //上传文件，获取文件流
    handleFileChange(file, fileList) {
      this.file = file.raw;
      // 创建表单对象 用于数据的格式  + 用于添加流文件！
      let formData = new FormData();
      formData.append("files", this.file);
      // 发起请求 对接后端接口 + 需要导出基础的url + Token值！
      axios
        .post(baseUrl + "/eap/uploadFile", formData, {
          headers: {
            "Content-Type": "multipart/form-data",
            Token: JSON.parse(sessionStorage.getItem("token")),
          },
        })
        .then(({ data }) => {
          // console.log("data", data.dat);
          if (data.code == 0) {
            file.buisid = data.dat[0].buisid; // 给当前文件 添加一个id 可用于删除文件！
            this.uploadAllFile.push(data.dat[0]);
            this.$message({ type: "success", message: "上传文件成功" });
          } else {
            this.$message({ type: "success", message: "上传文件失败" });
          }
        });
    },
    // 删除文件
    removeFile(file) {
      // console.log("移除文件", file);
      removeFileGet(file.buisid).then(({ data }) => {
        if (data.code == 0) {
          this.$message({ type: "success", message: "删除文件成功" });
        } else {
          this.$message({ type: "success", message: data.dat });
        }
      });
      this.uploadAllFile = this.uploadAllFile.filter((item) => {
        return item.buisid != file.buisid;
      });
    },
  },
};
</script>
<style  lang="scss" scoped>
.upload_file {
  position: relative;
  top: -10px;
  .upload_file_title {
    float: left;
    text-align: right;
    width: 110px;
    height: 40px;
    line-height: 40px;
  }
  .upload_file_btn {
    position: relative;
    float: left;
  }
  .upload_file_tip {
    position: absolute;
    top: 35px;
    left: 0px;
    width: 80px;
    height: 49px;

    div {
      font-size: 12px;
      font-family: SourceHanSansCN-Regular, SourceHanSansCN;
      font-weight: 400;
      color: #b9bcc5;
      line-height: 14px;
    }
  }
}
::v-deep .el-button--small {
  padding: 6px 16px !important;
}
::v-deep .el-upload-list {
  position: relative;
  left: 100px;
  top: -34px;
  width: 640px;
  background: #000;
  clear: both;
  li {
    float: left;
    width: 33% !important;
  }
  .el-upload-list__item {
    margin-top: 10px !important;
  }
}
</style>