element Compressor图片压缩且上传-

 上传了压缩后的照片

<template>
  <div>
    <!-- <el-upload :class="uploadDisabled" ref="upload" :action="action" :headers="headers" list-type="picture-card"
      :limit="1" :file-list="fileList" :on-exceed="handleExceed" :on-preview="handlePictureCardPreview"
      :on-remove="handleRemove" :on-success="handleSuccess" :before-upload="beforeUpload" :http-request="customUpload">
      <i class="el-icon-plus"></i>
    </el-upload> -->
    <el-upload :class="uploadDisabled" ref="upload" :action="action" :headers="headers" list-type="picture-card"
      :limit="1" :file-list="fileList" :on-exceed="handleExceed" :on-preview="handlePictureCardPreview"
      :on-remove="handleRemove" :before-upload="beforeUpload" :http-request="customUpload">
      <i class="el-icon-plus"></i>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
      <img width="100%" :src="dialogImageUrl" alt="" />
    </el-dialog>
  </div>
</template>

<script>
import { uploadImage } from '@/api/homeApi';
import Compressor from "compressorjs";
export default {
  props: {
    upImg: {
      type: String,
      default: () => {
        return "";
      },
    },
    uploadType: {
      type: String,
      default: () => {
        return "";
      },
    },
  },
  data() {
    return {
      action: this.$store.state.app.actionUrl,
      dialogImageUrl: "",
      dialogVisible: false,
      fileList: [],
      uploadDisabled: "",
      attachmentId: [],
      headers: {
        "author-token-key": localStorage.getItem("token"),
      },
    };
  },
  created() {
    this.fileList = this.upImg ? [{ url: this.upImg }] : [];
    console.log("action", this.action);
  },
  watch: {
    upImg: {
      handler(newData, oldData) {
        this.fileList = newData ? [{ url: newData }] : [];
        if (this.fileList.length > 0) {
          this.uploadDisabled = "disabled";
        } else {
          this.uploadDisabled = "";
        }
      },
      deep: true,
    },
  },
  methods: {
    handleRemove(file, fileList) {
      this.attachmentId = [];
      if (this.uploadType == "front") {
        this.$emit("getFrontImg", "");
      } else if (this.uploadType == "verso") {
        this.$emit("getVersoImg", "");
      } else if (this.uploadType == "enteerprise") {
        this.$emit("getEnterpriseImg", "");
      }
      this.uploadDisabled = "";
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url;
      this.dialogVisible = true;
    },
    handleSuccess(res, file) {
      console.log(res, file, '成功')
      // this.attachmentId.push(res);
      // if (this.attachmentId.length > 0) {
      //   this.uploadDisabled = "disabled";
      // }
      // if (this.uploadType == "front") {
      //   this.$emit("getFrontImg", res.data);
      // } else if (this.uploadType == "verso") {
      //   this.$emit("getVersoImg", res.data);
      // } else if (this.uploadType == "enteerprise") {
      //   this.$emit("getEnterpriseImg", res.data);
      // }
    },
    beforeUpload(file) {
      const isJPG =
        file.type === "image/jpeg" ||
        file.type === "image/jpg" ||
        file.type === "image/png";
      const isLt5M = file.size / 1024 / 1024 < 5;
      if (!isJPG) {
        this.$message.error("上传图片只能是 JPG/JPEG/PNG 格式!");
        return false
      }
      if (!isLt5M) {
        this.$message.error("上传图片大小不能超过 5MB!");
        return false
      }
      // return isJPG && isLt5M;
      //=====
      const image = new Image();
      image.src = URL.createObjectURL(file);
      let fileSize = file.size; //照片尺寸大小
      let imgsize = fileSize / 1024;
      if (imgsize < 10) {
        this.$message.error("上传图片大小不能小于10kb");
        return false
      } else if (imgsize < 200) {
        console.log("图片不超过200k不压缩,直接上传")
      } else if (fileSize < 5 * 1024 * 1024) {
        console.log('需要压缩')
        this.customUploadys(file)
        return false
      } else {
        this.$message.error("超出允许的文件大小");
        return false
      }
    },
    handleExceed(files, fileList) {
      this.$message.warning("只能上传一张图片");
      return false
    },
    //手动上传
    customUpload(file) {
      const formdd = new FormData();
      // 文件对象
      formdd.append("file", file.file);
      uploadImage(formdd).then(res => {
        this.attachmentId.push(res.data);
        if (this.attachmentId.length > 0) {
          this.uploadDisabled = "disabled";
        }
        if (this.uploadType == "front") {
          this.$emit("getFrontImg", res.data.data);
        } else if (this.uploadType == "verso") {
          this.$emit("getVersoImg", res.data.data);
        } else if (this.uploadType == "enteerprise") {
          this.$emit("getEnterpriseImg", res.data.data);
        }
      })
    },
    customUploadys(file) {
      let _this = this;
      new Compressor(file, {
        quality: 0.6,
        width: 380,
        success(result) {
          let blob = new Blob([result], {
            type: 'image/jpeg'
          })
          let url = window.URL.createObjectURL(blob)
          // 构建FormData
          let formData = new FormData();
          //注意：此处第3个参数最好传入一个带后缀名的文件名，否则很有可能被后台认为不是有效的图片文件
          formData.append("file", blob, file.name);
          uploadImage(formData).then(res => {
            _this.attachmentId.push(res.data);
            if (_this.attachmentId.length > 0) {
              _this.uploadDisabled = "disabled";
            }
            if (_this.uploadType == "front") {
              _this.$emit("getFrontImg", res.data.data);
            } else if (_this.uploadType == "verso") {
              _this.$emit("getVersoImg", res.data.data);
            } else if (_this.uploadType == "enteerprise") {
              _this.$emit("getEnterpriseImg", res.data.data);
            }
          })
        },
        error(err) {
          console.log(err.message);
          return false
        },
      })
    }
  },
};
</script>

<style lang="less">
.disabled .el-upload--picture-card {
  display: none;
}
</style>

export function uploadImage(data) {
  return util.http({
    url: `/sdfs/file/uploadImage`,
    method: 'post',
    // headers: { "content-type": "multipart/form-data" },
    data
  })
}