UNION_NSI/target/classes/static/components/plugins/ImageUpload.vue

<template>
  <div class="component-upload-image">
    <el-upload
        :style="{'--box-width': width + 'px', '--box-height': height + 'px'}"
        multiple
        :action="FILE_UPLOAD_ADDRESS"
        list-type="picture-card"
        :on-success="handleUploadSuccess"
        :before-upload="handleBeforeUpload"
        :limit="limit"
        :on-error="handleUploadError"
        :on-exceed="handleExceed"
        ref="imageUpload"
        :on-remove="handleDelete"
        :file-list="fileList"
        :on-preview="handlePictureCardPreview"
        :class="{hidePic: this.fileList.length >= this.limit}"
    >
      <i class="el-icon-plus"></i>
    </el-upload>

    <!-- 上传提示 -->
    <div class="el-upload__tip" slot="tip" v-if="showTip">
      请上传
      <template v-if="fileSize"> 大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b></template>
      <template v-if="fileType"> 格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b></template>
      的文件
    </div>
  </div>
</template>

<script>
module.exports = {
  name: "ImageUpload",
  props: {
    value: [String, Array],
    // 图片数量限制
    limit: {
      type: Number,
      default: 5,
    },
    // 大小限制(MB)
    fileSize: {
      type: Number,
      default: 5,
    },
    // 文件类型, 例如['png', 'jpg', 'jpeg']
    fileType: {
      type: Array,
      default: () => ["png", "jpg", "jpeg"],
    },
    // 是否显示提示
    isShowTip: {
      type: Boolean,
      default: true
    },
    height: {
      type: Number,
      default: 100
    },
    width: {
      type: Number,
      default: 100
    }
  },
  data() {
    return {
      dialogImageUrl: "",
      dialogVisible: false,
      hideUpload: false,
      fileList: []
    }
  },
  watch: {
    value: {
      immediate: true,
      deep: true,
      handler(val) {
        if (val) {
          let fff = []
          fff = Array.isArray(val) ? [...val] : [val]
          this.fileList = fff.map(v => {
            return {
              name: v,
              url: CREATE_PREVIEW_URL(v)
            }
          })
        }
      }
    }
  },
  computed: {
    // 是否显示提示
    showTip() {
      return this.isShowTip && (this.fileType || this.fileSize);
    },
  },
  methods: {
    // 上传前loading加载
    handleBeforeUpload(file) {
      let isImg = false;
      if (this.fileType.length) {
        let fileExtension = "";
        if (file.name.lastIndexOf(".") > -1) {
          fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
        }
        isImg = this.fileType.some(type => {
          if (file.type.indexOf(type) > -1) return true;
          if (fileExtension && fileExtension.indexOf(type) > -1) return true;
          return false;
        });
      } else {
        isImg = file.type.indexOf("image") > -1;
      }

      if (!isImg) {
        this.$message.error(`文件格式不正确, 请上传${this.fileType.join("/")}图片格式文件!`);
        return false;
      }
      if (this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize;
        if (!isLt) {
          this.$message.error(`上传头像图片大小不能超过 ${this.fileSize} MB!`);
          return false;
        }
      }
    },
    // 文件个数超出
    handleExceed() {
      this.$message.error(`上传文件数量不能超过 ${this.limit} 个!`);
    },
    // 上传成功回调
    handleUploadSuccess(res, file) {
      if (res.code === 0) {
        if (this.limit === 1) {
          this.$emit("input", res.data.filepath)
        } else {
          if (this.value && Array.isArray(this.value)) {
            const v = [...this.value, res.data.filepath]
            this.$emit("input", v)
          } else {
            this.$emit("input", [res.data.filepath])
          }
        }
      } else {
        this.$message.error(res.msg);
        this.$refs.imageUpload.handleRemove(file);
      }
    },
    // 删除图片
    async handleDelete(file) {
      const resp = await $.post(FILE_DELETE_ADDRESS, {id: file.name})
      const findex = this.fileList.map(f => f.name).indexOf(file.name);
      if (findex > -1) {
        this.fileList.splice(findex, 1)
        if (this.limit === 1) {
          this.$emit("input", this.fileList.map(v => v.name).join('、'))
        } else {
          this.$emit("input", this.fileList.map(v => v.name))
        }
      }
      /*if (resp.code === 0) {
        this.$message.success(resp.msg)
        const findex = this.fileList.map(f => f.name).indexOf(file.name);
        if (findex > -1) {
          this.fileList.splice(findex, 1)
          if (this.limit === 1) {
            this.$emit("input", this.fileList.map(v => v.name).join('、'))
          } else {
            this.$emit("input", this.fileList.map(v => v.name))
          }
        }
      } else {
        this.$message.warning(resp.msg)
      }*/


    },
    // 上传失败
    handleUploadError() {
      this.$message.error("上传图片失败，请重试");
    },
    // 预览
    handlePictureCardPreview(file) {
      if (file.url) {
        let image = new Image();
        image.src = file.url
        let viewer = new Viewer(image);
        viewer.show();
      } else {
        viewImage(file.response.data.id)
      }
    }
  }
}
</script>

<style scoped>
.component-upload-image .el-upload--picture-card {
  width: var(--box-width, '100px') !important;
  height: var(--box-height, '100px') !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.el-upload--picture-card i {
  font-size: 1em;
}

.el-upload-list--picture-card .el-upload-list__item {
  width: var(--box-width, '100px');
  height: var(--box-height, '100px');
}

.hidePic .el-upload--picture-card {
  display: none !important;
}

.el-list-enter-active,
.el-list-leave-active {
  transition: all 0s;
}

.el-list-enter, .el-list-leave-active {
  opacity: 0;
  transform: translateY(0);
}

.component-upload-image {
  height: inherit;
}

.component-upload-image > div:nth-child(1) {
  width: 100%;
  height: 100%;
}

.el-upload__tip {
  text-align: left;
}
</style>