element-ui 圖片上傳組件封裝

<template>
  <div>
    <el-upload
      list-type="picture-card"
      class="avatar-uploader"
      :action="action"
      :auto-upload="true"
      :data="uploadData"
      name="file"
      :show-file-list="true"
      :on-success="handleSuccess"
      :before-upload="beforeUpload"
      :on-exceed="handleExceed"
      :on-remove="handleRemove"
      accept="image/png, image/jpeg, image/gif, image/jpg"
      :limit="1"
    >
      <img v-if="imageUrl" :src="imageUrl" class="avatar" />
      <i v-else class="el-icon-plus avatar-uploader-icon"></i>
      <!-- remove圖標沒有起作用 -->
      <i slot="default" class="el-icon-plus"></i>
      <div slot="file" slot-scope="{file}">
        <!-- <img class="el-upload-list__item-thumbnail" :src="imageUrl" alt /> -->
        <span class="el-upload-list__item-actions">
          <span v-if="!disabled" class="el-upload-list__item-delete">
            <i class="el-icon-delete"></i>
          </span>
        </span>
      </div>
    </el-upload>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // action: process.env.VUE_APP_IMG_URL + "/image/upload",
      action: "http://img.tourdev.cn:8001/nv2/image/upload",
      disabled: false,
      uploadData: {
        file: "",
        project: "JINXINSERVE_WEB"
      },
      imageUrl: ""
    };
  },
  props: {
    coverUrl: {
      type: String,
      default: ""
    }
  },
  created() {
    this.imageUrl = this.coverUrl;
  },
  methods: {
    handleRemove(file) {
      this.$emit("getUrlFn", "");
    },
    beforeUpload(file) {
      this.uploadData.file = file;
      const isLt2M = file.size / 1024 / 1024 < 2;
      if (!isLt2M) {
        this.$message.error("上傳頭像圖片大小不能超過 2MB!");
        return isLt2M;
      }
    },
    handleSuccess(res, file) {
      // this.imageUrl = URL.createObjectURL(file.raw);
      // 獲取后端對上傳圖片存儲位置的路徑，
      if (res.code === 200) {
        // console.log("pic", res);
        this.imageUrl = "";
        // this.$emit("getUrlFn", res.url);
        this.$emit("getUrlFn", res.browser);
      } else {
        this.$message.error("圖片上傳失敗");
      }
    },
    handleExceed(files, fileList) {
      this.$message.error("只能上傳一張圖片");
    }
  }
};
</script>
<style scope>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 148px;
  height: 148px;
  line-height: 148px;
  text-align: center;
}
.avatar {
  width: 148px;
  height: 148px;
  display: block;
}
</style>

//顯示編輯圖片

<template>
  <div>
    <el-upload
      class="avatar-uploader"
      :action="action"
      :auto-upload="true"
      :data="uploadData"
      name="file"
      :show-file-list="false"
      :on-success="handleSuccess"
      :before-upload="beforeUpload"
      accept="image/png, image/jpeg, image/gif, image/jpg"
    >
      <!-- remove圖標沒有起作用 -->
      <div slot="file" slot-scope="{file}">
        <span class="el-upload-list__item-actions">
          <span v-if="!disabled" class="el-upload-list__item-delete" @click="handleRemove(file)">
            <i class="el-icon-delete"></i>
          </span>
        </span>
      </div>
      <img v-if="imageUrl" :src="imageUrl" class="avatar" />
      <i v-else class="el-icon-plus avatar-uploader-icon"></i>
    </el-upload>
  </div>
</template>
<script>
export default {
  data() {
    return {
      action: "http://img.tourdev.cn:8001/nv2/image/upload",
      disabled: false,
      uploadData: {
        file: "",
        project: "JINXINSERVE_WEB"
      },
      imageUrl: ""
    };
  },
  props: {
    coverUrl: {
      type: String,
      default: ""
    }
  },
  created() {},
  watch: {
    coverUrl(val) {
      this.imageUrl = val;
    }
  },
  methods: {
    handleRemove(file) {
      console.log(file);
    },

    beforeUpload(file) {
      this.uploadData.file = file;
      const isLt2M = file.size / 1024 / 1024 < 2;
      if (!isLt2M) {
        this.$message.error("上傳頭像圖片大小不能超過 2MB!");
        return isLt2M;
      }
    },
    handleSuccess(res, file) {
      // this.imageUrl = URL.createObjectURL(file.raw);
      // 獲取后端對上傳圖片存儲位置的路徑，
      if (res.code === 200) {
        this.imageUrl = res.url;
        this.$emit("getUrlFn", this.imageUrl);
      } else {
        this.$message.error("圖片上傳失敗");
      }
    }
  }
};
</script>
<style scope>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 148px;
  height: 148px;
  line-height: 148px;
  text-align: center;
}
.avatar {
  width: 148px;
  height: 148px;
  display: block;
}
</style>