feature：代码初始化。

src/components/ImageUpload/index.vue

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+<template>
+  <div class="component-upload-image">
+    <el-upload
+      multiple
+      :action="uploadImgUrl"
+      list-type="picture-card"
+      :on-success="handleUploadSuccess"
+      :before-upload="handleBeforeUpload"
+      :limit="limit"
+      :on-error="handleUploadError"
+      :on-exceed="handleExceed"
+      ref="imageUpload"
+      :before-remove="handleDelete"
+      :show-file-list="true"
+      :headers="headers"
+      :file-list="fileList"
+      :on-preview="handlePictureCardPreview"
+      :class="{ hide: fileList.length >= limit }"
+    >
+      <el-icon class="avatar-uploader-icon"><plus /></el-icon>
+    </el-upload>
+    <!-- 上传提示 -->
+    <div class="el-upload__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>
+
+    <el-dialog v-model="dialogVisible" title="预览" width="800px" append-to-body>
+      <img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
+    </el-dialog>
+  </div>
+</template>
+
+<script setup>
+import { getToken } from '@/utils/auth'
+
+const props = defineProps({
+  modelValue: [String, Object, 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
+  },
+  uploadUrl: {
+    type: String,
+    default: '/file/upload'
+  },
+  isToString: {
+    type: Boolean,
+    default: false
+  }
+})
+
+const { proxy } = getCurrentInstance()
+const emit = defineEmits([])
+const number = ref(0)
+const uploadList = ref([])
+const dialogImageUrl = ref('')
+const dialogVisible = ref(false)
+const baseUrl = import.meta.env.VITE_APP_BASE_API
+const uploadImgUrl = ref(import.meta.env.VITE_APP_BASE_API + props.uploadUrl) // 上传的图片服务器地址
+const headers = ref({ Authorization: 'Bearer ' + getToken() })
+const fileList = ref([])
+const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize))
+
+watch(
+  () => props.modelValue,
+  (val) => {
+    if (val) {
+      console.log(typeof val)
+      // 首先将值转为数组
+      const list = Array.isArray(val) ? val : props.modelValue.split(',')
+      // 然后将数组转为对象数组
+      fileList.value = list.map((item) => {
+        if (typeof item === 'string') {
+          item = { name: item, url: item }
+        }
+        return item
+      })
+    } else {
+      fileList.value = []
+      return []
+    }
+  },
+  { deep: true, immediate: true }
+)
+
+// 上传前loading加载
+function handleBeforeUpload(file) {
+  let isImg = false
+  if (props.fileType.length) {
+    let fileExtension = ''
+    if (file.name.lastIndexOf('.') > -1) {
+      fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
+    }
+    isImg = props.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) {
+    proxy.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join('/')}图片格式文件!`)
+    return false
+  }
+  if (props.fileSize) {
+    const isLt = file.size / 1024 / 1024 < props.fileSize
+    if (!isLt) {
+      proxy.$modal.msgError(`上传头像图片大小不能超过 ${props.fileSize} MB!`)
+      return false
+    }
+  }
+  proxy.$modal.loading('正在上传图片，请稍候...')
+  number.value++
+}
+
+// 文件个数超出
+function handleExceed() {
+  proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`)
+}
+
+// 上传成功回调
+function handleUploadSuccess(res, file) {
+  if (res.code === 200) {
+    uploadList.value.push(res.data)
+    uploadedSuccessfully()
+  } else {
+    number.value--
+    proxy.$modal.closeLoading()
+    proxy.$modal.msgError(res.msg)
+    proxy.$refs.imageUpload.handleRemove(file)
+    uploadedSuccessfully()
+  }
+}
+
+// 删除图片
+function handleDelete(file) {
+  const findex = fileList.value.map((f) => f.name).indexOf(file.name)
+  if (findex > -1 && uploadList.value.length === number.value) {
+    fileList.value.splice(findex, 1)
+    if (props.isToString) {
+      emit('update:modelValue', listToString(fileList.value))
+    } else {
+      emit('update:modelValue', fileList.value)
+    }
+    return false
+  }
+}
+
+// 上传结束处理
+function uploadedSuccessfully() {
+  if (number.value > 0 && uploadList.value.length === number.value) {
+    fileList.value = fileList.value.filter((f) => f.url !== undefined).concat(uploadList.value)
+    uploadList.value = []
+    number.value = 0
+    console.log('props.isToString.value---<', props.isToString)
+    if (props.isToString) {
+      emit('update:modelValue', listToString(fileList.value))
+    } else {
+      emit('update:modelValue', fileList.value)
+    }
+    proxy.$modal.closeLoading()
+  }
+}
+// 上传失败
+function handleUploadError() {
+  proxy.$modal.msgError('上传图片失败')
+  proxy.$modal.closeLoading()
+}
+
+// 预览
+function handlePictureCardPreview(file) {
+  dialogImageUrl.value = file.url
+  dialogVisible.value = true
+}
+
+// 对象转成指定字符串分隔
+function listToString(list, separator) {
+  let strs = ''
+  separator = separator || ','
+  for (const i in list) {
+    if (undefined !== list[i].url && list[i].url.indexOf('blob:') !== 0) {
+      strs += list[i].url.replace(baseUrl, '') + separator
+    }
+  }
+  return strs !== '' ? strs.substr(0, strs.length - 1) : ''
+}
+</script>
+
+<style scoped lang="scss">
+// .el-upload--picture-card 控制加号部分
+:deep(.hide .el-upload--picture-card) {
+  display: none;
+}
+</style>