初始化项目

src/components/upload/common.vue

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+<template>
+  <div>
+    <el-upload
+      :action="`${path}/fileUploadAndDownload/upload`"
+      :before-upload="checkFile"
+      :headers="{ 'x-token': userStore.token }"
+      :on-error="uploadError"
+      :on-success="uploadSuccess"
+      :show-file-list="false"
+      class="upload-btn"
+    >
+      <el-button size="small" type="primary">普通上传</el-button>
+    </el-upload>
+  </div>
+</template>
+
+<script setup>
+
+import { ref } from 'vue'
+import { ElMessage } from 'element-plus'
+import { useUserStore } from '@/pinia/modules/user'
+
+const emit = defineEmits(['on-success'])
+const path = ref(import.meta.env.VITE_BASE_API)
+
+const userStore = useUserStore()
+const fullscreenLoading = ref(false)
+
+const checkFile = (file) => {
+  fullscreenLoading.value = true
+  const isJPG = file.type === 'image/jpeg'
+  const isPng = file.type === 'image/png'
+  const isLt2M = file.size / 1024 / 1024 < 0.5
+  if (!isJPG && !isPng) {
+    ElMessage.error('上传图片只能是 jpg或png 格式!')
+    fullscreenLoading.value = false
+  }
+  if (!isLt2M) {
+    ElMessage.error('未压缩未见上传图片大小不能超过 500KB，请使用压缩上传')
+    fullscreenLoading.value = false
+  }
+  return (isPng || isJPG) && isLt2M
+}
+
+const uploadSuccess = (res) => {
+  const { data } = res
+  if (data.file) {
+    emit('on-success', data.file.url)
+  }
+}
+
+const uploadError = () => {
+  ElMessage({
+    type: 'error',
+    message: '上传失败'
+  })
+  fullscreenLoading.value = false
+}
+
+</script>
+
+<script>
+
+export default {
+  name: 'UploadCommon',
+  methods: {
+
+  }
+}
+</script>

src/components/upload/image.vue

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+
+<template>
+  <div>
+    <el-upload
+      :action="`${path}/fileUploadAndDownload/upload`"
+      :headers="{ 'x-token': userStore.token }"
+      :show-file-list="false"
+      :on-success="handleImageSuccess"
+      :before-upload="beforeImageUpload"
+      :multiple="false"
+    >
+      <el-button size="small" type="primary">压缩上传</el-button>
+    </el-upload>
+  </div>
+</template>
+
+<script setup>
+import ImageCompress from '@/utils/image'
+import { ref } from 'vue'
+import { ElMessage } from 'element-plus'
+import { useUserStore } from '@/pinia/modules/user'
+
+const emit = defineEmits(['on-success'])
+const props = defineProps({
+  imageUrl: {
+    type: String,
+    default: ''
+  },
+  fileSize: {
+    type: Number,
+    default: 2048 // 2M 超出后执行压缩
+  },
+  maxWH: {
+    type: Number,
+    default: 1920 // 图片长宽上限
+  }
+})
+
+const path = ref(import.meta.env.VITE_BASE_API)
+
+const userStore = useUserStore()
+
+const beforeImageUpload = (file) => {
+  const isJPG = file.type === 'image/jpeg'
+  const isPng = file.type === 'image/png'
+  if (!isJPG && !isPng) {
+    ElMessage.error('上传头像图片只能是 jpg或png 格式!')
+    return false
+  }
+
+  const isRightSize = file.size / 1024 < props.fileSize
+  if (!isRightSize) {
+    // 压缩
+    const compress = new ImageCompress(file, props.fileSize, props.maxWH)
+    return compress.compress()
+  }
+  return isRightSize
+}
+
+const handleImageSuccess = (res) => {
+  const { data } = res
+  if (data.file) {
+    emit('on-success', data.file.url)
+  }
+}
+
+</script>
+
+<script>
+
+export default {
+  name: 'UploadImage',
+  methods: {
+
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.image-uploader {
+  border: 1px dashed #d9d9d9;
+  width: 180px;
+  border-radius: 6px;
+  cursor: pointer;
+  position: relative;
+  overflow: hidden;
+}
+.image-uploader {
+  border-color: #409eff;
+}
+.image-uploader-icon {
+  font-size: 28px;
+  color: #8c939d;
+  width: 178px;
+  height: 178px;
+  line-height: 178px;
+  text-align: center;
+}
+.image {
+  width: 178px;
+  height: 178px;
+  display: block;
+}
+</style>