新增图片上传组件

src/components/ImageUpload/index.vue

@@ -0,0 +1,197 @@
+<template>
+  <div class="component-upload-image">
+    <el-upload
+      :action="uploadImgUrl"
+      list-type="picture-card"
+      :on-success="handleUploadSuccess"
+      :before-upload="handleBeforeUpload"
+      :limit="limit"
+      :on-error="handleUploadError"
+      :on-exceed="handleExceed"
+      name="file"
+      :on-remove="handleRemove"
+      :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
+  },
+});
+
+const { proxy } = getCurrentInstance();
+const emit = defineEmits();
+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 + "/common/upload"); // 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) {
+    // 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") {
+        if (item.indexOf(baseUrl) === -1) {
+          item = { name: baseUrl + item, url: baseUrl + item };
+        } else {
+          item = { name: item, url: item };
+        }
+      }
+      return item;
+    });
+  } else {
+    fileList.value = [];
+    return [];
+  }
+});
+
+// 删除图片
+function handleRemove(file, files) {
+  const findex = fileList.value.map(f => f.name).indexOf(file.name);
+  if (findex > -1) {
+    fileList.value.splice(findex, 1);
+    emit("update:modelValue", listToString(fileList.value));
+  }
+}
+
+// 上传成功回调
+function handleUploadSuccess(res) {
+  fileList.value.push({ name: res.fileName, url: res.fileName });
+  emit("update:modelValue", listToString(fileList.value));
+  proxy.$modal.closeLoading();
+}
+
+// 上传前loading加载
+function handleBeforeUpload(file) {
+  let isImg = false;
+  if (props.fileType.length) {
+    let fileExtension = "";
+    if (file.name.lastIndexOf(".") > -1) {
+      fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
+    }
+    isImg = props.fileType.some(type => {
+      if (file.type.indexOf(type) > -1) return true;
+      if (fileExtension && fileExtension.indexOf(type) > -1) return true;
+      return false;
+    });
+  } else {
+    isImg = file.type.indexOf("image") > -1;
+  }
+  if (!isImg) {
+    proxy.$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("上传中");
+}
+
+// 文件个数超出
+function handleExceed() {
+  proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
+}
+
+// 上传失败
+function handleUploadError() {
+  proxy.$modal.msgError("上传失败");
+  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 (let i in list) {
+    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;
+}
+// 去掉动画效果
+:deep(.el-list-enter-active),
+:deep(.el-list-leave-active) {
+  transition: all 0s;
+}
+:deep(.el-list-enter, .el-list-leave-active) {
+  opacity: 0;
+  transform: translateY(0);
+}
+</style>

src/main.js

@@ -31,6 +31,8 @@ import { parseTime, resetForm, addDateRange, handleTree, selectDictLabel } from
 import Pagination from '@/components/Pagination'
 // 自定义表格工具组件
 import RightToolbar from '@/components/RightToolbar'
+// 图片上传组件
+import ImageUpload from "@/components/ImageUpload"
 // 自定义树选择组件
 import TreeSelect from '@/components/TreeSelect'
 // 字典标签组件
@@ -51,6 +53,7 @@ app.config.globalProperties.selectDictLabel = selectDictLabel
 app.component('DictTag', DictTag)
 app.component('Pagination', Pagination)
 app.component('TreeSelect', TreeSelect)
+app.component('ImageUpload', ImageUpload)
 app.component('RightToolbar', RightToolbar)
 
 app.use(router)