整合前端

ruoyi-ui/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" :on-remove="handleDelete" :show-file-list="true" :headers="headers" :file-list="fileList"
+      :on-preview="handlePictureCardPreview" :class="{ hide: 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>
+
+    <el-dialog :visible.sync="dialogVisible" title="预览" width="800" append-to-body>
+      <img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
+    </el-dialog>
+  </div>
+</template>
+
+<script>
+import { getToken } from "@/utils/auth";
+
+export default {
+  props: {
+    value: [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
+    },
+    field: {
+      type: String,
+      default: 'ossId'
+    }
+  },
+  data () {
+    return {
+      number: 0,
+      uploadList: [],
+      dialogImageUrl: "",
+      dialogVisible: false,
+      hideUpload: false,
+      baseUrl: "",
+      uploadImgUrl: process.env.VUE_APP_BASE_API + "/system/oss/upload", // 上传的图片服务器地址
+      headers: {
+        Authorization: "Bearer " + getToken(),
+      },
+      fileList: []
+    };
+  },
+  watch: {
+    value: {
+      handler (val) {
+        if (val) {
+          // 首先将值转为数组
+          const list = Array.isArray(val) ? val : this.value.split(',');
+          // 然后将数组转为对象数组
+          this.fileList = list.map(item => {
+            if (typeof item === "string") {
+              if (item.indexOf(this.baseUrl) === -1) {
+                item = { name: this.baseUrl + item, url: this.baseUrl + item };
+              } else {
+                item = { name: item, url: item };
+              }
+            }
+            return item;
+          });
+        } else {
+          this.fileList = [];
+          return [];
+        }
+      },
+      deep: true,
+      immediate: true
+    }
+  },
+  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.$modal.msgError(`文件格式不正确, 请上传${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.$modal.msgError(`上传头像图片大小不能超过 ${this.fileSize} MB!`);
+          return false;
+        }
+      }
+      this.$modal.loading("正在上传图片，请稍候...");
+      this.number++;
+    },
+    // 文件个数超出
+    handleExceed () {
+      this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
+    },
+    // 上传成功回调
+    handleUploadSuccess (res, file) {
+      if (res.code === 200) {
+        console.log(res)
+        this.uploadList.push({ ossId: res.data.ossId, name: res.data.fileName, url: res.data.url });
+        this.$emit('success', this.uploadList);
+        this.uploadedSuccessfully();
+      } else {
+        this.number--;
+        this.$modal.closeLoading();
+        this.$modal.msgError(res.msg);
+        this.$refs.imageUpload.handleRemove(file);
+        this.uploadedSuccessfully();
+      }
+    },
+    // 删除图片
+    handleDelete (file) {
+      const findex = this.fileList.map(f => f.name).indexOf(file.name);
+      if (findex > -1) {
+        this.fileList.splice(findex, 1);
+        this.$emit("input", this.listToString(this.fileList));
+      }
+    },
+    // 上传失败
+    handleUploadError () {
+      this.$modal.msgError("上传图片失败，请重试");
+      this.$modal.closeLoading();
+    },
+    // 上传结束处理
+    uploadedSuccessfully () {
+      if (this.number > 0 && this.uploadList.length === this.number) {
+        this.fileList = this.fileList.concat(this.uploadList);
+        this.$emit("success", this.uploadList);
+        this.uploadList = [];
+        this.number = 0;
+        this.$emit("input", this.listToString(this.fileList));
+        this.$modal.closeLoading();
+      }
+    },
+    // 预览
+    handlePictureCardPreview (file) {
+      this.dialogImageUrl = file.url;
+      this.dialogVisible = true;
+    },
+    // 对象转成指定字符串分隔
+    listToString (list, separator) {
+      let strs = "";
+      separator = separator || ",";
+      for (let i in list) {
+        if (list[i].url) {
+          strs += list[i].url.replace(this.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
+::v-deep.hide .el-upload--picture-card {
+  display: none;
+}
+
+// 去掉动画效果
+::v-deep .el-list-enter-active,
+::v-deep .el-list-leave-active {
+  transition: all 0s;
+}
+
+::v-deep .el-list-enter,
+.el-list-leave-active {
+  opacity: 0;
+  transform: translateY(0);
+}
+</style>