APP文件新增

JeecgUniapp-master/src/common/areaData/pcaUtils.ts

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+import {areaList} from '@vant/area-data'
+
+// 扁平化的省市区数据
+export const pcaa = freezeDeep(usePlatPcaaData())
+
+/**
+ * 获取扁平化的省市区数据
+ */
+function usePlatPcaaData() {
+  const {city_list: city, county_list: county, province_list: province} = areaList;
+  const dataMap = new Map<string, Recordable>()
+  const flatData: Recordable = {'86': province}
+  // 省
+  Object.keys(province).forEach((code) => {
+    flatData[code] = {}
+    dataMap.set(code.slice(0, 2), flatData[code])
+  })
+  // 市区
+  Object.keys(city).forEach((code) => {
+    flatData[code] = {}
+    dataMap.set(code.slice(0, 4), flatData[code])
+    // 填充上一级
+    const getProvince = dataMap.get(code.slice(0, 2))
+    if (getProvince) {
+      getProvince[code] = city[code]
+    }
+  });
+  // 县
+  Object.keys(county).forEach((code) => {
+    // 填充上一级
+    const getCity = dataMap.get(code.slice(0, 4))
+    if (getCity) {
+      getCity[code] = county[code]
+    }
+  });
+  return flatData
+}
+
+
+/**
+ *
+ * 深度冻结对象
+ * @param obj Object or Array
+ */
+export function freezeDeep(obj: Recordable | Recordable[]) {
+  if (obj != null) {
+    if (Array.isArray(obj)) {
+      obj.forEach(item => freezeDeep(item))
+    } else if (typeof obj === 'object') {
+      Object.values(obj).forEach(value => {
+        freezeDeep(value)
+      })
+    }
+    Object.freeze(obj)
+  }
+  return obj
+}