项目初始化

src/app/shared/utils/date.util.ts

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+export class EADateUtil {
+  /**
+   * @description 时间戳转换日期
+   * @param timestamp 时间戳
+   * @returns 时间戳对应的日期
+   */
+  static timestampToDate(timestamp: number): Date {
+    let date;
+    // 时间戳为10位需*1000，时间戳为13位的话不需乘1000
+    if (timestamp.toString().length === 10) {
+      date = new Date(timestamp * 1000);
+    } else {
+      date = new Date(timestamp);
+    }
+
+    const Y = date.getFullYear();
+    const M = date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1;
+    const D = date.getDate();
+    const h = date.getHours();
+    const m = date.getMinutes();
+    const s = date.getSeconds();
+
+    const dateStr = `${Y}-${M}-${D} ${h}:${m}:${s}`;
+    return new Date(dateStr);
+  }
+
+  /**
+   * @description 日期相加
+   * @param start 开始日期
+   * @param intervalMS 间隔秒数（毫秒）
+   * @returns 相加后的日期
+   */
+  static dateAdd(start: Date, intervalMS: number): Date {
+    return this.timestampToDate(start.getTime() + intervalMS);
+  }
+
+  /**
+   * @description 日期相减
+   * @param start 开始日期
+   * @param intervalMS 时间间隔（毫秒）
+   * @returns 相减后的日期
+   */
+  static dateMinus(start: Date, intervalMS: number): Date {
+    return this.timestampToDate(start.getTime() - intervalMS);
+  }
+
+  /**
+   * @description 计算两个日期的时间差
+   * @param start 开始日期
+   * @param end 结束日期
+   * @returns 两时间相差的毫秒数
+   */
+  static dateDiff(start: Date, end: Date): number {
+    return start.getTime() - end.getTime();
+  }
+}

src/app/shared/utils/file.util.ts

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+import { Injectable } from '@angular/core';
+import { _HttpClient } from '@delon/theme';
+import * as FileSaver from 'file-saver';
+import { NzModalService } from 'ng-zorro-antd/modal';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class EAFileUtil {
+  constructor(private modal: NzModalService, private http: _HttpClient) {}
+
+  /**
+   * 保存文件
+   * @param content 需要保存的内容
+   * @param filename 文件名
+   * @param confirm 显示确认框
+   */
+  save(content: any, filename: string, confirm: boolean = true): void {
+    const blob = new Blob([JSON.stringify(content)], { type: 'text/plain;charset=utf-8' });
+    if (confirm === true) {
+      this.modal.confirm({
+        nzTitle: '<i>文件下载确认</i>',
+        nzContent: `<b>是否下载文件：<u><i>${filename}</i></u> ？</b>`,
+        nzOnOk: () => {
+          FileSaver.saveAs(blob, filename);
+        },
+      });
+    } else {
+      FileSaver.saveAs(blob, filename);
+    }
+  }
+
+  /**
+   * @param url 接口地址
+   * @param body post请求参数
+   * @param params get请求参数
+   * @method 请求方法
+   */
+  download(url: string, body: any, params: any, method: 'POST' | 'GET' = 'POST'): void {
+    if (method === 'POST') {
+      this.http
+        .post(url, body, params, {
+          responseType: 'blob',
+          observe: 'response',
+        })
+        .subscribe((res) => {
+          this.saveBlob(res);
+        });
+    } else if (method === 'GET') {
+      this.http
+        .get(url, params, {
+          responseType: 'blob',
+          observe: 'response',
+        })
+        .subscribe((res) => {
+          this.saveBlob(res);
+        });
+    }
+  }
+
+  /**
+   * 创建blob对象，并利用浏览器打开url进行下载
+   * @param data 文件流数据
+   */
+  private saveBlob(res: any): void {
+    const disp = res.headers.get('Content-Disposition');
+    const blob = new Blob([res.body], { type: 'text/plain;charset=utf-8' });
+    const url = window.URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    const fileName = disp.split(';')[1].split('=')[1];
+    a.href = url;
+    a.download = decodeURI(fileName);
+    a.click();
+    window.URL.revokeObjectURL(url);
+  }
+}

src/app/shared/utils/index.ts

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+export * from './date.util';
+export * from './file.util';
+export * from './processSingleSort.func';
+export * from './yuan';

src/app/shared/utils/processSingleSort.func.ts

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+/*
+ * @Author: Maple
+ * @Date: 2021-02-27 17:40:54
+ * @LastEditors: Do not edit
+ * @LastEditTime: 2021-03-23 20:58:18
+ * @Description: 处理ST表格的单列排序
+ */
+import { STRequestOptions } from '@delon/abc/st';
+
+/**
+ * 处理ST表格单条件排序
+ * @param reqOtions ST的Req
+ * @param sortField 排序字段，默认为：sortType
+ * @returns ST的Req
+ */
+export function processSingleSort(reqOtions: STRequestOptions, sortField: string = 'sort'): STRequestOptions {
+  if (!reqOtions.body) {
+    return reqOtions;
+  }
+  // 获取排序字段
+  const body: any = {};
+  for (const _key of Object.keys(reqOtions.body)) {
+    if (typeof reqOtions.body[_key] === 'string') {
+      const value: string = reqOtions.body[_key]?.trim();
+      if (value && (value === 'ascend' || value === 'descend')) {
+        body[sortField] = `${_key}.${value}`;
+      } else {
+        body[_key] = reqOtions.body[_key];
+      }
+    } else {
+      body[_key] = reqOtions.body[_key];
+    }
+  }
+  if (JSON.stringify(body) !== '{}') {
+    reqOtions.body = body;
+  }
+  return reqOtions;
+}

src/app/shared/utils/yuan.ts

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+/**
+ * 转化成RMB元字符串
+ *
+ * @param digits 当数字类型时，允许指定小数点后数字的个数，默认2位小数
+ */
+export function yuan(value: number | string, digits: number = 2): string {
+  if (typeof value === 'number') {
+    value = value.toFixed(digits);
+  }
+  return `&yen ${value}`;
+}