angular版聊天室|仿微信界面IM聊天|NG2+Node聊天实例

来源：cnblogs　　作者：xiaoyan2017　　时间：2019/7/17 10:51:10　　对本文有异议

一、项目介绍

运用angular+angular-cli+angular-router+ngrx/store+rxjs+webpack+node+wcPop等技术实现开发的仿微信angular版聊天室angular-chatroom实例项目，实现了下拉刷新、聊天消息右键菜单、发送消息、表情(动图)，图片、视频预览，红包打赏等功能。

二、技术实现

MVVM框架：angular8.0 / @angular/cli
状态管理：@ngrx/store / rxjs
地址路由：@angular/router
弹窗组件：wcPop
打包工具：webpack 2.0
环境配置：node.js + cnpm
图片预览：previewImage
轮播滑动：swiper

{
  "name": "angular-chatroom",
  "contact": "QQ：282310962 、 wx：xy190310",
  "dependencies": {
    "@angular/animations": "~8.0.1",
    "@angular/common": "~8.0.1",
    "@angular/compiler": "~8.0.1",
    "@angular/core": "~8.0.1",
    "@angular/forms": "~8.0.1",
    "@angular/platform-browser": "~8.0.1",
    "@angular/platform-browser-dynamic": "~8.0.1",
    "@angular/router": "~8.0.1",
    "rxjs": "~6.4.0",
    "tslib": "^1.9.0",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.800.0",
    "@angular/cli": "~8.0.3",
    "@angular/compiler-cli": "~8.0.1",
    "@angular/language-service": "~8.0.1",
    "@ngrx/store": "^8.0.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "@types/swiper": "^4.4.3",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "jquery": "^2.2.3",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "swiper": "^4.5.0",
    "typescript": "~3.4.3"
  }
}

◆ App主页面模板、app-routing路由地址配置

<div class="weChatIM__panel clearfix">
    <div class="we__chatIM-wrapper flexbox flex__direction-column">
        <!-- 顶部 -->
        <header-bar></header-bar>
        
        <!-- 主页面 -->
        <div class="wcim__container flex1">
            <router-outlet></router-outlet>
        </div>
 
        <!-- 底部 -->
        <tab-bar></tab-bar>
    </div>
</div>

/*
 *  angular/router路由配置
 */
import { NgModule } from '@angular/core'
import { Routes, RouterModule } from '@angular/router'
 
// 引入路由验证
import { Auth } from '../views/auth/auth'
 
// 引入页面组件
import { NotFoundComponent } from '../components/404'
import { LoginComponent } from '../views/auth/login'
import { RegisterComponent } from '../views/auth/register'
import { IndexComponent } from '../views/index'
import { ContactComponent } from '../views/contact'
import { UinfoComponent } from '../views/contact/uinfo'
import { UcenterComponent } from '../views/ucenter'
import { GroupChatComponent } from '../views/chat/group-chat'
import { GroupInfoComponent } from '../views/chat/group-info'
import { SingleChatComponent } from '../views/chat/single-chat'
export const routes: Routes = [
  {
    path: '', redirectTo: 'index', pathMatch: 'full',
    data: { showHeader: true, showTabBar: true },
  },
  // 登录、注册
  {
    path: 'login', component: LoginComponent,
  },
  {
    path: 'register', component: RegisterComponent,
  },
  // 首页、联系人、我
  {
    path: 'index', component: IndexComponent, canActivate: [Auth],
    data: { showHeader: true, showTabBar: true },
  },
  {
    path: 'contact', component: ContactComponent, canActivate: [Auth],
    data: { showHeader: true, showTabBar: true },
  },
  {
    path: 'contact/uinfo', component: UinfoComponent
  },
  {
    path: 'ucenter', component: UcenterComponent, canActivate: [Auth],
    data: { showHeader: false, showTabBar: true },
  },
  // 聊天页面
  {
    path: 'chat/group-chat', component: GroupChatComponent, canActivate: [Auth]
  },
  {
    path: 'chat/single-chat', component: SingleChatComponent, canActivate: [Auth]
  },
  {
    path: 'chat/group-info', component: GroupInfoComponent, canActivate: [Auth]
  },
  // 404
  {
    path: '**', component: NotFoundComponent,
  },
  // ...
];
@NgModule({
  // imports: [RouterModule.forRoot(routes)],
  imports: [RouterModule.forRoot(routes, { useHash: true })],  //开启hash模式
  exports: [RouterModule],
  providers: [Auth]
})
export class AppRoutingModule {}

◆ angular + ngrx/store页面状态管理

◆ angular登录、注册验证

export class LoginComponent implements OnInit {
    private formField = {
        tel: '',
        pwd: ''
    }
    
    private auth: any
    constructor(
        private router: Router,
        private store: Store<{}>
    ) {
        let that = this
        this.store.select('auth').subscribe(v => {
            console.log(v)
            that.auth = v;
        })
    }
    ngOnInit(): void {
        if(this.auth.token){
            this.router.navigate(['/index'])
        }
    }
    handleSubmit(){
        let that = this
 
        if(!this.formField.tel){
            wcPop({ content: '手机号不能为空！', style: 'background:#eb5a5c;color:#fff;', time: 2 });
        }else if(!checkTel(this.formField.tel)){
            wcPop({ content: '手机号格式不正确！', style: 'background:#eb5a5c;color:#fff;', time: 2 });
        }else if(!this.formField.pwd){
            wcPop({ content: '密码不能为空！', style: 'background:#eb5a5c;color:#fff;', time: 2 });
        }else{
            this.store.dispatch(new actions.setToken(getToken(64)))
            this.store.dispatch(new actions.setUser(this.formField.tel))
            wcPop({
                content: '登录成功，跳转中...', style: 'background:#378fe7;color:#fff;', time: 2, shadeClose: false,
                end: function () {
                    that.router.navigate(['/index'])
                }
            });
        }
    }
}

◆ 编辑器核心消息处理

function surrounds() {
    setTimeout(function () { //chrome
        var sel = window.getSelection();
        var anchorNode = sel.anchorNode;
        if (!anchorNode) return;
        if (sel.anchorNode === $(".J__wcEditor")[0] ||
            (sel.anchorNode.nodeType === 3 && sel.anchorNode.parentNode === $(".J__wcEditor")[0])) {
            var range = sel.getRangeAt(0);
            var p = document.createElement("p");
            range.surroundContents(p);
            range.selectNodeContents(p);
            range.insertNode(document.createElement("br")); //chrome
            sel.collapse(p, 0);
            (function clearBr() {
                var elems = [].slice.call($(".J__wcEditor")[0].children);
                for (var i = 0, len = elems.length; i < len; i++) {
                    var el = elems[i];
                    if (el.tagName.toLowerCase() == "br") {
                        $(".J__wcEditor")[0].removeChild(el);
                    }
                }
                elems.length = 0;
            })();
        }
    }, 10);
}
// 定义最后光标位置
var _lastRange = null, _sel = window.getSelection && window.getSelection();
var _rng = {
    getRange: function () {
        if (_sel && _sel.rangeCount > 0) {
            return _sel.getRangeAt(0);
        }
    },
    addRange: function () {
        if (_lastRange) {
            _sel.removeAllRanges();
            _sel.addRange(_lastRange);
        }
    }
}
// 消息处理
function isEmpty() {
    // var html = $editor.html();
    var html = $(".J__wcEditor").html();
    html = html.replace(/<br[\s\/]{0,2}>/ig, "\r\n");
    html = html.replace(/<[^img].*?>/ig, "");
    html = html.replace(/&nbsp;/ig, "");
    return html.replace(/\r\n|\n|\r/, "").replace(/(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, "") == "";
}