一款查询天气的WebApp

一、WebApp介绍

1.初始界面

2.搜索结果页面

二、项目代码

1.项目目录

--------app

----------app.component.ts

----------app.component.css

----------app.component.html

----------app.module.ts

2.app.component.html

<div class="content">
	<div>
		<img width="300" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg==">
	</div>
	<h2>{{title}}</h2>
	<div>
		<form class="form-inline">
		  <div class="form-group">
		    <label for="exampleInput">Address</label>
		    <input type="text" class="form-control" id="exampleInput" placeholder="Please input the address" name="searchAddress">
		  </div>
		  <button type="button" class="btn btn-default" (click)="start()">Search</button>
		</form>
	</div>
</div>
<div class="data" *ngIf="begin">
	<table class="table table-striped">
		<thead>
			<tr>
				<th>日期</th>
				<th>天气</th>
				<th>日间温度</th>
				<th>夜间温度</th>
				<th>气压值</th>
				<th>湿度</th>
				<th>天气情况</th>
			</tr>
		</thead>
		<tbody>
			<tr *ngFor="let DL of DataList;let i=index;">
				<td>{{dateString[i]}}</td>
				<td>{{DL.weather[0].main}}</td>
				<td>{{DL.temp.day}}</td>
				<td>{{DL.temp.night}}</td>
				<td>{{DL.pressure}}</td>
				<td>{{DL.humidity}}</td>
				<td><img src="http://openweathermap.org/img/w/{{DL.weather[0].icon}}.png"/></td>
			</tr>
		</tbody>
	</table>
</div>

3.app.component.ts

import { Component, OnInit } from '@angular/core';
import {HttpClient} from '@angular/common/http';
import 'rxjs/add/operator/toPromise';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent{ 
    title = 'A weather search App!';
    public http;
    Data:any;
    begin=false;//控制天气结果列表是否出现
    searchAddress:string;//查询框文本的变量声明
    dateString:string[];//天气结果列表的七个日期数组声明
    DataList:any;//获取到的数据列表变量声明
    constructor(private Http:HttpClient) {
        this.http = Http;
    }
    now=new Date()//获取当前时间
    GetDateStr(AddDayCount :number) {
        this.now.setDate(this.now.getDate()+AddDayCount);//获取AddDayCount天后的日期
        let y = this.now.getFullYear();
        let m = this.now.getMonth()+1;//获取当前月份的日期
        let d = this.now.getDate();
        return y+"年"+m+"月"+d+"日";
    }
    ngOnInit() {//在组件加载进来的时候就执行
        this.dateString=[this.GetDateStr(0),this.GetDateStr(1),this.GetDateStr(2),this.GetDateStr(3),this.GetDateStr(4),this.GetDateStr(5),this.GetDateStr(6)]
    }
    start(){//点击查询之后执行的函数
        this.searchAddress = (document.getElementsByName('searchAddress')[0] as HTMLInputElement).value;//获取搜索框里面的文本
        if(this.searchAddress.length!=0){//如果搜索框里面的文本不为空，那么结果列表出现，并且发送请求
            this.begin=true;    
            this.http.get("http://api.openweathermap.org/data/2.5/forecast/daily?q="+this.searchAddress+"&mode=json&units=metric&cnt=7&appid=f12159c1f548ea9ab7b5ff1907b1df50")
                .subscribe((data) => {
                    this.Data=data;
                    this.DataList=this.Data.list;  
                },
                err => { });
        }else{//如果搜索框里面的文本为空，那么结果列表不出现，并且不发送请求
            alert("请输入地址");
        }   
    } 
}

4.app.component.css

.content{
	width: 340px;
	margin: 0 auto;
}
.data{
	width: 800px;
	margin: 0 auto;
	margin-top: 10px;
}

ps：项目中的数据接口亲测可用，大家可以玩玩

项目代码地址https://github.com/Nangxif/WeatherWebApp