微信小程序实现天气预报功能(附源码)

前言

最近在学小程序开发,刚好学到天气预报功能的制作,于是给大家分享下。

效果图

天气API获取

这里我用的是和风天气的API，打开官网注册或者登陆你的账号

进入控制台,新建应用

这是刚刚我们创建好的应用，点击添加KEY

选择WebAPI

这注册好我们的API了

微信小程序后台域名配置

登陆小程序后台，分别点击开发和开发设置

点击修改，将我们API的域名添加到request合法域名里面https://free-api.heweather.net

页面代码

.wxml

<view class="header">
 <view class="top">
 <view class="city">
  {{city}}
 </view>
 <view class="search">
  <input placeholder="输入城市名" bindinput="bindKeyInput" placeholder-style="color:white"></input>
  <view class="bt_search" bindtap="search">
  <icon type="search" size="18" color="white"></icon>
  </view>
 </view>
 </view>

 <view class="center">
 <view class="tmp">
  {{tmp}}°
 </view>
 <image mode="widthFix" class="cond-image" src="https://moyv.top/wechat/images/weather/{{imgsrc}}.png">
 </image>
 </view>
 <view class="bottom">
 <view>{{wind_dir}} {{wind_sc}}级</view>
 <view>湿度 {{hum}}%</view>
 <view>气压 {{pres}}Pa</view>
 </view>
</view>
<view class="container">
 <view class="hourly_title">24小时预报</view>
 <scroll-view scroll-x="true" class="hourly">
 <view class="h_item" wx:for="{{hourly}}" wx:key="index">
  <text class="h_time">{{item.time}}</text>
  <view class="h_img">
  <image mode="widthFix" src="https://moyv.top/wechat/images/weather/{{item.imgsrc}}.png"></image>
  </view>
  <text class="h_tmp">{{item.tmp}}°</text>
  <text class="h_wind_dir">{{item.wind_dir}}</text>
  <text class="h_wind_sc">{{item.wind_sc}}级</text>
 </view>

 </scroll-view>
 <view class="hourly_title">7天预报</view>
 <scroll-view scroll-x="true" class="daily">
 <view class="d_item" wx:for="{{daily_forecast}}" wx:key="index">
  <text class="d_txt">{{item.d_txt}}</text>
  <text class="d_date">{{item.d_date}}</text>
  <view class="h_img">
  <image mode="widthFix" src="https://moyv.top/wechat/images/weather/{{item.imgsrc_d}}.png"></image>
  </view>
  <text class="h_tmp">{{item.tmp_min}}°~{{item.tmp_max}}°</text>
  <view class="h_img">
  <image mode="widthFix" src="https://moyv.top/wechat/images/weather/{{item.imgsrc_n}}.png"></image>
  </view>
  <text class="d_wind_dir">{{item.wind_dir}}</text>
  <text class="d_wind_sc">{{item.wind_sc}}级</text>
 </view>

 </scroll-view>
</view>

<view class="footer">
-天气数据来自和风天气api-
</view>

.wxss

page {
 background-color: #f6f6f6;
}

.header {
 background-color:#64c8fa; 
 /* background-image: linear-gradient(to right, #64a0f8, #64c8fa); */
 height: 450rpx;
 padding-top: 32rpx;
 text-align: center;
}

.top {
 display: flex;
 justify-content: space-between;
 align-content: center;
 align-items: center;
}

.city {
 text-align: center;
 color: white;
 display: inline-block;
 font-size: 52rpx;
 margin-left: 32rpx;
}

.search {
 margin-right: 32rpx;
 border-radius: 8rpx;
 display: inline-flex;
 justify-content: center;
 align-content: center;
 align-items: center;
 background-color: rgba(0, 0, 0, 0.1);
 height: 70rpx;
}

.search input {
 width: 200rpx;
 padding: 18rpx 32rpx;
 text-align: left;
 color: white;
 display: inline-block;
}

.bt_search {
 border-radius: 0 8rpx 8rpx 0;
 height: 100%;
 background-color: rgba(0, 0, 0, 0.1);
 display: inline-flex;
 justify-content: center;
 align-content: center;
 align-items: center;
}

.bt_search icon {
 margin: 8rpx 18rpx;
}

.center {
 display: flex;
 justify-content: space-between;
 align-content: center;
 align-items: center;
}

.tmp {
 margin-left: 18rpx;
 display: inline-block;
 font-size: 180rpx;
 color: white;
}
.cond-image{
 width: 200rpx;
 margin-right: 32rpx;
 margin-top: 32rpx;
}
.bottom{
 display: flex;
 justify-content: space-between;
 align-content: center;
 align-items: center;
}
.bottom view{
 color: white;
 margin: 32rpx;
}

.hourly_title{
 font-weight: bold;
 font-size: 42rpx;
 padding: 18rpx 32rpx;
}
.hourly {
 width: 718rpx;
 margin: 0 18rpx;
 border-radius: 18rpx;
 box-shadow: 0.1rem 0.1rem 0.5rem rgba(0, 0, 0, 0.15);
 white-space: nowrap;
 background-color: white;
}
.h_item {
 margin: 18rpx 0;
 display: inline-block;
 width: 143.5rpx;
 text-align: center;
 font-size: 28rpx;
}

.h_img {
 margin: 64rpx 0;
}

.h_img image {
 width: 60rpx;
}

.h_item text {
 display: block;
}

.h_time {
 color: gray;
}

.h_wind_dir {
 margin-top: 32rpx;
}

.h_wind_sc {
 color: gray;
}

.h_tmp {
 color: #027aff;
}

.daily {
 width: 718rpx;
 white-space: nowrap;
 margin: 0 18rpx;
 background-color: white;
 border-radius: 18rpx;
 box-shadow: 0.1rem 0.1rem 0.5rem rgba(0, 0, 0, 0.15);
}

.d_item {
 
 margin: 18rpx 0;
 display: inline-block;
 width: 179.5rpx;
 text-align: center;
 font-size: 28rpx;
}

.d_item text {
 display: block;
}

.d_date {
 color: gray;
}

.d_wind_dir {
 margin-top: 32rpx;
}

.d_wind_sc {
 color: gray;
}

.footer{
 font-size: 28rpx;
 color: gray;
 text-align: center;
 margin-top: 50rpx;
 margin-bottom: 18rpx;
}

.js

Page({

 /**
 * 页面的初始数据
 */
 data: {
 search_city: '',
 imgsrc:100
 },
 /**
 * 根据城市获取天气预报
 */
 getWeather(city) {
 let that = this
 //获取实况天气
 wx.request({
  url: 'https://free-api.heweather.net/s6/weather/now?key=你后台的key&location=' + city,
  success: function(res) {
  if (res.data.HeWeather6[0].status == 'unknown location') {
   wx.showToast({
   title: '抱歉！没有该城市的天气预报',
   icon: 'none',
   duration: 2000
   })
   return;
  }
  console.log(res)
  that.setData({
   city: city,
   tmp: res.data.HeWeather6[0].now.tmp,
   imgsrc: res.data.HeWeather6[0].now.cond_code,
   wind_dir: res.data.HeWeather6[0].now.wind_dir,
   wind_sc: res.data.HeWeather6[0].now.wind_sc,
   hum: res.data.HeWeather6[0].now.hum,
   pres: res.data.HeWeather6[0].now.pres
  })

  //获取24小时天气预报
  wx.request({
   url: 'https://free-api.heweather.net/s6/weather/hourly?key=你后台的key&location=' + city,
   success: function(res) {
   var arr = res.data.HeWeather6[0].hourly
   var hourly = []
   for (var i = 0; i < arr.length; i++) {
    hourly[i] = {
    "imgsrc": arr[i].cond_code,
    "tmp": arr[i].tmp,
    "time": arr[i].time.substring(11),
    "wind_dir": arr[i].wind_dir,
    "wind_sc": arr[i].wind_sc
    }
   }
   that.setData({
    hourly: hourly
   })

   var weekArray = new Array("周日", "周一", "周二", "周三", "周四", "周五", "周六");
   //获取未来7天天气预报
   wx.request({
    url: 'https://free-api.heweather.net/s6/weather/forecast?key=你后台的key&location=' + city,
    success: function(result) {
    //console.log(result)
    var arr = result.data.HeWeather6[0].daily_forecast
    var daily_forecast = []
    for (var i = 0; i < arr.length; i++) {
     daily_forecast[i] = {
     d_txt: i == 0 ? "今天" : weekArray[new Date(arr[i].date).getDay()],
     d_date: arr[i].date.substring(5),
     imgsrc_d: arr[i].cond_code_d,
     imgsrc_n: arr[i].cond_code_n,
     wind_dir: arr[i].wind_dir,
     wind_sc: arr[i].wind_sc,
     tmp_max: arr[i].tmp_max,
     tmp_min: arr[i].tmp_min,
     cond_txt_d: arr[i].cond_txt_d
     }
    }
    that.setData({
     daily_forecast: daily_forecast
    })
    }
   })

   }
  })

  }
 })
 },
 bindKeyInput(e) {
 this.setData({
  search_city: e.detail.value
 })
 },
 search() {
 this.getWeather(this.data.search_city)
 },
 /**
 * 生命周期函数--监听页面加载
 */
 onLoad: function(options) {
 this.getWeather("广州")
 },
})

.json

{
 "usingComponents": {},
 "navigationBarTitleText": "天气预报"
}

注意问题（必看）

由于我的项目有用到天气预报的逐小时预报和7天预报，和风天气又必须实名才能获取到此数据，所以请登录和风天气后台进行实名认证

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