2022 has officially arrived. There are only ten days left before the Chinese Lunar New Year. Spring Festival couplets are indispensable for the Spring Festival. The following article will look at how to implement the "Smart Spring Festival Couplets" applet for the Spring Festival. I hope it will be helpful to everyone. Helps!

The New Year is approaching, let’s make a smart Spring Festival couplet applet to cheer everyone up! I wish all digging friends a happy new year in 2022 in advance! New Year is coming soon!

1. Effect display

Random Spring Couplets

##Specified last name

Experience addressScan the QR code below on WeChat or WeChat search treasure program

##Source code address

Gitee: https://gitee.com/nanfangzhe/wechat_demo

2. Preparation work

Master the language

:WeChat Mini Program LanguageTechnical Points
: ①WeChat Mini Program Cloud Development ②Baidu AI Intelligent Creation Platform - Intelligent Writing of Spring Festival Couplets3. Game Process and Rules

Game Process

: You can click random Spring Festival Couplets and Specify the last name to get the desired Spring Festival couplets~Explanation of terms
: ①Random Spring Festival couplets, randomly display a pair of Spring Festival couplets. ②Specify surname: Enter your surname to generate a couplet. 4. Deployment steps

1??Register WeChat applet process and start cloud development

2??Register Baidu AI platform——》Console——》Create natural language processing application—— 》Baidu authentication and authorization, get the token——》 Then take the token to the Smart Spring Festival Couplets API interface

3??What needs to be modified: APPID (the APPID entered when opening it with the WeChat developer tool), Baidu token (in the couplet folder index.js file), cloud development environment env (in app.js file)

5. Logic explanation and core code

1 Logic explanation of random Spring Festival coupletsSince the smart Spring Festival couplets API interface provided by Baidu requires parameters to be passed, we can prepare a small data collection in advance, pass the value when clicked, and then return the required couplets. Therefore, we have collected some words and phrases used to welcome the Spring Festival and celebrate the New Year.

var RANDOM_TEXT_LIST = ["虎", "虎年", "迎春", "春節(jié)", "過年", "年獸", "過春節(jié)", "初一", "年初", "紅紅火火", "紅火", "開心", "開開心心", "健康", "健健康康", "長(zhǎng)壽", "平安", "平平安安", "家庭", "家庭和睦", "和睦", "子子孫孫", "勤勞", "福氣", "福", "致富", "富裕", "富", "合家歡喜", "合家", "歡喜", "喜慶", "喜", "囍", "生意興隆", "恭喜發(fā)財(cái)", "大富大貴", "富貴", "富裕", "豐年", "子孫滿堂", "心歡喜", "人間喜", "燈火", "燈籠", "煙花", "爆竹"]

2 Explanation of the logic of specifying the surnameThis is similar to the logic of random Spring Festival couplets, only However, the user is required to enter the last name, but the API interface used is a bit awkward. If only one character of the last name is entered, the output content is a bit unreasonable. So the solution here is to splice and add the word "家". For example, if you enter the surname: Liu, the passed value is the Liu family; if the input is Zhang, it is the Zhang family...

  ok: function () {
    var text = this.data.textV
    if (!text || text.length > 4) {
      wx.showToast({
        title: '姓氏暫不支持超過4個(gè)字哦！',
        icon: 'none'
      })
      return;
    }
    this.getCoupletByTxt(text + "家") // 智能寫對(duì)聯(lián)
    this.setData({
      showModal: false
    })
  },

3 Core CodeAfter the previous logical explanation, you may know that the core code is a publicly called method. (Bingo~ You guessed it)

Method called by random Spring Festival couplets

// 隨機(jī)春聯(lián)的調(diào)用方法
  bindGetRandomCouplet() {
    let that = this
    var num = parseInt(Math.random() * (MAX_NUM - MIN_NUM + 1) + MIN_NUM, 10); // 生成[n,m]的隨機(jī)整數(shù)
    that.getCoupletByTxt(RANDOM_TEXT_LIST[num]) // 智能寫對(duì)聯(lián)
  },

Method called by specified last name

// 隨機(jī)春聯(lián)的調(diào)用方法
  ok: function () {
    var text = this.data.textV
    if (!text || text.length > 4) {
      wx.showToast({
        title: '姓氏暫不支持超過4個(gè)字哦！',
        icon: 'none'
      })
      return;
    }
    this.getCoupletByTxt(text + "家") // 智能寫對(duì)聯(lián)
    this.setData({
      showModal: false
    })
  },

Public methods for calling smart Spring Festival couplets

  // 智能寫對(duì)聯(lián)（API接口來源，參考百度-語言處理技術(shù)-智能創(chuàng)作平臺(tái)-智能寫對(duì)聯(lián)：https://ai.baidu.com/ai-doc/NLP/Ok53wb6dh）
  getCoupletByTxt(text) {
    let that = this
    console.log(text) // 字符串（限5字符數(shù)以內(nèi)）即作詩的主題
    if (!text || text.length > 5) {
      wx.showToast({
        title: '主題限制5個(gè)字以內(nèi)哦！',
        icon: 'none'
      })
      return;
    }
    wx.cloud.callFunction({
      name: 'couplet',
      data: {
        action: 'getCoupletByTxt',
        text
      }
    }).then(res => {
      console.log(res)
      if (res.result.error_code) {
        if ("17".indexOf(res.result.error_code) != -1) {
          wx.showToast({
            title: '調(diào)用次數(shù)用完啦，點(diǎn)擊右下角小電話，聯(lián)系開發(fā)者充次錢充次數(shù)啦！',
            icon: 'none',
            duration: 3000,
          })
        } else {
          wx.showToast({
            title: '當(dāng)前對(duì)聯(lián)不太行，請(qǐng)重試！',
            icon: 'none'
          })
        }
        return;
      }
      that.setData({
        couplets: res.result.couplets
      })
    })
  },

Public methods for calling cloud functions

// 注：先看readme.md文件
// 對(duì)聯(lián)生成請(qǐng)求
const cloud = require('wx-server-sdk')
var rp = require('request-promise')
cloud.init({
  env: cloud.DYNAMIC_CURRENT_ENV
})
const DB = cloud.database()
// 天行數(shù)據(jù)的KEY
var TIAN_XING_KEY = ''
// 天行數(shù)據(jù)的接口API
var TIAN_XING_API = 'http://api.tianapi.com/duilian/index'
// 百度Token
var BAI_DU_ACCESS_TOKEN = '' // 這里需要自行去申請(qǐng)咯~
// 百度接口api
var BAI_DU_API = [
  "https://aip.baidubce.com/rpc/2.0/creation/v1/poem", // 智能寫詩
  "https://aip.baidubce.com/rpc/2.0/creation/v1/couplets" // 智能寫對(duì)聯(lián)
]


// 云函數(shù)入口函數(shù)
exports.main = async (event, context) => {
  var { action, text } = event
  var data = {}
  switch (action) {
    case 'getPoemByTxt': {
      data.text = text
      if (text == "")
        return {
          message: '缺少參數(shù)text'
        }
      // 智能寫詩（API接口來源，參考百度-語言處理技術(shù)-智能創(chuàng)作平臺(tái)-智能寫詩：https://ai.baidu.com/ai-doc/NLP/ak53wc3o3）
      return new Promise((resolve, reject) => {
        try {
          rp({
            method: 'POST',
            headers: {
              "content-type": "application/json",
            },
            body: JSON.stringify(data),
            url: BAI_DU_API[0] + '?access_token=' + BAI_DU_ACCESS_TOKEN, // text必要參數(shù)，寫詩的主題內(nèi)容
          }, function (error, response, body) {
            if (error) {
              return reject(error);
            }
            return resolve(JSON.parse(body));
          })
        } catch (e) {
          return reject(e)
        }
      });
    }
    case 'getCoupletByTxt': {
      data.text = text
      if (text == "")
        return {
          message: '缺少參數(shù)text'
        }
      // 智能寫對(duì)聯(lián)（API接口來源，參考百度-語言處理技術(shù)-智能創(chuàng)作平臺(tái)-智能寫對(duì)聯(lián)：https://ai.baidu.com/ai-doc/NLP/Ok53wb6dh）
      return new Promise((resolve, reject) => {
        try {
          rp({
            method: 'POST',
            headers: {
              "content-type": "application/json",
            },
            body: JSON.stringify(data),
            url: BAI_DU_API[1] + '?access_token=' + BAI_DU_ACCESS_TOKEN,  // text必要參數(shù)，對(duì)聯(lián)的主題內(nèi)容
          }, function (error, response, body) {
            if (error) {
              return reject(error);
            }
            return resolve(JSON.parse(body));
          })
        } catch (e) {
          return reject(e)
        }
      });
    }
    case 'getRandomCouplet': {
      // 隨機(jī)一對(duì)對(duì)聯(lián)（無橫批）（API接口來源，天行數(shù)據(jù)：https://www.tianapi.com/console/）
      return new Promise((resolve, reject) => {
        rp({
          url: TIAN_XING_API + '?key=' + TIAN_XING_KEY,
          method: "POST",
          json: true,
        }, function (error, response, body) {
          console.log("響應(yīng)" + body)
          resolve(body)
          if (!error && response.statusCode == 200) {
            try { } catch (e) {
              reject()
            }
          }
        })
      })
    }
    default: {
      return {
        message: 'action錯(cuò)誤！'
      }
    }
  }

}

(There are some redundant codes in the middle, but they are not redundant. It’s just not sorted out, and this small program is still being developed...)

Full code address: https://gitee.com/nanfangzhe/wechat_demo

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