Java implements the function of sending weather (with code)

##Java implements the function of sending weather (with code)

Unconsciously, it’s the rainy season again. Does your partner often forget to bring an umbrella? At this time, write a program that automatically sends emails regularly to remind her to bring an umbrella. Will she admire you? Yes, of course, if your target is a siege lion, I didn’t mention it~

##Technology stack
Spring Boot 2.3.1

Jdk 1.8

Maven

Quickly create an instance

Go to https://start.spring.io/ as shown below

ClickGENERATE
Produce a zip to unzip and importideaThat is Can

pom.xml file

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.github.ekko</groupId>
    <artifactId>springboot-email</artifactId>
    <version>1.0.0</version>
    <name>springboot-email</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>4.6.1</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.70</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <!--阿里云主仓库，代理了maven central和jcenter仓库-->
        <repository>
            <id>aliyun</id>
            <name>aliyun</name>
            <url>https://maven.aliyun.com/repository/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <!--阿里云代理Spring 官方仓库-->
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://maven.aliyun.com/repository/spring</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <!--阿里云代理Spring 插件仓库-->
        <pluginRepository>
            <id>spring-plugin</id>
            <name>spring-plugin</name>
            <url>https://maven.aliyun.com/repository/spring-plugin</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories></project>

Create a new entity that receives the weather api

Weather.java

package com.github.ekko.springtools.model;import lombok.Data;import lombok.NoArgsConstructor;import java.util.List;@Data@NoArgsConstructorpublic class Weather {
    private String day;
    private String date;
    private String week;
    //天气情况
    private String wea;
    private String weaImg;
    private String air;
    private String humidity;
    // 空气质量 优
    private String airLevel;
    // 空气质量描述：空气很好，可以外出活动，呼吸新鲜空气，拥抱大自然
    private String airTips;
    private String tem1;
    private String tem2;
    private String tem;

    private List<Whours> hours;}

Whours.java

package com.github.ekko.springtools.model;import lombok.Data;import lombok.NoArgsConstructor;@Data@NoArgsConstructorpublic class Whours {
    // 14日20时
    private String day;
    //中雨
    private String wea;
    //28℃ 实时温度
    private String tem;
    //无持续风向
    private String win;
    // 风速 3-4级
    private String winSpeed;}

Weather interface

uses https://www.tianqiapi.com /index

They didn’t give me a promotion fee either, just as a reward for me having used it for so long

A simple demonstration of the encapsulated weather api

The logic of getting the weather api and sending emails

New

EmailService.javaInterface

package com.github.ekko.springtools.service;import com.github.ekko.springtools.model.Weather;import java.util.List;public interface EmailService {
    boolean sendSimpleMessage();

    List<Weather> getWeather();}

Implement

EmailServiceinterface

package com.github.ekko.springtools.service.impl;import cn.hutool.http.HttpRequest;import cn.hutool.http.HttpUtil;import com.alibaba.fastjson.JSON;import com.github.ekko.springtools.model.Weather;import com.github.ekko.springtools.service.EmailService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.mail.javamail.JavaMailSender;import org.springframework.mail.javamail.MimeMessageHelper;import org.springframework.stereotype.Service;import javax.mail.internet.MimeMessage;import java.util.ArrayList;import java.util.List;import java.util.Optional;@Servicepublic class EmailServiceImpl implements EmailService {
    private final static String FROM_MAIL = "你的发送邮箱，和配置文件中相同";
    private final static String TO_MAIL = "接收人邮箱";
    private final static String APPID = "你申请的天气api的appid，自行替换";
    private final static String APPSECRET = "你申请的天气api的APPSECRET，自行替换";

    public JavaMailSender emailSender;

    @Autowired
    public void setEmailSender(JavaMailSender emailSender) {
        this.emailSender = emailSender;
    }

    @Override
    public boolean sendSimpleMessage() {
        try {
            MimeMessage message = emailSender.createMimeMessage();
            MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(message, true);
            mimeMessageHelper.setTo(TO_MAIL);
            mimeMessageHelper.setFrom(FROM_MAIL);
            mimeMessageHelper.setSubject("今日份天气到了~~");
            mimeMessageHelper.setText(buildHtml(getWeather().get(0)), true);
            emailSender.send(message);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    public List<Weather> getWeather() {
        HttpRequest httpRequest = HttpUtil.createGet("https://www.tianqiapi.com/api?version=v1&" + "appid=" + APPID + "&appsecret=" + APPSECRET + "&cityid=101020100");
        String res = httpRequest.execute().body();
        Object data = JSON.parseObject(res).get("data");

        return JSON.parseArray(JSON.toJSONString(data), Weather.class);
    }

    private String buildHtml(Weather weather) {
        StringBuffer html = new StringBuffer("");
        html.append("<!DOCTYPE html>\n" +
                "<html>\n" +
                "<head>\n" +
                "<meta charset=\"utf-8\">\n" +
                "<title>文档标题</title>\n" +
                "</head><body>");
        if (weather.getWea().contains("雨")) {
            html.append("<h1>今日有雨，狗子请带伞！</h1>");
        }
        html.append("<hr/><h3>今日天气如下</h3><table><tr><th>时间</th><th>天气</th><th>温度</th></tr>");
        Optional.ofNullable(weather.getHours())
                .orElse(new ArrayList<>())
                .forEach(whours -> {
                    html.append("<tr><td>")
                            .append(whours.getDay())
                            .append("</td><td>")
                            .append(whours.getWea())
                            .append("</td><td>")
                            .append(whours.getTem())
                            .append("</td></tr>");
                });

        html.append("</table></body>" +
                "</html>");
        return html.toString();
    }}

APPID and APPSECRET# in the code
##Set up sending account information

Here we take Tencent mailbox as an example, first obtain the authorization code for sending emails

Query the
SMTP address and link of its mailbox, you can see

使用SSL的通用配置如下：
接收邮件服务器：pop.qq.com，使用SSL，端口号995
发送邮件服务器：smtp.qq.com，使用SSL，端口号465或587
账户名：您的QQ邮箱账户名（如果您是VIP帐号或Foxmail帐号，账户名需要填写完整的邮件地址）
密码：您的QQ邮箱密码
电子邮件地址：您的QQ邮箱的完整邮件地址

Configuration application.properties

server.port=9090
server.servlet.context-path=/mail
spring.mail.host=smtp.qq.com
spring.mail.port=465
spring.mail.username=你的邮箱地址
spring.mail.password=刚刚获取的授权码
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.ssl.enable=true
spring.mail.properties.mail.smtp.starttls.enable=true

Control layer

Statement@EnableScheduling

Scheduled task

Set the time expression for the specified method@Scheduled(cron = "0 0 8 * * ? ")

package com.github.ekko.springtools.controller;import com.github.ekko.springtools.model.Weather;import com.github.ekko.springtools.service.EmailService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.scheduling.annotation.EnableScheduling;import org.springframework.scheduling.annotation.Scheduled;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController@EnableSchedulingpublic class MailController {

    private EmailService emailService;

    @Autowired
    public void setEmailService(EmailService emailService) {
        this.emailService = emailService;
    }

    @GetMapping("/send")
    @Scheduled(cron = "0 0 23 * * ? ")
    public boolean sendEmail() {
        return emailService.sendSimpleMessage();
    }

    @GetMapping("get-weather")
    public List<Weather> getWeather() {
        return emailService.getWeather();
    }}

Startup class

Start directlySpringbootEmailApplication

package com.github.ekko.springtools;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class SpringbootEmailApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringbootEmailApplication.class, args);
	}}

Effect

It’s a bit ugly, just use it and beautify it yourself

java video tutorial

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