Spring Boot是由Pivotal团队提供的全新框架，其设计目的是用来简化新Spring应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置，从而使开发人员不再需要定义样板化的配置。

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Spring Boot

可以在Spring仓库中手动下载和安装。一种更为简便的方式是使用Groovy环境管理器（Groovy enVironment Manager，GVM），它会处理Boot版本的安装和管理。Boot及其CLI可以通过GVM的命令行gvm install springboot进行安装。在OS X上安装Boot可以使用Homebrew包管理器。为了完成安装，首先要使用brew tap pivotal/tap切换到Pivotal仓库中，然后执行brew install springboot命令。

快速创建实例

点击GENERATE生产一个zip解压导入idea即可

pom.xml 文件

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.3.1.RELEASE
        
    
    com.github.ekko
    springboot-email
    1.0.0
    springboot-email
    Demo project for Spring Boot

    
        1.8
    

    
        
            org.springframework.boot
            spring-boot-starter-mail
        
        
            cn.hutool
            hutool-all
            4.6.1
        
        
            com.alibaba
            fastjson
            1.2.70
        
        
            org.projectlombok
            lombok
            1.18.12
            provided
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
            
                
                    org.junit.vintage
                    junit-vintage-engine
                
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    
    
        
        
            aliyun
            aliyun
            https://maven.aliyun.com/repository/public
            
                true
            
            
                false
            
        
        
        
            spring-milestones
            Spring Milestones
            https://maven.aliyun.com/repository/spring
            
                true
            
            
                false
            
        
    
    
        
        
            spring-plugin
            spring-plugin
            https://maven.aliyun.com/repository/spring-plugin
            
                true
            
            
                false
            
        
    

新建接收天气api的实体

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 hours;}

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;}

天气接口

也没给我推广费，也作为我白嫖它这么久的回报吧

封装的天气api简单演示

获取天气api与发送邮件的逻辑

EmailService.java接口

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

    List getWeather();}

EmailService接口

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 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("\n" +
                "\n" +
                "\n" +
                "\n" +
                "\n" +
                "");
        if (weather.getWea().contains("雨")) {
            html.append("
今日有雨，狗子请带伞！
");
        }
        html.append("
今日天气如下
");
        Optional.ofNullable(weather.getHours())
                .orElse(new ArrayList<>())
                .forEach(whours -> {
                    html.append("");
                });

        html.append("
时间
天气
温度
")
                            .append(whours.getDay())
                            .append("
")
                            .append(whours.getWea())
                            .append("
")
                            .append(whours.getTem())
                            .append("
" +
                "");
        return html.toString();
    }}

APPID与APPSECRET

设置发送账号信息

查询其邮箱的SMTP地址 ，链接 ,可以看到

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

配置appliction.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

控制层

@EnableScheduling定时任务
给指定方法设置时间表达式@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 getWeather() {
        return emailService.getWeather();
    }}

启动类

SpringbootEmailApplication即可

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);
	}}

效果

新闻名称：Java实现定时发送天气预报-创新互联
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