51工具盒子前言 {#前言}
今年自五月份以来发生了许多事情，其中一个显著的变化是我购买了一辆车。刚开始觉得购车挺便捷的，然而提车的第一个月油费竟然直逼
1300元，让我对这部分开支感到有些心疼。因此，我决定开发一个油价推送小程序，以便获取当前所在城市油价的实时变化情况。通过这个小程序，我可以方便地了解油价的走势，从而更好地掌握预算。为了使这个小程序更加实用，我将项目上传到了GitHub，并且利用Actions定时在每天下午4点半自动推送油价变化。以下是我实现这一想法的具体思路。
获取源数据 {#获取源数据}
在网上找到一个油价网站，http://www.qiyoujiage.com , 定位到自己所在的具体地址，例如：http://www.qiyoujiage.com/hubei/xxx.shtml ，通过 jsoup 抓取关键数据，如 92#-0# 汽油价格等其他自己需要的数据。
项目开始 {#项目开始}
创建一个普通 maven 项目，依赖如下：
<properties>
<maven.compiler.source>21</maven.compiler.source>
<maven.compiler.target>21</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<hutool-all.version>5.8.23</hutool-all.version>
<jsoup.version>1.16.1</jsoup.version>
<thymeleaf.version>3.1.2.RELEASE</thymeleaf.version>
<javax.mail-api.version>1.6.2</javax.mail-api.version>
</properties>
<dependencies>`
`<!-- 工具类 -->`
`<dependency>`
`<groupId>`cn.hutool`</groupId>`
`<artifactId>`hutool-all`</artifactId>`
`<version>`${hutool-all.version}`</version>`
`</dependency>`
`<!-- 爬虫框架 -->`
`<dependency>`
`<groupId>`org.jsoup`</groupId>`
`<artifactId>`jsoup`</artifactId>`
`<version>`${jsoup.version}`</version>`
`</dependency>`
`<!-- 邮件模板 -->`
`<dependency>`
`<groupId>`org.thymeleaf`</groupId>`
`<artifactId>`thymeleaf`</artifactId>`
`<version>`${thymeleaf.version}`</version>`
`</dependency>`
`<dependency>`
`<groupId>`javax.mail`</groupId>`
`<artifactId>`javax.mail-api`</artifactId>`
`<version>`${javax.mail-api.version}`</version>`
`</dependency>`
`<!-- Java Mail -->`
`<dependency>`
`<groupId>`com.sun.mail`</groupId>`
`<artifactId>`javax.mail`</artifactId>`
`<version>`${javax.mail-api.version}`</version>`
`</dependency>`
`</dependencies>
JDK 版本尽量保持一致，毕竟 SpringBoot 3.0 所要求的 JDK 版本最低都是 Java17 了，抱着 Java8 养老都不够用了。
具体的功能实现 {#具体的功能实现}
package com.mobaijun.oil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.io.resource.ClassPathResource;
import cn.hutool.extra.mail.MailAccount;
import cn.hutool.extra.mail.MailUtil;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
`
`
*
Description: [油价解析]
*
Author: [mobaijun]
*
Date: [2023/12/2 19:09]
* `
`IntelliJ IDEA Version: [IntelliJ IDEA 2023.1.4]
*/
public class OilParse {
`
`
/**
`
`
* 日志打印
*/
private static final Log log = LogFactory.get(OilParse.class);
`
`
/**
`
`
* 爬取地址
*/
private static final String START_URL = "http://www.qiyoujiage.com/hubei/shiyan.shtml";
`
`
/**
`
`
* 汽油说明
*/
private static final String DE_SCRIPT_GASOLINE_MODEL = """
92 汽油的平均密度为 0.725kg/L，一升 92 号汽油为 0.725 千克;
95 号汽油的密度为 0.737g/ml，一升 95 号汽油为 0.737 千克;
0 号柴油的密度在 0.8400--0.8600g/cm⒊之间，一升 0# 柴油大约是 0.84 千克;""";
`
`
/**
`
`
* 邮件发送
*
* @param args 参数
*/
public static void main(String[] args) {
String oilPriceEmail = generateOilPriceEmail(parseOilData());
MailAccount account = createMailAccount();
sendMail(account, oilPriceEmail);
}
`
`
private static Map<String, String> parseOilData() {
Map<String, String> oilMap = new LinkedHashMap<>();
try {
Document document = Jsoup.connect(OilParse.START_URL).timeout(3000).get();
String you = Objects.requireNonNull(document.getElementById("youjia")).text();
oilMap.putAll(splitData(you));
} catch (IOException e) {
log.error("HTML parsing failed, please try again! error message:{}", e.getMessage());
}
return oilMap;
}
`
`
private static Map<String, String> splitData(String inputData) {
Map<String, String> keyValuePairs = new LinkedHashMap<>();
Pattern pattern = Pattern.compile("(\S+)\s(\S+)");
Matcher matcher = pattern.matcher(inputData);
while (matcher.find()) {
String key = matcher.group(1);
String value = matcher.group(2);
keyValuePairs.put(key, value);
}
return keyValuePairs;
}
`
`
private static MailAccount createMailAccount() {
MailAccount account = new MailAccount();
account.setHost("smtp.163.com");
account.setPort(465);
account.setUser("mobaijun8@163.com");
account.setPass("你的邮箱授权密码 - 具体可 Google");
account.setFrom("mobaijun8@163.com");
account.setCharset(StandardCharsets.UTF_8);
account.setStarttlsEnable(false);
account.setSslEnable(true);
return account;
}
`
`
private static void sendMail(MailAccount account, String oilPriceEmail) {
try {
MailUtil.send(account, "mobaijun8@163.com", "湖北今日油价", oilPriceEmail, true);
log.info("邮件发送成功！");
} catch (Exception e) {
log.error("邮件发送失败：" + e.getMessage());
}
}
`
`
private static String generateOilPriceEmail(Map<String, String> oilData) {
// 读取 Thymeleaf 模板
String template = readTemplate();
// 使用 Thymeleaf 引擎进行数据填充
TemplateEngine templateEngine = new TemplateEngine();
Context context = new Context();
context.setVariable("title", "湖北今日油价");
context.setVariable("subTitle", "每日即时更新 单位: 元 / 升");
context.setVariable("oilData", oilData);
context.setVariable("oilDeScript", DE_SCRIPT_GASOLINE_MODEL);
return templateEngine.process(template, context);
}
`
`
/**
`
``
`
* 读取 Template
*
* `@return 内容
*/``
`private` `static` `String` `readTemplate()` `{`
`try` `(InputStream` inputStream `=` `new` `ClassPathResource("oil_price_template.html").getStream())` `{`
`return` `IoUtil.read(`inputStream`,` `StandardCharsets.UTF_8);`
`}` `catch` `(IOException` e`)` `{`
log`.error("模板文件读取失败：{}"` `+` e`.getMessage());`
`return` `"";`
`}`
`}`
`}
新建邮件模板 {#新建邮件模板}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta content="width=device-width, initial-scale=1.0" name="viewport">
<style>
body {
background-image: url('https://tencent.cos.mobaijun.com/img/icon/background.jpg');
background-size: cover;
/* 使用深色背景 */
background-color: #333;
/* 将文字颜色改为黑色 */
color: #000; /* 黑色 */
font-family: Arial, sans-serif;
}
<span class="token selector">h1</span> <span class="token punctuation">{</span>
<span class="token property">text-align</span><span class="token punctuation">:</span> center<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token selector">table</span> <span class="token punctuation">{</span>
<span class="token property">width</span><span class="token punctuation">:</span> 100%<span class="token punctuation">;</span>
<span class="token property">border-collapse</span><span class="token punctuation">:</span> collapse<span class="token punctuation">;</span>
<span class="token property">margin</span><span class="token punctuation">:</span> 20px 0<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token selector">th, td</span> <span class="token punctuation">{</span>
<span class="token property">border</span><span class="token punctuation">:</span> 1px solid #54d1d5<span class="token punctuation">;</span>
<span class="token property">padding</span><span class="token punctuation">:</span> 8px<span class="token punctuation">;</span>
<span class="token property">text-align</span><span class="token punctuation">:</span> left<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token selector">th</span> <span class="token punctuation">{</span>
<span class="token property">background-color</span><span class="token punctuation">:</span> #70a0a4<span class="token punctuation">;</span>
<span class="token property">color</span><span class="token punctuation">:</span> #030303<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token selector">p</span> <span class="token punctuation">{</span>
<span class="token property">margin</span><span class="token punctuation">:</span> 20px 0<span class="token punctuation">;</span>
<span class="token property">color</span><span class="token punctuation">:</span> #000<span class="token punctuation">;</span> <span class="token comment">/* 黑色 */</span>
<span class="token punctuation">}</span>
<span class="token selector">h3</span> <span class="token punctuation">{</span>
<span class="token property">text-align</span><span class="token punctuation">:</span> center<span class="token punctuation">;</span>
<span class="token property">color</span><span class="token punctuation">:</span> #000<span class="token punctuation">;</span> <span class="token comment">/* 黑色 */</span>
<span class="token punctuation">}</span>
<span class="token selector">blockquote</span> <span class="token punctuation">{</span>
<span class="token property">text-align</span><span class="token punctuation">:</span> center<span class="token punctuation">;</span>
<span class="token property">color</span><span class="token punctuation">:</span> #000<span class="token punctuation">;</span> <span class="token comment">/* 黑色 */</span>
<span class="token punctuation">}</span>
</span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span>
</head>`
`<body>`
`<h1 th:text="${title}">`湖北今日油价`</h1>`
`<p style="text-align: center;"
th:text="| 当日更新时间: ${#temporals.format(#temporals.createNow().plusHours(8),'yyyy-MM-dd HH:mm:ss')} 单位: 元 / 升 |"></p>`
`<table>`
`<thead>`
`<tr style="background-color: rgba(112, 160, 164, 0.5);">`
`<th>`汽油型号`</th>`
`<th>`油价`</th>`
`</tr>`
`</thead>`
`<tbody>`
`<tr th:each="entry : ${oilData}">`
`<td th:text="${entry.key}">`Type`</td>`
`<td th:text="${entry.value}">`Price`</td>`
`</tr>`
`</tbody>`
`</table>`
`<!-- 型号描述 -->`
`<h3 style="text-align: center; accent-color: #030303;">`汽油型号说明`</h3>`
`<blockquote style="text-align: center;" th:utext="${#vars.oilDeScript.replaceAll(';','</br></br>')}">`汽油型号简介
`</blockquote>`
`</body>`
`</html>
创建 ci.yml 文件 {#创建 -ci-yml- 文件}
name: Run Java Main Method
on:
workflow_dispatch:
schedule:
- cron: '30 8 * * *'
jobs:
run-java-main:
runs-on: ubuntu-latest
<span class="token key atrule">steps</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> Checkout repository
<span class="token key atrule">uses</span><span class="token punctuation">:</span> actions/checkout@v2
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> Set up Java
<span class="token key atrule">uses</span><span class="token punctuation">:</span> actions/setup<span class="token punctuation">-</span>java@v2
<span class="token key atrule">with</span><span class="token punctuation">:</span>
<span class="token key atrule">distribution</span><span class="token punctuation">:</span> <span class="token string">'adopt'</span>
<span class="token key atrule">java-version</span><span class="token punctuation">:</span> <span class="token string">'21'</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> Add execute permission to mvnw
<span class="token key atrule">run</span><span class="token punctuation">:</span> chmod +x mvnw
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> Build with Maven
<span class="token key atrule">run</span><span class="token punctuation">:</span> <span class="token punctuation">|</span><span class="token scalar string">
./mvnw -B package --file ./pom.xml</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> Run Java Main Method
<span class="token key atrule">run</span><span class="token punctuation">:</span> <span class="token punctuation">|</span><span class="token scalar string">
java -jar target/oil-price-push-jar-with-dependencies.jar</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
配置 maven 插件 {#配置 -maven- 插件}
----------------------------
```markup
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>21</source>
<target>21</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.3.0</version>
<configuration>
<archive>
<manifest>
<mainClass>com.mobaijun.oil.OilParse</mainClass>
</manifest>
</archive>
<descriptorRefs>
<!-- 这个 jar-with-dependencies 是 assembly 预先写好的一个，组装描述引用 -->
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<!-- 工程名 -->
<finalName>${project.name}</finalName>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
```
最终效果 {#最终效果}
------------
> 通过以上步骤就完成了一个简单的油价推送小程序，如有什么问题，欢迎在评论区留言，讨论！
>
>
