1.准备环境

2.1 开发工具

IDEA2019  微信开发者工具 PostMan SQLYog

2.2 开发环境

Java+mysql+JavaScript+json

2. 简介

前后端分离，在微信开发者工具中写页面以及跳转，在数据库中写入音乐类型 专辑名称 演唱者 以及音乐的url ，通过Java 将数据库中的数据获取出来封装成 json 通过url进行传值，在前端进行解析展示出来

3.代码

sql:创建数据库 表 插入数据

/*
SQLyog Ultimate v13.1.1 (64 bit)
MySQL - 5.7.29 : Database - wyy_music
*********************************************************************
*//*!40101 SET NAMES utf8 */;/*!40101 SET SQL_MODE=''*/;/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`wyy_music` /*!40100 DEFAULT CHARACTER SET utf8 */;USE `wyy_music`;/*Table structure for table `tb_music` */DROP TABLE IF EXISTS `tb_music`;CREATE TABLE `tb_music` (`music_id` int(11) NOT NULL AUTO_INCREMENT,`music_name` varchar(255) NOT NULL,`music_album_name` varchar(255) NOT NULL,`music_album_picUrl` varchar(255) NOT NULL,`music_mp3Url` varchar(255) NOT NULL,`music_artist_name` varchar(255) NOT NULL,`sheet_id` int(11) DEFAULT NULL,PRIMARY KEY (`music_id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;/*Data for the table `tb_music` */insert  into `tb_music`(`music_id`,`music_name`,`music_album_name`,`music_album_picUrl`,`music_mp3Url`,`music_artist_name`,`sheet_id`) values
(1,'光年之外','光年之外','https://imgessl.kugou.com/stdmusic/20161229/20161229233400375274.jpg','https://webfs.ali.kugou.com/202109271010/183cab94955d96aee0120d1d4677540d/KGTX/CLTX001/f87095bff0de7c636c3a3b8aac702d76.mp3','G.E.M.邓紫棋',1),
(2,'夜空中最亮的星','世界','https://imgessl.kugou.com/stdmusic/20150719/20150719010047203836.jpg','https://webfs.tx.kugou.com/202109271011/8ac45da301d093ccdd58111ad91371eb/G202/M04/1B/13/aocBAF55G0-ADd0HAD2Y88Efqbw072.mp3','逃跑计划',1),
(3,'只要平凡','只要平凡','https://y.qq.com/music/photo_new/T002R300x300M000000K7srf1rZtOX.jpg?max_age=2592000','https://webfs.ali.kugou.com/202109271009/ac5e4c1b2e0e14cc1fc06d6ef8bbd286/KGTX/CLTX001/38aead7ed546b0736791ebb25c3a3951.mp3','张杰/张碧晨',2),
(4,'你要跳舞吗','生命因你而火热','https://imgessl.kugou.com/stdmusic/20160407/20160407002744966139.jpg','https://webfs.ali.kugou.com/202109271014/fd2f5cee5791b2ed79bd65490c5af5a7/KGTX/CLTX001/58ffa0221ed9397e7ad9b889cdbe1a4a.mp3','新裤子乐队',2);/*Table structure for table `tb_sheet` */DROP TABLE IF EXISTS `tb_sheet`;CREATE TABLE `tb_sheet` (`id` int(11) NOT NULL AUTO_INCREMENT,`sheet_name` varchar(255) NOT NULL,PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;/*Data for the table `tb_sheet` */insert  into `tb_sheet`(`id`,`sheet_name`) values
(1,'热歌榜'),
(2,'新歌榜'),
(3,'原创榜'),
(6,'抖音榜');/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

文件结构

     

我是通过druid连接的数据库

druid.properties配置文件

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/wyy_music?useSSL=false
username=root
password=1234initialSize=5
maxActive=20
maxWait=2000

JdbcUtil

package com.java.util;import com.alibaba.druid.pool.DruidDataSourceFactory;
import org.apache.commons.dbutils.QueryRunner;import javax.sql.DataSource;
import java.io.InputStream;
import java.util.Properties;//使用DBUtils的工具类
public class JdbcUtil {//声明DataSource对象private static DataSource dataSource;//静态代码块static {try {//读取db.properties文件InputStream resourceAsStream = JdbcUtil.class.getResourceAsStream("/druid.properties");//创建Properties对象Properties properties = new Properties();//加载流对象properties.load(resourceAsStream);//创建数据源对象dataSource = DruidDataSourceFactory.createDataSource(properties);} catch (Exception e) {e.printStackTrace();}}//获取DButils中核心类对象QueryRunner对象public static QueryRunner getQueryRunner(){return new QueryRunner(dataSource);//此时已经连接上数据库了}}

实体类层 pojo

Music类

package com.java.pojo;import java.io.Serializable;//实体类
public class Music implements Serializable {private Integer musicId;private String musicName;private String musicAlbumName;private String musicAlbumPicurl;private String musicMp3url;private String musicArtistName;private String sheetId;public Integer getMusicId() {return musicId;}public void setMusicId(Integer musicId) {this.musicId = musicId;}public String getMusicName() {return musicName;}public void setMusicName(String musicName) {this.musicName = musicName;}public String getMusicAlbumName() {return musicAlbumName;}public void setMusicAlbumName(String musicAlbumName) {this.musicAlbumName = musicAlbumName;}public String getMusicAlbumPicurl() {return musicAlbumPicurl;}public void setMusicAlbumPicurl(String musicAlbumPicurl) {this.musicAlbumPicurl = musicAlbumPicurl;}public String getMusicMp3url() {return musicMp3url;}public void setMusicMp3url(String musicMp3url) {this.musicMp3url = musicMp3url;}public String getMusicArtistName() {return musicArtistName;}public void setMusicArtistName(String musicArtistName) {this.musicArtistName = musicArtistName;}public String getSheetId() {return sheetId;}public void setSheetId(String sheetId) {this.sheetId = sheetId;}@Overridepublic String toString() {return "Music{" +"musicId=" + musicId +", musicName='" + musicName + '\'' +", musicAlbumName='" + musicAlbumName + '\'' +", musicAlbumPicurl='" + musicAlbumPicurl + '\'' +", musicMp3url='" + musicMp3url + '\'' +", musicArtistName='" + musicArtistName + '\'' +", sheetId='" + sheetId + '\'' +'}';}
}

sheet类

package com.java.pojo;public class Sheet {private Integer id;private String sheetName;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getSheetName() {return sheetName;}public void setSheetName(String sheetName) {this.sheetName = sheetName;}@Overridepublic String toString() {return "Sheet{" +"id=" + id +", sheetName='" + sheetName + '\'' +'}';}
}

dao层

package com.java.dao;import com.java.pojo.Music;import java.util.List;public interface MusicDao {public List<Music> findAll();public Music findById(String musicId);public List<Music> findByMusicName(String musicName);
}

package com.java.dao;import com.java.pojo.Sheet;import java.util.List;public interface SheetDao {public List<Sheet> getSheet();public void insertSheet(String sheetName);
}

dao层实现类

package com.java.dao.impl;import com.java.dao.MusicDao;
import com.java.pojo.Music;
import com.java.util.JdbcUtil;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;import java.sql.SQLException;
import java.util.List;public class MusicDaoImpl implements MusicDao {@Overridepublic List<Music> findAll() {String sql = "select music_id musicId,music_name musicName,music_album_name musicAlbumName," +"music_album_picUrl musicAlbumPicurl,music_mp3Url musicMp3url," +"music_artist_name musicArtistName,sheet_id sheetId from tb_music";QueryRunner queryRunner = JdbcUtil.getQueryRunner();List<Music> musicList = null;try {musicList = queryRunner.query(sql, new BeanListHandler<Music>(Music.class));} catch (SQLException e) {e.printStackTrace();}return musicList;}@Overridepublic Music findById(String musicId) {String sql = "select music_id musicId,music_name musicName,music_album_name musicAlbumName," +"music_album_picUrl musicAlbumPicurl,music_mp3Url musicMp3url," +"music_artist_name musicArtistName,sheet_id sheetId from tb_music where music_id = ?";QueryRunner queryRunner = JdbcUtil.getQueryRunner();Music music = null;try {music = queryRunner.query(sql, new BeanHandler<Music>(Music.class), musicId);} catch (SQLException e) {e.printStackTrace();}return music;}@Overridepublic List<Music> findByMusicName(String musicName) {String sql = "select music_id musicId,music_name musicName,music_album_name musicAlbumName," +"music_album_picUrl musicAlbumPicurl,music_mp3Url musicMp3url," +"music_artist_name musicArtistName,sheet_id sheetId from tb_music where music_name like ?";QueryRunner queryRunner = JdbcUtil.getQueryRunner();List<Music> musicList = null;try {musicList = queryRunner.query(sql, new BeanListHandler<Music>(Music.class), "%" + musicName + "%");} catch (SQLException e) {e.printStackTrace();}return musicList;}
}

package com.java.dao.impl;import com.java.dao.SheetDao;
import com.java.pojo.Sheet;
import com.java.util.JdbcUtil;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;import java.sql.SQLException;
import java.util.List;public class SheetDaoImpl implements SheetDao {@Overridepublic List<Sheet> getSheet() {String sql = "select id,sheet_name sheetName from tb_sheet";QueryRunner queryRunner = JdbcUtil.getQueryRunner();List<Sheet> query = null;try {query = queryRunner.query(sql, new BeanListHandler<Sheet>(Sheet.class));} catch (SQLException e) {e.printStackTrace();}return query;}@Overridepublic void insertSheet(String sheetName) {String sql = "insert into tb_sheet(sheet_name) values (?)";QueryRunner queryRunner = JdbcUtil.getQueryRunner();try {int update = queryRunner.update(sql,sheetName);} catch (SQLException e) {e.printStackTrace();}}
}

service层

package com.java.service;import com.java.pojo.Music;import java.util.List;public interface MusicService {public List<Music> findAll();public Music findById(String musicId);public List<Music> findByMusicName(String musicName);public Music nextSong(String musicId);public Music lastSong(String musicId);
}

package com.java.service;import com.java.pojo.Sheet;import java.util.List;public interface SheetService {public List<Sheet> getSheet();public void addSheet(String sheetName);
}

package com.java.service.impl;import com.java.dao.MusicDao;
import com.java.dao.impl.MusicDaoImpl;
import com.java.pojo.Music;
import com.java.service.MusicService;import java.util.List;public class MusicServiceImpl implements MusicService {@Overridepublic List<Music> findAll() {MusicDao musicDao = new MusicDaoImpl();List<Music> musicList = musicDao.findAll();return musicList;}@Overridepublic Music findById(String musicId) {MusicDao musicDao = new MusicDaoImpl();Music music = musicDao.findById(musicId);return music;}@Overridepublic List<Music> findByMusicName(String musicName) {MusicDao musicDao = new MusicDaoImpl();List<Music> musicNameList = musicDao.findByMusicName(musicName);return musicNameList;}@Overridepublic Music nextSong(String musicId) {MusicDao musicDao = new MusicDaoImpl();List<Music> musicList = musicDao.findAll();if (musicList.size()>0){int currentIndex = 0;for (int i = 0; i < musicList.size(); i++) {if (musicList.get(i).getMusicId().equals(Integer.parseInt(musicId))){currentIndex = i;break;}}int nextSongIndex = currentIndex == musicList.size() -1 ? 0 : currentIndex+1;return musicList.get(nextSongIndex);}else {throw new RuntimeException("歌曲列表不存在");}}@Overridepublic Music lastSong(String musicId) {MusicDao musicDao = new MusicDaoImpl();List<Music> musicList = musicDao.findAll();if (musicList.size()>0){int currentIndex = 0;for (int i = 0; i < musicList.size(); i++) {if (musicList.get(i).getMusicId().equals(Integer.parseInt(musicId))){currentIndex = i;break;}}int lastSongIndex = currentIndex == 0 ? musicList.size()-1 : currentIndex-1;return musicList.get(lastSongIndex);}else {throw new RuntimeException("歌曲列表不存在");}}
}

package com.java.service.impl;import com.java.dao.SheetDao;
import com.java.dao.impl.SheetDaoImpl;
import com.java.pojo.Sheet;
import com.java.service.SheetService;import java.util.List;public class SheetServiceImpl implements SheetService {@Overridepublic List<Sheet> getSheet() {SheetDao sheetDao = new SheetDaoImpl();List<Sheet> sheet = sheetDao.getSheet();return sheet;}@Overridepublic void addSheet(String sheetName) {SheetDao sheetDao = new SheetDaoImpl();sheetDao.insertSheet(sheetName);}
}

web层

package com.java.web;import com.java.service.SheetService;
import com.java.service.impl.SheetServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/addSheetServlet")
public class AddSheetServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setCharacterEncoding("utf-8");SheetService sheetService = new SheetServiceImpl();String sheetName = request.getParameter("sheetName");sheetService.addSheet(sheetName);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.dao.impl.MusicDaoImpl;
import com.java.pojo.Music;
import com.java.service.MusicService;
import com.java.service.impl.MusicServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;@WebServlet("/musicFindAllServlet")
public class MusicFindAllServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//设置字符集request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");//MusicService musicService = new MusicServiceImpl();List<Music> musicList = musicService.findAll();ObjectMapper objectMapper = new ObjectMapper();String jsonMusic = objectMapper.writeValueAsString(musicList);response.getWriter().write(jsonMusic);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.pojo.Music;
import com.java.service.MusicService;
import com.java.service.impl.MusicServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/musicFindByIdServlet")
public class MusicFindByIdServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");//MusicService musicService = new MusicServiceImpl();String musicId = request.getParameter("musicId");Music music = musicService.findById(musicId);ObjectMapper objectMapper = new ObjectMapper();String s = objectMapper.writeValueAsString(music);response.getWriter().write(s);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.pojo.Music;
import com.java.service.MusicService;
import com.java.service.impl.MusicServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;@WebServlet("/musicFindByMusicNameServlet")
public class MusicFindByMusicNameServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");MusicService musicService = new MusicServiceImpl();String musicName = request.getParameter("musicName");List<Music> musicList = musicService.findByMusicName(musicName);ObjectMapper objectMapper = new ObjectMapper();String s = objectMapper.writeValueAsString(musicList);response.getWriter().write(s);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.pojo.Music;
import com.java.service.MusicService;
import com.java.service.impl.MusicServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/musicLastSongServlet")
public class MusicLastSongServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");String musicId = request.getParameter("musicId");MusicService musicService = new MusicServiceImpl();Music music = musicService.lastSong(musicId);ObjectMapper objectMapper = new ObjectMapper();String s = objectMapper.writeValueAsString(music);response.getWriter().write(s);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.pojo.Music;
import com.java.service.MusicService;
import com.java.service.impl.MusicServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/musicNextSongServlet")
public class MusicNextSongServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");String musicId = request.getParameter("musicId");MusicService musicService = new MusicServiceImpl();Music music = musicService.nextSong(musicId);ObjectMapper objectMapper = new ObjectMapper();String s = objectMapper.writeValueAsString(music);response.getWriter().write(s);}
}

package com.java.web;import com.fasterxml.jackson.databind.ObjectMapper;
import com.java.pojo.Sheet;
import com.java.service.SheetService;
import com.java.service.impl.SheetServiceImpl;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;@WebServlet("/sheetServlet")
public class SheetServlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doGet(request, response);}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");SheetService sheetService = new SheetServiceImpl();List<Sheet> sheet = sheetService.getSheet();String s = new ObjectMapper().writeValueAsString(sheet);response.getWriter().write(s);}
}

接下来就是前端页面

在微信开发者工具中的文件结构是这样

前端的代码比较复杂这里就不过多整理了 如果有小伙伴想要源码可以加一下交流群

下面是效果展示

 

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