基于JAVA得在线音乐系统的设计与实现整体ER图 基于java在线音乐网站

基于javaweb+jsp的精美风在线音乐网站(java+JDBC+C3P0+servlet+mysql+JSP)

1.运行环境

环境配置：

Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）

项目技术：

JSP + C3P0+ Servlert + html+ css + JavaScript + JQuery + Ajax + Fileupload等等

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

}
		// 从数据库中获取数据，并把对象的结果集存到list列表中
		List<MusicLink> list = this.musicLinkService.getList(condition, pageNo, pageSize, order, field);
		Map<Object, Object> map = new HashMap<Object, Object>();
		map.put("total", count);
		// 如果数据库有15条音乐，则list中有15个对象，则size的大小为15
		int size = list.size();
		if (size > 0) {
			List<MusicLink> listFont = new ArrayList<MusicLink>();
			MusicLink vo;
			MusicLink voFont = new MusicLink();
			// 循环将获取到的对象及结构属性克隆到一个新的voFont对象中，并保存到动态数组中
			for (int i = 0; i < size; i++) {
				vo = list.get(i);
				// 通过java反射将类中当前属性字段对应的内容复制到另外一个类中
				BeanUtils.copyProperties(vo, voFont);
				listFont.add(voFont);
				voFont = new MusicLink();
			}
			map.put("list", listFont);
			// data是一个map对象
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";

Map<Object, Object> map = new HashMap<Object, Object>();
		map.put("total", count);
		int size = list.size();
		if (size > 0) {
			map.put("list", list);
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);
			data = map;
			statusCode = 202;
			statusMsg = "no record!!!";
		}
		return JSON.toJSONString(data);

try {
			user_Id = musicLinkService2.getUserId(user_name, user_password);
		} catch (Exception e) {
		}
		int userId = 0;
		try {
			// 判断字符串是否是数字，并且抛出异常
			boolean NotisNum = (user_Id.equals("null"));
			// System.out.println(NotisNum);
			if (!NotisNum) {
				userId = Integer.parseInt(user_Id);
			}
		} catch (Exception e) {
		}
		System.out.println("歌曲名：" + songName);
		String jSong = this.musicLinkService.judgeSong(songName, userId);
		int my_Id = 0;
		try {
			// 判断字符串是否是数字，并且抛出异常
			// boolean NotisNum
			// =(user_Id.equals(null)||user_Id.equals("")||user_Id.equals("null"));
			boolean NotisNum = (jSong.equals("null"));
			if (!NotisNum) {

@RequestMapping(value = "/getSongRearch", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse getSongRearch(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(required = false) String songName) {
		Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		// 调用Mapper层的songRearch方法，进行数据库的操作
		List<MusicLink> list = this.musicLinkService2.songRearch(songName);
		int count = list.size();
		System.out.println();
		System.out.println("搜索到的歌曲数：" + count);
		System.out.println("结束");
		Map<Object, Object> map = new HashMap<Object, Object>();
		map.put("total", count);

String statusMsg = "";
		int statusCode = 200;
		LinkedHashMap<String, String> condition = new LinkedHashMap<String, String>();
		/*
		 * if (tbStatus != null && tbStatus.length() > 0) { condition.put("tb_status='"
		 * + tbStatus + "'", "and"); }
		 */
		if (keyword != null && keyword.length() > 0) {
			StringBuffer buf = new StringBuffer();
			buf.append("(");
			buf.append("test_name like '%").append(keyword).append("%'");
			buf.append(" or ");
			buf.append("info like '%").append(keyword).append("%'");
			buf.append(" or ");
			buf.append("other like '%").append(keyword).append("%'");

*  
	 *   3、如果@requestParam注解的参数是int类型，并且required=false，此时如果不传参数的话，会报错。原因是，required=false时，不传参数的话，
	 *   会给参数赋值null，这样就会把null赋值给了int，因此会报错。
	 *      
	 *
	 * 
	 */ 
	
	// 从数据库中获取歌曲数据，在榜单中显示
	@RequestMapping(value = "/getMusicLinkList", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse getMusicLinkList(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(defaultValue = "1", required = false) Integer pageNo,
			@RequestParam(defaultValue = "30", required = false) Integer pageSize,
			@RequestParam(defaultValue = "正常", required = false) String tbStatus,
			@RequestParam(required = false) String keyword,
			@RequestParam(defaultValue = "ml_id", required = false) String order,
			@RequestParam(defaultValue = "desc", required = false) String desc) {
		Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		LinkedHashMap<String, String> condition = new LinkedHashMap<String, String>();
		/*
		 * if (tbStatus != null && tbStatus.length() > 0) { condition.put("tb_status='"

protected IMyMusicService MyMusicService;
	@Autowired
	UserService userService2;
	String newName = null;
	// 登录功能
	@RequestMapping(value = "/loginPage", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse loginCon(HttpServletRequest request, HttpSession session) {
		// 取参数的方法，对应登录表单中的用户名name="user_name"
		String user_name = request.getParameter("user_name");
		String user_password = request.getParameter("user_password");
		// 调用mapper层的登录的方法，从数据库中匹配用户名和密码，并放回用户名
		String tname = userService2.login(user_name, user_password);
		String user_Id = userService2.getUserById(user_name, user_password);
		// newUserId = user_Id; //修改密码用的
		int userId = 0;
		try {
			// 判断字符串是否是数字，并且抛出异常
			// boolean NotisNum
			// =(user_Id.equals(null)||user_Id.equals("")||user_Id.equals("null"));
			boolean NotisNum = (user_Id.equals("null"));

Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		// 调用Mapper层的songRearch方法，进行数据库的操作
		List<MusicLink> list = this.musicLinkService2.songRearch(songName);
		int count = list.size();
		System.out.println();
		System.out.println("搜索到的歌曲数：" + count);
		System.out.println("结束");
		Map<Object, Object> map = new HashMap<Object, Object>();
		map.put("total", count);
		int size = list.size();
		if (size > 0) {
			List<MusicLink> listFont = new ArrayList<MusicLink>();
			MusicLink vo;
			MusicLink voFont = new MusicLink();
			for (int i = 0; i < size; i++) {
				vo = list.get(i);
				BeanUtils.copyProperties(vo, voFont);
				listFont.add(voFont);
				voFont = new MusicLink();

*  用于类上，表示类中的所有响应请求的方法都是以该地址作为父路径；
	 *  用于方法上，表示在类的父路径下追加方法上注解中的地址将会访问到该方法
	 *  
	 *  @Autowired：@Autowired 注释，它可以对类成员变量、方法及构造函数进行标注，完成自动装配的工作。 通过 @Autowired的使用来消除 set ，get方法。
	 *  
	 * 
	 *  @Resource：@Autowired与@Resource都可以用来装配bean. 都可以写在字段上,或写在setter方法上。
	 *  
	 *  
	 *  @Responsebody 注解表示该方法的返回的结果直接写入 HTTP 响应正文（ResponseBody）中，
	 *  一般在异步获取数据时使用，通常是在使用 @RequestMapping 后，返回值通常解析为跳转路径，
	 *  加上 @Responsebody 后返回结果不会被解析为跳转路径，而是直接写入HTTP 响应正文中。 
     *  作用： 该注解用于将Controller的方法返回的对象，通过适当的HttpMessageConverter转换为指定格式后，写入到Response对象的body数据区。
     *   
     *
     *
	 *

// data是一个map对象
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);
			data = map;
			statusCode = 202;
			statusMsg = "no record!!!";
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
	// 歌曲搜索功能
	@RequestMapping(value = "/getSongRearch", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse getSongRearch(HttpServletRequest request, HttpServletResponse response, HttpSession session,

try {
			// 判断字符串是否是数字，并且抛出异常
			// boolean NotisNum
			// =(user_Id.equals(null)||user_Id.equals("")||user_Id.equals("null"));
			boolean NotisNum = (user_Id.equals("null"));
			// System.out.println(NotisNum);
			if (!NotisNum) {
				userId = Integer.parseInt(user_Id);
			}
		} catch (Exception e) {
		}
//	   
		session.setAttribute("tname", tname);
		session.setAttribute("userId", userId);
		Object data = null;
		String statusMsg = "";
		Integer statusCode = 200;
		Map<String, String> paramMap = new HashMap<String, String>();
		paramMap.put("user_name", user_name);

int statusCode = 201;
		int del = 0;
		if (user_id == null){
			 del = this.myMusicService.deleteMyMusic(song_id, 0);
		}else {
			del = this.myMusicService.deleteMyMusic(song_id, user_id);
		}
		if (del > 0) {
			statusCode = 200;
		}

// 歌曲收藏
	@RequestMapping(value = "/addMusicCollect", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse addMusicCollect(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(required = false) int song_id, @RequestParam(required = false) String user_name,
			@RequestParam(required = false) String user_password, @RequestParam(required = false) String songName) {
		WebResponse webResponse = new WebResponse();
		MusicLink musicLink = new MusicLink();
		User user = new User();
		System.out.println("歌曲id：" + song_id + " 用户名：" + user_name + "  户用密码：" + user_password);
		Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		String user_Id = null;

return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
}
音乐链接管理：
@Controller 
@RequestMapping("/musicLink")
public class MusicLinkController {
	@Autowired
	protected WebResponse webResponse;
	@Resource

//		System.out.println("我的音乐显示列表前收藏的歌曲id:" + song_id);
		String user_Id = null;
		try {
			user_Id = myMusicService.getUserById(user_name, user_password);
		} catch (Exception e) {
		}
		int userId = 0;
		try {
			// 判断字符串是否是数字，并且抛出异常
			boolean NotisNum = (user_Id.equals("null"));
			// System.out.println(NotisNum);
			if (!NotisNum) {
				userId = Integer.parseInt(user_Id);
			}
		} catch (Exception e) {
		}
		System.out.println("我的音乐显示列表前用户id:" + userId);
		Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		LinkedHashMap<String, String> condition = new LinkedHashMap<String, String>();
		/*
		 * if (tbStatus != null && tbStatus.length() > 0) { condition.put("tb_status='"
		 * + tbStatus + "'", "and"); }

statusMsg = "未获得主键参数错误！！！";
			statusCode = 201;
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		Integer user_idNumeri = user_id.matches("^[0-9]*$") ? Integer.parseInt(user_id) : 0;
		if (user_idNumeri == 0) {
			statusMsg = "主键不为数字错误！！！";
			statusCode = 201;
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		User userVo = this.userService.getById(user_idNumeri);
		User user = new User();
		BeanUtils.copyProperties(userVo, user); // 浅复制，重要
		boolean isAdd = false;

} else {
			statusCode = 202;
			statusMsg = "update false";
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
	@RequestMapping(value = "/getUserById", produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse getUserById(String user_id) {
		Object data = user_id;
		Integer statusCode = 200;
		String statusMsg = "";
		if (user_id == null || user_id.length() == 0 || user_id.length() > 11) {
			statusMsg = "参数为空或参数过长错误！！！";
			statusCode = 201;
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		Integer user_idNumNumeri = user_id.matches("^[0-9]*$") ? Integer.parseInt(user_id) : 0;
		if (user_idNumNumeri == 0) {
			statusMsg = "参数数字型错误！！！";

for (int i = 0; i < size; i++) {
				vo = list.get(i);
				// 通过java反射将类中当前属性字段对应的内容复制到另外一个类中
				BeanUtils.copyProperties(vo, voFont);
				listFont.add(voFont);
				voFont = new MusicLink();
			}
			map.put("list", listFont);
			// data是一个map对象
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";

for (int i = 0; i < size; i++) {
				vo = list.get(i);
				BeanUtils.copyProperties(vo, voFont);
				listFont.add(voFont);
				voFont = new MusicLink();
			}
			map.put("list", listFont);
			data = map;
//				for (int i = 0; i < map.size(); i++) {
//					System.out.println(map.get(listFont).toString());
//				}
//				
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);

MusicLink vo;
			MusicLink voFont = new MusicLink();
			for (int i = 0; i < size; i++) {
				vo = list.get(i);
				BeanUtils.copyProperties(vo, voFont);
				listFont.add(voFont);
				voFont = new MusicLink();
			}
			map.put("list", listFont);
			data = map;
//				for (int i = 0; i < map.size(); i++) {
//					System.out.println(map.get(listFont).toString());
//				}
//				
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);
			data = map;
			statusCode = 202;
			statusMsg = "no record!!!";
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}

order = order + " desc";
		}
		List<User> list = this.userService.getList(condition, pageNo, pageSize, order, field);
		Map<Object, Object> map = new HashMap<Object, Object>();
		map.put("total", count);
		int size = list.size();
		if (size > 0) {
			map.put("list", list);
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);
			data = map;
			statusCode = 202;
			statusMsg = "no record!!!";
		}
		return JSON.toJSONString(data);
	}
	@RequestMapping(value = "/delUser", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody

return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
	// 歌曲收藏
	@RequestMapping(value = "/addMusicCollect", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse addMusicCollect(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(required = false) int song_id, @RequestParam(required = false) String user_name,
			@RequestParam(required = false) String user_password, @RequestParam(required = false) String songName) {

}
			map.put("list", listFont);
			data = map;
			statusMsg = "根据条件获取分页数据成功！！！";
		} else {
			map.put("list", list);
			data = map;
			statusCode = 202;
			statusMsg = "no record!!!";
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
	@RequestMapping(value = "/getAdminUserList", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public String getAdminTestList(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(defaultValue = "1", required = false) Integer pageNo,

statusMsg = " 参数长度过长错误,testName";
				statusCode = 201;
				return webResponse.getWebResponse(statusCode, statusMsg, data);
			}
			// 重要，建立数据，以便后期数据库能调用数据
			user.setUser_name(user_name); // 建立用户名
			user.setUser_password(user_password); // 建立密码
		}
		if (user_password != null && !("".equals(user_password.trim()))) {
			if (user_password.length() > 65535) {
				statusMsg = " 参数长度过长错误,info";
				statusCode = 201;
				return webResponse.getWebResponse(statusCode, statusMsg, data);
			}
		}
		if (isAdd) {
			// 插入语句，插入数据库，重要
			this.userService.insert(user);
			if (user.getUser_id() > 0) {
				statusMsg = "成功插入！！！";
			} else {
				statusCode = 202;
				statusMsg = "insert false";

*/
		if (keyword != null && keyword.length() > 0) {
			StringBuffer buf = new StringBuffer();
			buf.append("(");
			buf.append("test_name like '%").append(keyword).append("%'");
			buf.append(" or ");
			buf.append("info like '%").append(keyword).append("%'");
			buf.append(" or ");
			buf.append("other like '%").append(keyword).append("%'");
			buf.append(")");
			condition.put(buf.toString(), "and");
		}
		String field = null;
		if (condition.size() > 0) {
			condition.put(condition.entrySet().iterator().next().getKey(), "");
		}
		// int count = this.myMusicService.getCount(condition, field);
		if (order != null && order.length() > 0 & "desc".equals(desc)) {

statusMsg = "no record!!!";
			return webResponse.getWebResponse(statusCode, statusMsg, data);
		}
		return webResponse.getWebResponse(statusCode, statusMsg, data);
	}
	// 歌曲搜索功能
	@RequestMapping(value = "/getSongRearch", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
	@ResponseBody
	public WebResponse getSongRearch(HttpServletRequest request, HttpServletResponse response, HttpSession session,
			@RequestParam(required = false) String songName) {
		Object data = null;
		String statusMsg = "";
		int statusCode = 200;
		// 调用Mapper层的songRearch方法，进行数据库的操作
		List<MusicLink> list = this.musicLinkService2.songRearch(songName);