Java实战之制作在线音乐网站
更新时间：2022年02月15日 13:43:13 作者：qq_1334611189
这篇文章主要介绍了如何通过Java实现一个精美风的在线音乐网站，文章采用到了JSP、JQuery、Ajax等技术，感兴趣的小伙伴可以了解一下
介绍
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
效果图
核心代码
用户管理控制层
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
protected WebResponse webResponse;
@Resource
protected IUserService userService;
@Resource
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"));
// 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);
paramMap.put("user_password", user_password);
data = paramMap;
User user = new User();
user.setUser_id(userId);
System.out.println("登录的id:" + user.getUser_id());
System.out.println("登录的用户名:" + session.getAttribute(tname));
System.out.println("前端，用户名：" + user_name + " 密码：" + user_password);
System.out.println("根据前端在数据库中查找到的用户名：" + tname + " 用户的id:" + userId);
// 用户名和密码匹配不成功，则返回的用户名为空
if (tname == null) {
System.out.println("用户不存在");
System.out.println();
statusMsg = "用户或密码错误！";
statusCode = 201;
return webResponse.getWebResponse(statusCode, statusMsg, data);
} else {
statusCode = 200;
webResponse.setStatusCode(statusCode);
System.out.println("状态码：" + webResponse.getStatusCode());
System.out.println("登录成功了");
System.out.println();
return webResponse.getWebResponseUserId(statusCode, statusMsg, data, userId);
}
}
// 更改密码 更改密码 更改密码
@RequestMapping(value = "/resetUserPassword", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse resetUserPassword(HttpServletRequest request, HttpSession session) {
Object data = null;
String statusMsg = "";
Integer statusCode = 200;
int uId = 0;
// 取参数的方法，对应登录表单中的用户名
String user_name = request.getParameter("user_name");
String newUser_password = request.getParameter("newUser_password");
try {
uId = (int) this.userService2.resetPassword(user_name, newUser_password);
System.out.println("修改密码返回的id:" + uId);
} catch (Exception e) {
}
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
// 用户注册
@RequestMapping(value = "/addOrEditUser", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse addOrEditTest(HttpServletRequest request, HttpServletResponse response, HttpSession session,
String user_id, @RequestParam(required = false) String user_name,
@RequestParam(required = false) String user_password) {
Object data = null;
String statusMsg = "用户名已存在，请重新注册！";
Integer statusCode = 201;
String rearchName = null;
try {
rearchName = this.userService.rearchUserName(user_name);
if (!(rearchName.equals("null"))) {
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
} catch (Exception e) {
}
System.out.println("判断用户是否重复：" + rearchName);
if (user_id == null || user_id.length() == 0) {
return this.addUser(request, response, session, user_name, user_password);
} else {
return this.editUser(request, response, session, user_id, user_name, user_password);
}
}
// 添加用户
@RequestMapping(value = "/addUser", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse addUser(HttpServletRequest request, HttpServletResponse response, HttpSession session,
String user_name, String user_password) {
Object data = null;
String statusMsg = "";
Integer statusCode = 200;
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("user_name", user_name);
paramMap.put("user_password", user_password);
data = paramMap;
if (user_name == null || "".equals(user_name.trim()) || user_password == null
|| "".equals(user_password.trim())) {
statusMsg = " 参数为空错误！！！！";
statusCode = 201;
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
if (user_name.length() > 255 || user_password.length() > 65535) {
statusMsg = " 参数长度过长错误！！！";
statusCode = 201;
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
User user = new User();
boolean isAdd = true;
return this.addOrEditUser(request, response, session, data, user, user_name, user_password, isAdd);
}
@RequestMapping(value = "/editUser", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse editUser(HttpServletRequest request, HttpServletResponse response, HttpSession session,
String user_id, @RequestParam(required = false) String user_name,
@RequestParam(required = false) String user_password) {
Object data = null;
String statusMsg = "";
Integer statusCode = 200;
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("user_id", user_id);
paramMap.put("user_name", user_name);
paramMap.put("user_password", user_password);
data = paramMap;
if (user_id == null || "".equals(user_id.trim())) {
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;
return this.addOrEditUser(request, response, session, data, user, user_name, user_password, isAdd);
}
/*
*
*/
private WebResponse addOrEditUser(HttpServletRequest request, HttpServletResponse response, HttpSession session,
Object data, User user, String user_name, String user_password, boolean isAdd) {
String statusMsg = "";
Integer statusCode = 200;
if (user_name != null && !("".equals(user_name.trim()))) {
if (user_name.length() > 255) {
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";
}
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
int num = this.userService.update(user);
if (num > 0) {
statusMsg = "成功修改！！！";
} 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！！！";
statusCode = 201;
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
User userVo = this.userService.getById(user_idNumNumeri);
if (userVo != null && userVo.getUser_id() > 0) {
data = userVo;
statusMsg = "获取单条数据成功！！！";
} else {
statusCode = 202;
statusMsg = "no record!!!";
}
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
@RequestMapping(value = "/getOneUser", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse getOneTest(@RequestParam(defaultValue = "正常", required = false) String tbStatus) {
LinkedHashMap<String, String> condition = new LinkedHashMap<String, String>();
condition.put("tb_status='" + tbStatus + "'", "");
User userVo = this.userService.getOne(condition);
Object data = null;
String statusMsg = "";
if (userVo != null && userVo.getUser_id() > 0) {
data = userVo;
statusMsg = "根据条件获取单条数据成功！！！";
} else {
statusMsg = "no record!!!";
}
return webResponse.getWebResponse(statusMsg, data);
}
@RequestMapping(value = "/getUserList", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse getTestList(HttpServletRequest request, HttpServletResponse response, HttpSession session,
@RequestParam(defaultValue = "1", required = false) Integer pageNo,
@RequestParam(defaultValue = "10", required = false) Integer pageSize,
@RequestParam(defaultValue = "正常", required = false) String tbStatus,
@RequestParam(required = false) String keyword,
@RequestParam(defaultValue = "test_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='"
* + 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("%'");
buf.append(")");
condition.put(buf.toString(), "and");
}
String field = null;
if (condition.size() > 0) {
condition.put(condition.entrySet().iterator().next().getKey(), "");
}
int count = this.userService.getCount(condition, field);
if (order != null && order.length() > 0 & "desc".equals(desc)) {
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) {
List<User> listFont = new ArrayList<User>();
User vo;
User voFont = new User();
for (int i = 0; i < size; i++) {
vo = list.get(i);
BeanUtils.copyProperties(vo, voFont);
listFont.add(voFont);
voFont = new User();
}
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,
@RequestParam(defaultValue = "10", required = false) Integer pageSize,
@RequestParam(defaultValue = "正常", required = false) String tbStatus,
@RequestParam(required = false) String keyword,
@RequestParam(defaultValue = "test_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='" + 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("%'");
buf.append(")");
condition.put(buf.toString(), "and");
}
String field = null;
if (condition.size() > 0) {
condition.put(condition.entrySet().iterator().next().getKey(), "");
}
int count = this.userService.getCount(condition, field);
if (order != null && order.length() > 0 & "desc".equals(desc)) {
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
public WebResponse delTest(int id) {
int num = this.userService.delBySign(id);
Object data = null;
String statusMsg = "";
if (num > 0) {
statusMsg = "成功删除！！！";
} else {
statusMsg = "no record!!!";
}
return webResponse.getWebResponse(statusMsg, data);
}
}我的音乐歌单管理
@Controller
@RequestMapping("/myMusic")
public class MyMusicController {
@Autowired
protected WebResponse webResponse;
@Resource
protected IMyMusicService myMusicService;
// @Autowired
// MyMusicService myMusicService2;
// 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) String user_name) {
WebResponse webResponse = new WebResponse();
MyMusic myMusic = new MyMusic();
System.out.println("接收到的用户名:" + user_name);
Integer statusCode = 200;
// 数据库插入语句，对应xml文件的insert
this.myMusicService.insert(myMusic);
webResponse.setStatusCode(statusCode);
return webResponse;
}
// 从数据库中获取歌曲数据，在我的音乐中显示
@RequestMapping(value = "/getMyMusicList", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse getMyMusicList(HttpServletRequest request, HttpServletResponse response, HttpSession session,
@RequestParam(defaultValue = "1", required = false) Integer pageNo,
@RequestParam(defaultValue = "10", 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,
@RequestParam(required = false) String user_name, @RequestParam(required = false) String user_password
) {
// 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"); }
*/
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)) {
order = order + " desc";
}
// List<MyMusic> list = this.myMusicService.getList(condition, pageNo, pageSize,
// order, field);
try {
List<MyMusic> list = this.myMusicService.getMyMusicList(userId);
Map<Object, Object> map = new HashMap<Object, Object>();
// map.put("total", count);
int size = list.size();
if (size > 0) {
List<MyMusic> listFont = new ArrayList<MyMusic>();
MyMusic vo;
MyMusic voFont = new MyMusic();
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 MyMusic();
}
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);
}
}catch (Exception e){
}
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
// 删除音乐
@RequestMapping(value = "/deleteMyMusic", method = RequestMethod.POST, produces = "application/json;charset=UTF-8")
@ResponseBody
public WebResponse deleteMyMusic(HttpServletRequest request, HttpServletResponse response, HttpSession session,
@RequestParam(required = false) Integer user_id, @RequestParam(required = false) Integer song_id) {
WebResponse webResponse = new WebResponse();
MyMusic myMusic = new MyMusic();
System.out.println("删除音乐前的用户名id:" + user_id);
Object data = null;
String statusMsg = "";
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;
}
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
}音乐链接管理
@Controller
@RequestMapping("/musicLink")
public class MusicLinkController {
@Autowired
protected WebResponse webResponse;
@Resource
protected IMusicLinkService musicLinkService;
@Resource
protected MusicLinkService musicLinkService2;
/**
* //常用注解快速解释：
* @Controller ：用于标记在一个类上，使用它标记的类就是一个SpringMVC Controller 对象。
* 分发处理器将会扫描使用了该注解的类的方法，并检测该方法是否使用了@RequestMapping 注解。@Controller
* 只是定义了一个控制器类，而使用@RequestMapping 注解的方法才是真正处理请求的处理器。
*
* @RequestMapping ：是一个用来处理请求地址映射的注解，可用于类或方法上。
* 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。
*
*
*
*
* @RequestParam（value="aa" required=false）
* 1.可以对传入参数指定参数名
*
* // 下面的对传入参数指定为aa，如果前端不传aa参数名，会报错
* @RequestParam(value="aa") String inputStr
*
* 2、可以通过required=false或者true来要求@RequestParam配置的前端参数是否一定要传
*
* 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='"
* + 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("%'");
buf.append(")");
condition.put(buf.toString(), "and");
}
String field = null;
if (condition.size() > 0) {
condition.put(condition.entrySet().iterator().next().getKey(), "");
}
int count = this.musicLinkService.getCount(condition, field);
if (order != null && order.length() > 0 & "desc".equals(desc)) {
order = order + " desc";
}
// 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！！！";
} 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,
@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);
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();
}
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);
}
// 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;
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) {
my_Id = Integer.parseInt(jSong);
}
} catch (Exception e) {
}
if (my_Id > 0) {
statusCode = 201;
statusMsg = "已收藏,请不要重复收藏！";
} else {
this.musicLinkService.insertSongRearch(song_id, userId);
}
System.out.println("收藏歌曲的用户id：" + userId);
return webResponse.getWebResponse(statusCode, statusMsg, data);
}
}到此这篇关于Java实战之制作在线音乐网站的文章就介绍到这了,更多相关Java在线音乐网站内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！
相关文章
本文介绍了使用pow函数和自定义for循环计算幂的O(n)时间复杂度方法,然后重点讲解了快速幂算法的分治思想,以及从二进制角度的解释,包括如何通过位运算和循环迭代实现高效计算,给出了Java代码实现2024-07-07
今天带大家来学习Java工具类,文中对注解@RequestMapping作了非常详细的介绍,对正在学习java的小伙伴们很有帮助,需要的朋友可以参考下2021-05-05
Selenium是一个开源的和便携式的自动化软件测试工具，用于测试Web应用程序有能力在不同的浏览器和操作系统运行。接下来通过本文给大家介绍Selenium处理select标签的下拉框，需要的朋友一起学习吧2016-04-04
SpringCloud-Hystrix-Dashboard客户端服务监控的实现方法
这篇文章主要介绍了SpringCloud-Hystrix-Dashboard客户端服务监控的实现方法,本文通过实例代码给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下2021-03-03
很多朋友遇到这样一个问题，直接在idea拉取代码，发现创建的模块包类型不一样了，类似这样的问题该如何处理呢？很多朋友向小编求助，在这统一回答大家，需要的朋友参考下本文吧2021-06-06
HTTP接口请求重试是指在请求失败时,再次发起请求的机制,在实际应用中,由于网络波动、服务器故障等原因,HTTP接口请求可能会失败,为了保证系统的可用性和稳定性,需要对HTTP接口请求进行重试,所以本文给大家介绍了HTTP接口请求重试的实现方式,需要的朋友可以参考下2024-01-01
Springboot使用redisson + 自定义注解实现消息的发布订阅(解决方案)
Redisson是一个基于Redis的Java驻留内存数据网格（In-Memory Data Grid）和分布式锁框架,它提供了一系列的分布式Java对象和服务,可以帮助开发者更方便地使用Redis作为数据存储和分布式锁的解决方案,感兴趣的朋友跟随小编一起看看吧2024-05-05
springboot使用AOP+反射实现Excel数据的读取
本文主要介绍了springboot使用AOP+反射实现Excel数据的读取，文中通过示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下2022-01-01
这篇文章主要介绍了通过简易例子讲解Java回调机制,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下2019-11-11
这篇文章主要介绍了java比较两个json文件的差异及说明，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教2022-10-10
最新评论