Java实战之制作在线音乐网站

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);

}

}

来源：https://blog.csdn.net/m0_59687645/article/details/122874906