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musicDataBase.cpp
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#include "musicDataBase.h"
#include<QSqlQuery>
#include<QMessageBox>
#include<QApplication>
#include<QSqlError>
#include<QFileInfo>
#include<QDebug>
#include<QSqlRecord>
MusicDataBase::MusicDataBase(QObject *parent) : QObject(parent)
{
qDebug() << QSqlDatabase::drivers();//当前环境支持哪些数据库
QMutexLocker lockData( &m_mutex); //加锁，函数执行完后自动解锁
m_database=QSqlDatabase::addDatabase("QSQLITE");
QString dirPath = QString(getenv("HOME")) + "/.config/.kylin_music_ver1.0_";
//TODO
// QFileInfo oldVersion(dirPath + "mymusic.db");
// if(oldVersion.exists())
// {
//读取旧版本数据库内容，并添加至新版本数据库函数
// }
m_database.setDatabaseName(dirPath + "mymusic.db");
}
MusicDataBase::~MusicDataBase()
{
qDebug() << "析构";
if(true == m_databaseOpenFlag)
{
m_database.close();
}
}
MusicDataBase* MusicDataBase::getInstance()
{
static MusicDataBase *dbInstance = nullptr;
if (dbInstance == nullptr)
{
try
{
dbInstance = new MusicDataBase;
}
catch (const std::runtime_error &re)
{
qDebug() << "runtime_error:" << re.what();
}
}
return dbInstance;
}
int MusicDataBase::initDataBase()
{
if(!m_database.open())
{
m_databaseOpenFlag = true;
QMessageBox::warning(0, QObject::tr("Database Error"),
m_database.lastError().text());
return DB_UNCONNECT;
}
bool queryRes = true;
QSqlQuery queryInit(m_database);
//新建表:总表，历史表，我喜欢表
queryRes &= queryInit.exec(QString("create table if not exists LocalMusic ("
"filepath varchar primary key,"
"title varchar,"
"singer varchar,"
"album varchar,"
"filetype varchar,"
"size varchar,"
"time varchar)"
));//创建音乐总表
queryRes &= queryInit.exec(QString("create table if not exists HistoryPlayList ("
"filepath varchar primary key,"
"title varchar,"
"singer varchar,"
"album varchar,"
"filetype varchar,"
"size varchar,"
"time varchar)"
));//创建历史播放列表
queryRes &= queryInit.exec(QString("create table if not exists ListOfPlayList (title varchar primary key)"));//创建播放列表名称列表
if(true == queryRes)
{
qDebug()<<"本地列表，历史列表，歌单表创建成功！";
//创建我喜欢列表
//先检查是否存在
int checkRes;
checkRes = checkPlayListExist("我喜欢");
if(LIST_NOT_FOUND == checkRes)//我喜欢列表不存在才创建
{
int createRes;
createRes = createNewPlayList("我喜欢");
return createRes;
}
else
{
return checkRes;
}
}
else
{
return CREATE_TABLE_FAILED;
}
}
int MusicDataBase::addMusicToLocalMusic(const musicDataStruct &fileData)
{
bool queryRes = true;
//如果是直接添加至总表
if(fileData.title.isEmpty() || fileData.filepath.isEmpty())
{
return INVALID_INPUT;
}
else
{
if(true == m_database.isValid())
{
//查询历史列表中是否已有该歌曲，已有的话，返回添加失败
int checkLocalRes = checkIfSongExistsInLocalMusic(fileData.filepath);
//历史列表中已经有这首歌，重复添加了
if(DB_OP_SUCC == checkLocalRes)
{
return DB_OP_ADD_REPEAT;
}
QSqlQuery addSongToLocal(m_database);
QString addSongString = QString("insert into LocalMusic values('%1','%2','%3','%4','%5','%6','%7')").
arg(inPutStringHandle(fileData.filepath)).
arg(inPutStringHandle(fileData.title)).
arg(inPutStringHandle(fileData.singer)).
arg(inPutStringHandle(fileData.album)).
arg(inPutStringHandle(fileData.filetype)).
arg(inPutStringHandle(fileData.size)).
arg(inPutStringHandle(fileData.time));
queryRes &= addSongToLocal.exec(addSongString);
if(true == queryRes)
{
return DB_OP_SUCC;
}
else
{
return DB_OP_ADD_FAILED;
}
}
else
{
return DB_UNCONNECT;
}
}
//如果是先添加至新建列表
//TODO
//添加至新建列表
}
int MusicDataBase::delMusicFromLocalMusic(const QString& filePath)
{
bool queryRes = true;
//如果是直接添加至总表
if(filePath.isEmpty())
{
return INVALID_INPUT;
}
else
{
if(true == m_database.isValid())
{
int checkRes = checkIfSongExistsInLocalMusic(filePath);
if(checkRes == DB_OP_SUCC)
{
QSqlQuery delSongFromLocal(m_database);
QString delSongString = QString("delete from LocalMusic where filepath = '%1'").
arg(inPutStringHandle(filePath));
queryRes = delSongFromLocal.exec(delSongString);
if(true == queryRes)
{
return DB_OP_SUCC;
}
else
{
qDebug() << "数据库打开，删除失败！！！";
return DB_OP_DEL_FAILED;
}
}
else
{
return INVALID_INPUT;
}
}
else
{
qDebug() << "数据库无法打开，请重试！！！";
return DB_UNCONNECT;
}
}
//从其他歌单中也要删除
//TODO,中间删除失败，要添加回去
//检查歌曲是否在历史歌单中存在
}
int MusicDataBase::createNewPlayList(const QString& playListName)
{
if(playListName.isEmpty())
{
return INVALID_INPUT;
}
if(true == m_database.isValid())
{
bool createRes = true;
// QMutexLocker lockData( &m_mutex); //加锁，函数执行完后自动解锁
QSqlQuery createNewPlayList(m_database);
QString createPlayListString = QString("create table if not exists 'playlist_%1' ("
"filepath varchar primary key,"
"title varchar,"
"singer varchar,"
"album varchar,"
"filetype varchar,"
"size varchar,"
"time varchar)").
arg(inPutStringHandle(playListName));
createRes &= createNewPlayList.exec(createPlayListString);
if(true != createRes)
{
return CREATE_TABLE_FAILED;
}
QSqlQuery addPlayListToList(m_database);
QString addPlayListToListString = QString("insert into ListOfPlayList values('%1')").
arg(inPutStringHandle(playListName));
createRes &= addPlayListToList.exec(addPlayListToListString);
if(true == createRes)
{
return DB_OP_SUCC;
}
else
{
return CREATE_TABLE_FAILED;
}
}
else
{
return DB_UNCONNECT;
}
}
int MusicDataBase::delPlayList(const QString& playListName)
{
//入参检查
if(playListName.isEmpty() || playListName == "我喜欢")
{
return INVALID_INPUT;
}
if(true == m_database.isValid())
{
bool delRes = true;
QSqlQuery delPlayListFromList(m_database);
QString delPlayListFromListString = QString("delete from ListOfPlayList where title = '%1'").
arg(inPutStringHandle(playListName));
delRes &= delPlayListFromList.exec(delPlayListFromListString);
QSqlQuery delPlayList(m_database);
QString delPlayListString = QString("drop table if exists 'playlist_%1'"
).arg(inPutStringHandle(playListName));
delRes &= delPlayList.exec(delPlayListString);
if(true == delRes)
{
return DB_OP_SUCC;
}
else
{
return DEL_TABLE_FAILED;
}
}
else
{
return DB_UNCONNECT;
}
}
int MusicDataBase::getSongInfoFromLocalMusic(const QString& filePath, musicDataStruct &fileData)
{
if(filePath.isEmpty())
{
return INVALID_INPUT;
}
if(true == m_database.isValid())
{
bool getRes = true;
QSqlQuery getSongFromLocalMusic(m_database);
QString getSongString = QString("select * from LocalMusic where filepath = '%1'").arg(inPutStringHandle(filePath));
getRes = getSongFromLocalMusic.exec(getSongString);
if(true == getRes)
{
if(getSongFromLocalMusic.next())
{
fileData.filepath = outPutStringHandle(getSongFromLocalMusic.value(0).toString());
fileData.title = outPutStringHandle(getSongFromLocalMusic.value(1).toString());
fileData.singer = outPutStringHandle(getSongFromLocalMusic.value(2).toString());
fileData.album = outPutStringHandle(getSongFromLocalMusic.value(3).toString());
fileData.filetype = outPutStringHandle(getSongFromLocalMusic.value(4).toString());
fileData.size = outPutStringHandle(getSongFromLocalMusic.value(5).toString());
fileData.time = outPutStringHandle(getSongFromLocalMusic.value(6).toString());
}
else
{
qDebug() << "数据库中查无此歌！" <<__FILE__<< ","<<__FUNCTION__<<","<<__LINE__;
return DB_DISORDERD;
}
return DB_OP_SUCC;
}
else
{
return DB_OP_GET_FAILED;
}
}
else
{
return DB_DISORDERD;
}
}
int MusicDataBase::getSongInfoListFromLocalMusic(QList<musicDataStruct>& resList)
{
if(true == m_database.isValid())
{
bool getRes = true;
QSqlQuery getSongListFromLocalMusic(m_database);
QString getSongListString = QString("select * from LocalMusic");
getRes = getSongListFromLocalMusic.exec(getSongListString);
if(true == getRes)
{
while(getSongListFromLocalMusic.next())
{
musicDataStruct temp;
temp.filepath = outPutStringHandle(getSongListFromLocalMusic.value(0).toString());
int curRes = getSongInfoFromLocalMusic(temp.filepath, temp);
if(DB_OP_SUCC == curRes)
{
resList.append(temp);
}
else
{
return curRes;
}
}
return DB_OP_SUCC;
}
else
{
return DB_OP_GET_FAILED;
}
}
else
{
return DB_DISORDERD;
}
}
int MusicDataBase::getSongInfoFromPlayList(musicDataStruct &fileData, const QString& filePath,const QString& playListName)
{
if(filePath.isEmpty() || playListName.isEmpty())
{
return INVALID_INPUT;
}
if(true == m_database.isValid())
{
int checkRes = checkPlayListExist(playListName);
if(checkRes == DB_OP_SUCC)
{
bool getRes = true;
QSqlQuery getplayList(m_database);
QString getplayListString = QString("select * from ListOfPlayList where title = '%1'").
arg(inPutStringHandle(playListName));
getRes = getplayList.exec(getplayListString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
if(getplayList.next())
{
QSqlQuery getSongFromPlayList(m_database);
QString getSongFromPlayListString = QString("select * from 'playlist_%1' where filepath = '%2'").
arg(inPutStringHandle(playListName)).arg(inPutStringHandle(filePath));
getRes = getSongFromPlayList.exec(getSongFromPlayListString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
if(getSongFromPlayList.next())
{
fileData.filepath = outPutStringHandle(getSongFromPlayList.value(0).toString());
fileData.title = outPutStringHandle(getSongFromPlayList.value(1).toString());
fileData.singer = outPutStringHandle(getSongFromPlayList.value(2).toString());
fileData.album = outPutStringHandle(getSongFromPlayList.value(3).toString());
fileData.filetype = outPutStringHandle(getSongFromPlayList.value(4).toString());
fileData.size = outPutStringHandle(getSongFromPlayList.value(5).toString());
fileData.time = outPutStringHandle(getSongFromPlayList.value(6).toString());
}
else
{
return DB_OP_GET_FAILED;
}
return DB_OP_SUCC;
}
else
{
return PLAYLIST_UNFOUND;
}
}
else
{
return checkRes;
}
}
else
{
return DB_UNCONNECT;
}
}
int MusicDataBase::getSongInfoListFromPlayList(QList<musicDataStruct>& resList,const QString& playListName)
{
if(playListName.isEmpty())
{
return INVALID_INPUT;
}
if(true == m_database.isValid())
{
int checkRes = checkPlayListExist(playListName);
if(checkRes == DB_OP_SUCC)
{
bool getRes = true;
resList.clear();
QSqlQuery getplayList(m_database);
QString getplayListString = QString("select * from ListOfPlayList where title = '%1'").
arg(inPutStringHandle(playListName));
getRes = getplayList.exec(getplayListString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
if(getplayList.next())
{
QSqlQuery getSongFromPlayList(m_database);
QString getSongFromPlayListString = QString("select * from 'playlist_%1'").
arg(inPutStringHandle(playListName));
getRes = getSongFromPlayList.exec(getSongFromPlayListString);
if(true == getRes)
{
while(getSongFromPlayList.next())
{
musicDataStruct temp;
temp.filepath = outPutStringHandle(getSongFromPlayList.value(0).toString());
temp.title = outPutStringHandle(getSongFromPlayList.value(1).toString());
temp.singer = outPutStringHandle(getSongFromPlayList.value(2).toString());
temp.album = outPutStringHandle(getSongFromPlayList.value(3).toString());
temp.filetype = outPutStringHandle(getSongFromPlayList.value(4).toString());
temp.size = outPutStringHandle(getSongFromPlayList.value(5).toString());
temp.time = outPutStringHandle(getSongFromPlayList.value(6).toString());
resList.append(temp);
}
if(0 == resList.size())
{
return DB_DISORDERD;
}
else
{
return DB_OP_SUCC;
}
}
else
{
return DB_OP_GET_FAILED;
}
}
else
{
return DB_DISORDERD;
}
}
else
{
return checkRes;
}
}
else
{
return DB_DISORDERD;
}
}
int MusicDataBase::addMusicToHistoryMusic(const QString& filePath)
{
if(filePath.isEmpty())
{
return INVALID_INPUT;
}
else
{
musicDataStruct temp;
if(true == m_database.isValid())
{
bool queryRes = true;
//检查歌曲在总表中是否存在
int checkLocalRes = getSongInfoFromLocalMusic(filePath, temp);
if(DB_OP_SUCC != checkLocalRes)
{
return checkLocalRes;
}
//查询历史列表中是否已有该歌曲，已有的话，返回添加失败
int checkHistoryRes = checkIfSongExistsInHistoryMusic(filePath);
//历史列表中已经有这首歌，重复添加了
if(DB_OP_SUCC == checkHistoryRes)
{
return DB_OP_ADD_REPEAT;
}
//历史列表中不存在该歌曲，添加该歌曲
QSqlQuery addSongToHistory(m_database);
QString addSongString = QString("insert into HistoryPlayList values('%1','%2','%3','%4','%5','%6','%7')").
arg(inPutStringHandle(temp.filepath)).
arg(inPutStringHandle(temp.title)).
arg(inPutStringHandle(temp.singer)).
arg(inPutStringHandle(temp.album)).
arg(inPutStringHandle(temp.filetype)).
arg(inPutStringHandle(temp.size)).
arg(inPutStringHandle(temp.time));
queryRes = addSongToHistory.exec(addSongString);
if(true == queryRes)
{
return DB_OP_SUCC;
}
else
{
qDebug() << "数据库打开，添加失败！！！";
return DB_OP_ADD_FAILED;
}
}
else
{
qDebug() << "数据库无法打开，请重试！！！";
return DB_UNCONNECT;
}
}
}
int MusicDataBase::delMusicFromHistoryMusic(const QString& filePath)
{
bool delRes = true;
if(filePath.isEmpty())
{
return INVALID_INPUT;
}
else
{
if(m_database.isValid())
{
//查询历史列表中是否已有该歌曲，没有的话，返回删除失败
int checkHistoryRes = checkIfSongExistsInHistoryMusic(filePath);
if(DB_OP_SUCC == checkHistoryRes)
{
QSqlQuery delSongFromHistoryPlayList(m_database);
QString delSongString = QString("delete from HistoryPlayList where filepath = '%1'").
arg(inPutStringHandle(filePath));
delRes &= delSongFromHistoryPlayList.exec(delSongString);
if(true == delRes)
{
return DB_OP_SUCC;
}
else
{
qDebug() << "数据库打开，删除失败！！！";
return DB_OP_DEL_FAILED;
}
}
else
{
qDebug() << "歌曲不存在！！！";
return checkHistoryRes;
}
}
else
{
qDebug() << "数据库无法打开，请重试！！！";
return DB_UNCONNECT;
}
}
}
int MusicDataBase::getSongInfoFromHistoryMusic(const QString& filePath, musicDataStruct &fileData)
{
bool getRes = true;
if(filePath.isEmpty())
{
return INVALID_INPUT;
}
else
{
if(true == m_database.isValid())
{
int checkRes = checkIfSongExistsInHistoryMusic(filePath);
if(checkRes == SONG_NOT_FOUND)
{
return SONG_NOT_FOUND;
}
else
{
QSqlQuery getSongInfoFromHistoryPlayList(m_database);
QString getSongString = QString("select * from HistoryPlayList where filepath = '%1'").arg(inPutStringHandle(filePath));
getRes &= getSongInfoFromHistoryPlayList.exec(getSongString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
//判断是否找到了对应的歌曲
if(getSongInfoFromHistoryPlayList.next())
{
fileData.filepath = outPutStringHandle(getSongInfoFromHistoryPlayList.value(0).toString());
fileData.title = outPutStringHandle(getSongInfoFromHistoryPlayList.value(1).toString());
fileData.singer = outPutStringHandle(getSongInfoFromHistoryPlayList.value(2).toString());
fileData.album = outPutStringHandle(getSongInfoFromHistoryPlayList.value(3).toString());
fileData.filetype = outPutStringHandle(getSongInfoFromHistoryPlayList.value(4).toString());
fileData.size = outPutStringHandle(getSongInfoFromHistoryPlayList.value(5).toString());
fileData.time = outPutStringHandle(getSongInfoFromHistoryPlayList.value(6).toString());
return DB_OP_SUCC;
}
else
{
return DB_DISORDERD;
}
}
}
else
{
qDebug() << "数据库无法打开，请重试！！！";
return DB_UNCONNECT;
}
}
}
int MusicDataBase::getSongInfoListFromHistoryMusic(QList<musicDataStruct>& resList)
{
if(true == m_database.isValid())
{
bool getRes = true;
QSqlQuery getSongListFromHistoryMusic(m_database);
QString getSongListString = QString("select * from HistoryPlayList");
getRes = getSongListFromHistoryMusic.exec(getSongListString);
if(true == getRes)
{
while(getSongListFromHistoryMusic.next())
{
musicDataStruct temp;
temp.filepath = outPutStringHandle(getSongListFromHistoryMusic.value(0).toString());
int curRes = getSongInfoFromHistoryMusic(temp.filepath, temp);
if(DB_OP_SUCC == curRes)
{
resList.append(temp);
}
else
{
return curRes;
}
}
return DB_OP_SUCC;
}
else
{
return DB_OP_GET_FAILED;
}
}
else
{
return DB_DISORDERD;
}
}
int MusicDataBase::checkIfSongExistsInLocalMusic(const QString& filePath)
{
bool queryRes = true;
QString filePathHash = inPutStringHandle(filePath);
QSqlQuery getSongFromLocalMusic(m_database);
QString getSongString = QString("select * from LocalMusic where filepath = '%1'").arg(filePathHash);
queryRes = getSongFromLocalMusic.exec(getSongString);
if(false == queryRes)
{
return DB_OP_GET_FAILED;
}
//判断总表中是否存在此歌曲，不存在返回错误！
if(getSongFromLocalMusic.next())
{
return DB_OP_SUCC;
}
else
{
qDebug() << "歌曲未找到";
return SONG_NOT_FOUND;
}
}
int MusicDataBase::checkIfSongExistsInHistoryMusic(const QString& filePath)
{
bool queryRes = true;
QString filePathHash = inPutStringHandle(filePath);
QSqlQuery getSongFromHistoryMusic(m_database);
QString getSongString = QString("select * from HistoryPlayList where filepath = '%1'").arg(filePathHash);
queryRes = getSongFromHistoryMusic.exec(getSongString);
if(false == queryRes)
{
return DB_OP_GET_FAILED;
}
//判断历史歌单中是否存在此歌曲，不存在返回错误！
if(getSongFromHistoryMusic.next())
{
return DB_OP_SUCC;
}
else
{
//歌曲未找到
return SONG_NOT_FOUND;
}
}
int MusicDataBase::checkIfSongExistsInPlayList(const QString& filePath, const QString& playListName)
{
if(filePath.isEmpty() || playListName.isEmpty())
{
return INVALID_INPUT;
}
QString filePathHash = inPutStringHandle(filePath);
QString playListNameHash = inPutStringHandle(playListName);
int checkRes = checkPlayListExist(playListName);
if(DB_OP_SUCC == checkRes)
{
bool queryRes = true;
QSqlQuery getSongFromPlayListMusic(m_database);
QString getSongString = QString("select * from 'playlist_%1' where filepath = '%2'").arg(playListNameHash).arg(filePathHash);
queryRes = getSongFromPlayListMusic.exec(getSongString);
if(false == queryRes)
{
return DB_OP_GET_FAILED;
}
//判断歌曲列表中是否存在此歌曲，不存在返回错误！
if(getSongFromPlayListMusic.next())
{
return DB_OP_SUCC;
}
else
{
//歌曲不存在
return SONG_NOT_FOUND;
}
}
else
{
return checkRes;
}
}
int MusicDataBase::getPlayList(QStringList& playListNameList)
{
bool getRes = true;
if(true == m_database.isValid())
{
// QMutexLocker lockData( &m_mutex); //加锁，函数执行完后自动解锁
QSqlQuery getplayListFromLocalMusic(m_database);
QString getplayListFromLocalMusicString = QString("select * from ListOfPlayList");
getRes = getplayListFromLocalMusic.exec(getplayListFromLocalMusicString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
while(getplayListFromLocalMusic.next())
{
playListNameList.append(outPutStringHandle(getplayListFromLocalMusic.value(0).toString()));
}
return DB_OP_SUCC;
}
else
{
return DB_DISORDERD;
}
}
int MusicDataBase::checkPlayListExist(const QString& playListName)
{
bool getRes = true;
QStringList playListNameList;
if(m_database.isValid())
{
QSqlQuery getplayListFromLocalMusic(m_database);
QString getplayListFromLocalMusicString = QString("select * from ListOfPlayList");
getRes = getplayListFromLocalMusic.exec(getplayListFromLocalMusicString);
if(false == getRes)
{
return DB_OP_GET_FAILED;
}
playListNameList.clear();
while(getplayListFromLocalMusic.next())
{
playListNameList.append(outPutStringHandle(getplayListFromLocalMusic.value(0).toString()));
}
if(playListNameList.contains(playListName))
{
return DB_OP_SUCC;
}
else
{
//该列表不存在
return LIST_NOT_FOUND;
}
}
else
{
return DB_DISORDERD;
}
}
//添加歌曲到新建歌单，使用歌曲的歌名值,歌单名值，输入数据必须有效，
int MusicDataBase::addMusicToPlayList(const QString& filePath,const QString& playListName)
{
if(filePath.isEmpty() || playListName.isEmpty())
{
return INVALID_INPUT;
}
int checkRes;
checkRes = checkPlayListExist(playListName);
if(DB_OP_SUCC == checkRes)
{
int checkLocalRes = checkIfSongExistsInLocalMusic(filePath);
if(DB_OP_SUCC == checkLocalRes)
{
musicDataStruct temp;
if(true == m_database.isValid())
{
//从总表中添加的，故要从总表中取歌曲信息！！！
//TODO缺少直接添加文件到播放列表的接口
int getLocalRes = getSongInfoFromLocalMusic(filePath, temp);
if(DB_OP_SUCC != getLocalRes)
{
return getLocalRes;
}
//查询歌单列表中是否已有该歌曲，已有的话，返回添加失败
int checkPlayListRes = checkIfSongExistsInPlayList(temp.filepath,playListName);
//歌单列表中已经有这首歌，重复添加了
if(DB_OP_SUCC == checkPlayListRes)
{
return DB_OP_ADD_REPEAT;
}
bool addRes;
//歌单列表中不存在该歌曲，添加该歌曲
QSqlQuery addSongToHistory(m_database);
QString addSongString = QString("insert into 'playlist_%1' values('%2','%3','%4','%5','%6','%7','%8')").
arg(inPutStringHandle(playListName)).
arg(inPutStringHandle(temp.filepath)).
arg(inPutStringHandle(temp.title)).
arg(inPutStringHandle(temp.singer)).
arg(inPutStringHandle(temp.album)).
arg(inPutStringHandle(temp.filetype)).
arg(inPutStringHandle(temp.size)).
arg(inPutStringHandle(temp.time));
addRes = addSongToHistory.exec(addSongString);
if(true == addRes)
{
return DB_OP_SUCC;
}
else
{
qDebug() << "数据库打开，添加失败！！！";
return DB_OP_ADD_FAILED;
}
}
else
{
qDebug() << "数据库无法打开，请重试！！！";
return DB_UNCONNECT;
}
}
else
{
//本地歌单中检查该歌曲失败
return checkLocalRes;
}
}
else
{
//该歌单检查是否存在失败
return checkRes;
}
}
//从新建歌单中删除歌曲，使用歌曲的路径值,输入数据必须有效，
int MusicDataBase::delMusicFromPlayList(const QString& filePath,const QString& playListName)
{
if(filePath.isEmpty() || playListName.isEmpty())