Qt使用SqlLite实现权限管理的示例代码
作者：从前，有个傻子........
本文主要介绍了Qt使用SqlLite实现权限管理的示例代码,管理员针对不同人员进行权限设定,具有一定的参考价值,感兴趣的可以了解一下
根据Sqlite轻量级数据库的优势，便于对于数据进行增删改查等操作。
本例模拟权限列表对不同界面进行权限管理，管理员针对不同人员进行权限设定，灵活性更高。
动态演示效果如下
考虑数据库数据安全，可进行哈希散列值计算进行加密，Qt提供QCryptographicHash类进行数据加密，本例中使用的加密函数为：
QString SqlHelper::encode(QString str) {
QString strPwdSha = "";
if (str == "") {
return "";
}
QByteArray bytePwd = str.toLatin1();
QByteArray bytePwdSha = QCryptographicHash::hash(bytePwd, QCryptographicHash::Sha256);
strPwdSha = bytePwdSha.toHex().toUpper();
return strPwdSha;
}
QString SqlHelper::encodePwd(QString str) {
if (str == "") {
return "";
}
QString endata = encode(str);
QString strdata = "";
for (int i = 0; i < endata.size(); i++) {
if (i % 4 == 0) {
strdata += endata[i];
}
}
return strdata + "SAP";
}初始化数据库：
void SqlHelper::connectDataBase() {
db = QSqlDatabase::addDatabase("QSQLITE", "sqlite1");// 驱动类型,连接名(默认)
db.setDatabaseName("DbData/data.db");
db.setHostName("localhost.");
db.setUserName("root");
db.setPassword("123456");
m_DbState = db.open();
}创建数据表：
void SqlHelper::IniSql() {
QSqlQuery query(db);
QString strCmd = QString("create table employee(employee_id varchar(64) primary key,"
"employee_name varchar(64),employee_pass varchar(32),employee_settingrole varchar(16),"
"employee_menurole varchar(16),employee_logrole varchar(16),employee_sex varchar(16))");
query.prepare(strCmd);
if (query.exec())
{
qDebug() << "----employee 数据库表：创建成功！";
insertData("admin", "root", "root123456", 1,1,1,"male");
}
else {
qDebug() << "----employee 数据表已经存在-----";
}
}插入数据：
bool SqlHelper::insertData(QString userid, QString username, QString userpass, int sflag, int mflag, int lflag, QString usersex) {
if (!m_DbState) {
return false;
}
QList<employeeInfo> list = queryAllInfo();
m_mutex.lock();
bool flag = false;
//qDebug() << "m_id: " << m_id;
QSqlQuery query(db);
QString str = QString("insert into employee values(?,?,?,?,?,?,?)");
query.prepare(str);
//query.bindValue(0, list.size() + 1);
query.bindValue(0, userid);
query.bindValue(1, username);
QString pass = encodePwd(userpass);
query.bindValue(2, pass);
QString setrole = userid;
setrole.append(QString::number(sflag));
setrole = encodeRole(setrole,RoleType::SettingRole);
query.bindValue(3, setrole);
QString mrole = userid;
mrole.append(QString::number(mflag));
mrole = encodeRole(mrole, RoleType::MenuRole);
query.bindValue(4, mrole);
QString lrole = userid;
lrole.append(QString::number(lflag));
lrole = encodeRole(lrole, RoleType::LogRole);
query.bindValue(5, lrole);
query.bindValue(6, usersex);
if (query.exec()) {
qDebug() << "插入数据成功----";
flag = true;
}
else {
qDebug() << "插入数据失败----";
}
m_mutex.unlock();
//qDebug() << "777777777777777777777777";
return flag;
}可使用结构体对数据信息进行封装：
struct employeeInfo {
QString employee_id = "";
QString employee_name;
QString employee_pass;
QString employee_settingrole;
QString employee_menurole;
QString employee_logrole;
QString employee_sex;
}; 数据库查询函数为：
QList<employeeInfo> SqlHelper::queryAllInfo() {
QList<employeeInfo> list;
if (!m_DbState) {
return list;
}
m_mutex.lock();
QSqlQuery query(db);
QString str = "select * from employee";
query.prepare(str);
if (query.exec()) {
while (query.next()) {
//qDebug() << "name---" << query.value(1).toString() << " age-" << query.value(2).toInt();
employeeInfo employee;
employee.employee_id = query.value(0).toString();
employee.employee_name = query.value(1).toString();
employee.employee_pass = query.value(2).toString();
employee.employee_settingrole = query.value(3).toString();
employee.employee_menurole = query.value(4).toString();
employee.employee_logrole = query.value(5).toString();
employee.employee_sex = query.value(6).toString();
list.append(employee);
}
}
m_mutex.unlock();
return list;
}
employeeInfo SqlHelper::queryOne(QString userid) {
employeeInfo employee;
if (!m_DbState) {
return employee;
}
m_mutex.lock();
QSqlQuery query(db);
QString str = "select * from employee where employee_id =?";
query.prepare(str);
query.addBindValue(userid);
if (query.exec()) {
while (query.next()) {
employee.employee_id = query.value(0).toString();
employee.employee_name = query.value(1).toString();
employee.employee_pass = query.value(2).toString();
employee.employee_settingrole = query.value(3).toString();
employee.employee_menurole = query.value(4).toString();
employee.employee_logrole = query.value(5).toString();
employee.employee_sex = query.value(6).toString();
}
}
m_mutex.unlock();
return employee;
}数据库更新数据函数为：
bool SqlHelper::updateData(QString userid, QString username, QString userpass, int sflag ,int mflag, int lflag, QString usersex) {
if (!m_DbState) {
return false;
}
QSqlQuery query(db);
QString str = "update employee set employee_name =?,employee_pass=?,"
"employee_settingrole=?,employee_menurole=?,employee_logrole=? , employee_sex = ? where employee_id =?";
query.prepare(str);
query.addBindValue(username);
QString ss = queryPass(userid);
m_mutex.lock();
bool flag = false;
if (ss == userpass) {
query.addBindValue(ss);
}
else {
userpass = encodePwd(userpass);
query.addBindValue(userpass);
}
QString nsr = userid;
nsr.append(QString::number(sflag));
nsr = encodeRole(nsr, RoleType::SettingRole);
query.addBindValue(nsr);
QString nmr = userid;
nmr.append(QString::number(mflag));
nmr = encodeRole(nmr, RoleType::MenuRole);
query.addBindValue(nmr);
QString nlr = userid;
nlr.append(QString::number(lflag));
nlr = encodeRole(nlr, RoleType::LogRole);
query.addBindValue(nlr);
query.addBindValue(usersex);
query.addBindValue(userid);
if (query.exec()) {
flag = true;
qDebug() << "更新成功---";
}
else {
flag = false;
qDebug() << "更新失败---";
}
m_mutex.unlock();
return flag;
}删除数据函数为：
bool SqlHelper::deleteData(QString userid) {
if (!m_DbState) {
return false;
}
employeeInfo one = queryOne(userid);
if (one.employee_id == "") {
qDebug() << "此人已删除----";
return false;
}
m_mutex.lock();
bool flag = false;
QSqlQuery query(db);
QString str = "delete from employee where employee_id=?";
query.prepare(str);
query.addBindValue(userid);
if (query.exec()) {
flag = true;
qDebug() << "删除成功---";
}
else {
flag = false;
qDebug() << "删除失败---";
}
m_mutex.unlock();
return flag;
}到此这篇关于Qt使用SqlLite实现权限管理的示例代码的文章就介绍到这了,更多相关Qt SqlLite权限管理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！