修复了数据库

database.cpp

@@ -86,7 +86,7 @@ bool DataBase::insertUsr(QString name, QString pwd)
 //根据name查找用户
 bool DataBase::findUsr(QString name)
 {
-    QString sql = QString("select from table_usr where name = :name;");
+    QString sql = QString("select * from table_usr where name = :name;");
     //打开数据库
     if(!db_.open())
     {
@@ -175,24 +175,25 @@ bool DataBase::match(QString name, QString pwd)
 void DataBase::insertCode(QString name, QString code, QString number)
 {
 
-    QString sql = QString("update table_usr set code=:code, number=:number where name=:name");
+    //QString sql = QString("update table_usr set code = :code, number = :number where name = :name");
-
+    QString sql = QString("update table_usr set code = '%1', number = '%2' where name = '%3'")
+                      .arg(code).arg(number).arg(name);
     // 1.打开数据
     if (!db_.open())
     {
-        qDebug() << "open:" << db_.lastError().text();
+        qDebug() << "insercode:" << db_.lastError().text();
     }
 
     // 2.执行sql
     QSqlQuery query(db_);
     query.prepare(sql);
-    query.bindValue(":code",QVariant(code));
+    /*query.bindValue(":code",QVariant(code));
     query.bindValue(":number",QVariant(number));
-    query.bindValue(":name",QVariant(name));
+    query.bindValue(":name",QVariant(name));*/
 
     if (!query.exec(sql))
     {
-        qDebug() << "insert:" << query.lastError().text();
+        qDebug() << "update:" << query.lastError().text();
     }
 
     //关闭数据库
@@ -235,7 +236,7 @@ QString DataBase::matchCode(QString name, QString code)
 
 void DataBase::resetCode(QString name)
 {
-    QString sql = QString("update table_usr set code=:code, number=:number where name=:name");
+    QString sql = QString("update table_usr set code = '000', number = '000' where name = '%1'").arg(name);
 
     // 1.打开数据
     if (!db_.open())
@@ -246,9 +247,9 @@ void DataBase::resetCode(QString name)
     // 2.执行sql
     QSqlQuery query(db_);
     query.prepare(sql);
-    query.bindValue(":code",QVariant("000"));
+    /*query.bindValue(":code",QVariant("000"));
     query.bindValue(":number",QVariant("000"));
-    query.bindValue(":name",QVariant(name));
+    query.bindValue(":name",QVariant(name));*/
 
     if (!query.exec(sql))
     {
@@ -257,3 +258,34 @@ void DataBase::resetCode(QString name)
 
 }
 
+QString DataBase::findCode(QString name)
+{
+    QString sql = QString("select * from table_usr where name = :name;");
+    QString code = "000";
+    //打开数据库
+    if(!db_.open())
+    {
+        qDebug() << "open fail" << db_.lastError().text();
+        exit(-1);
+    }
+
+    //执行插入操作
+    QSqlQuery query(db_);
+    query.prepare(sql);
+    query.bindValue(":name",QVariant(name));
+    query.exec();
+
+    //查询成功
+    if(query.next())
+    {
+        if(code == query.value(2).toString()) //获取取车码
+        {
+            return code;
+        }
+    }
+
+    db_.close();
+    return code;
+
+}
+

database.h

@@ -17,6 +17,8 @@ public:
     //根据name查找用户
     bool findUsr(QString name);
 
+    QString findCode(QString name);
+
     //匹配name和pwd
     bool match(QString name, QString pwd);
 

datamanager.cpp

@@ -51,6 +51,7 @@ void DataManager::recv_from_cln(QByteArray &data, QTcpSocket *sock)
                 QString code = json_data["data"].toString();
                 QString number = p_this->database->matchCode(name,code);
                 QString find_code = p_this->linedb->findCode(number);
+                qDebug() << "取车时的number和linecode：" << number << find_code;
                 p_this->linedb->resetState(number);
                 QByteArray data_build, data_encrypt;
                 data_build = p_this->protocol->data_maker(Protocol::CODE, QString("pick"), QString("server"),find_code);
@@ -63,9 +64,11 @@ void DataManager::recv_from_cln(QByteArray &data, QTcpSocket *sock)
             {
                 QString name = json_data["user"].toString();
                 QString number = p_this->linedb->choose();  //获取一个可用的车位编号
+                qDebug() << "获取到的可用车位编号是" << number;
                 //随机生成取车码
                 QString code = p_this->getRandomString(8);
                 //更新取车码
+                qDebug() << name << code << number;
                 p_this->database->insertCode(name,code,number);
                 p_this->linedb->setState(number);
 
@@ -76,6 +79,17 @@ void DataManager::recv_from_cln(QByteArray &data, QTcpSocket *sock)
                 p_this->server->sendToclient(sock, data_encrypt);
 
             }
+            else if(json_data["action"] == "update")
+            {
+                //登陆后自动获取取车码信息
+                QString name = json_data["user"].toString();
+                QString code = p_this->database->findCode(name);
+                QByteArray data_build, data_encrypt;
+                data_build = p_this->protocol->data_maker(Protocol::CODE, QString("update"), QString("server"),code);
+                qDebug() << data_build;
+                data_encrypt = p_this->protocol->data_encrypt(data_build);
+                p_this->server->sendToclient(sock, data_encrypt);
+            }
         }
         else if (json_data["type"] == "request")
         {

line.cpp

@@ -17,17 +17,15 @@ Line::Line()
     {
         //1.加载数据库驱动
         db_ = QSqlDatabase::addDatabase("QSQLITE", "linesql");
-        qDebug () << db_.connectionName();//打印连接名称
 
         //2.设置数据库名
         db_.setDatabaseName("line.db");
-        qDebug () << db_.databaseName();
     }
 
     //3.打开数据库
     if(db_.open())
     {
-        qDebug() << "open success";
+        qDebug() << "linedb open success";
     }
     else
     {
@@ -35,7 +33,7 @@ Line::Line()
         return;
     }
 
-    QString sql = "create table if not exists table_line(number varchar(10) primary key,state varchar(3));";
+    QString sql = "create table if not exists table_line(number varchar(10) primary key,linecode varchar(20),state varchar(3))";
 
     QSqlQuery query(db_);
     if (query.exec(sql))
@@ -44,8 +42,9 @@ Line::Line()
     }
 
     //测试用
-    sql = QString("insert into table_line values('%1', '%2')")
+    sql = QString("insert into table_line values('%1', '%2', '%3')")
-                      .arg('2')
+              .arg('3')
+              .arg("000")
               .arg("000");
     query.exec(sql);
     db_.close();
@@ -53,7 +52,7 @@ Line::Line()
 
 QString Line::findCode(QString number)
 {
-    QString sql = QString("select from table_line where name = :name;");
+    QString sql = QString("select * from table_line where number = :number");
     //打开数据库
     if(!db_.open())
     {
@@ -84,37 +83,50 @@ QString Line::findCode(QString number)
 
 QString Line::choose()
 {
-    QString sql = QString("select from table_line where state = :state limit 1;");
+    if(!db_.open())
+    {
+        qDebug() << "choose:" << db_.lastError().text();
+    }
+
+    QString sql = QString("select * from table_line where state = '%1' limit 1").arg("000");
     QSqlQuery query(db_);
     query.prepare(sql);
-    query.bindValue(":state",QVariant("000"));  //选择未占用的车位
+    //query.bindValue(":state",QVariant("000"));  //选择未占用的车位
     query.exec();
     if(query.next())
     {
         QString number = query.value(0).toString();
+        qDebug() << number << "序号";
+        db_.close();
         return number;
     }
+
+    qDebug() << "choose:" << db_.lastError().text();
     return "000";
 }
 
 
 void Line::setState(QString number)
 {
+    db_.open();
     QString sql = QString("update table_line set state = :state where number = :number");
     QSqlQuery query(db_);
     query.prepare(sql);
     query.bindValue(":number",QVariant(number));
     query.bindValue(":state",QVariant("111"));  //已占用的话为111
     query.exec();
+    db_.close();
 }
 
 void Line::resetState(QString number)
 {
+    db_.open();
     QString sql = QString("update table_line set state = :state where number = :number");
     QSqlQuery query(db_);
     query.prepare(sql);
     query.bindValue(":number",QVariant(number));
     query.bindValue(":state",QVariant("000"));   //状态初始值为000
     query.exec();
+    db_.close();
 }