diff --git a/LibManageSystem_Server/addbook.cpp b/LibManageSystem_Server/addbook.cpp
index 8b6f072a0d6e1c3c83a1c2ee9e0ec1e7e15457f9..1475dfcf19d723ea8ac0c3b281d91d4dadcaa658 100644
--- a/LibManageSystem_Server/addbook.cpp
+++ b/LibManageSystem_Server/addbook.cpp
@@ -16,7 +16,7 @@ addbook::addbook(Operat* _db,QWidget *parent) :
                                      );
     QRegularExpression regExp1("[0-9-]+");
     ui->datelEdit->setValidator(new QRegularExpressionValidator(regExp1,this));
-    QRegularExpression regExp2("[0-9]+");
+    QRegularExpression regExp2("[0-9-]+");
     ui->numlEdit->setValidator(new QRegularExpressionValidator(regExp2,this));
     QRegularExpression regExp3("[0-9.]+");
     ui->pricelEdit->setValidator(new QRegularExpressionValidator(regExp3,this));
diff --git a/LibManageSystem_Server/mythread.cpp b/LibManageSystem_Server/mythread.cpp
index 3b04cfcd3f7ca5ee4b26f27e1377332763af0426..64e58d070de2531dfa57773d31a9849fc9925d2f 100644
--- a/LibManageSystem_Server/mythread.cpp
+++ b/LibManageSystem_Server/mythread.cpp
@@ -576,7 +576,7 @@ void MyThread::FirstTransfer()
         cur_msg=first_transfer_header + msg_tobe_sent;
         cur_msg=HammingEncode(cur_msg);
         socket->write(cur_msg);
-        socket->waitForReadyRead(500);
+        socket->waitForDisconnected(1000);
     }
     else{
         sentsize+=MAX_DAT_SIZE_PER_CLOCK;
@@ -613,7 +613,7 @@ void MyThread::ContinueTransfer()
         sentsize=totalsize;
         cur_msg=HammingEncode(cur_msg);
         socket->write(cur_msg);
-        socket->waitForReadyRead(500);
+        socket->waitForDisconnected(1000);
     }
     else{
         transfer_header += QString::number(sentsize+MAX_DAT_SIZE_PER_CLOCK).toStdString() + stopChar;
diff --git a/LibManageSystem_Server/mythread.h b/LibManageSystem_Server/mythread.h
index 2d23b80edc1e5a596ab5e6e4397560493af2db4a..d9c6b1c8eada474a97b32a69524b7936b19ab219 100644
--- a/LibManageSystem_Server/mythread.h
+++ b/LibManageSystem_Server/mythread.h
@@ -9,7 +9,7 @@
 #include <QTcpSocket>
 
 //每轮循环最大发送数据长度
-#define MAX_DAT_SIZE_PER_CLOCK 5000
+#define MAX_DAT_SIZE_PER_CLOCK 4000
 
 class MyThread : public QObject
 {
diff --git a/LibManageSystem_Server/tcpserver.cpp b/LibManageSystem_Server/tcpserver.cpp
index 89f72f38e78014aaa47174f9ae48f667175feb80..614179222ca04a9a8d79aea4780d78a8e7786959 100644
--- a/LibManageSystem_Server/tcpserver.cpp
+++ b/LibManageSystem_Server/tcpserver.cpp
@@ -342,7 +342,7 @@ void TcpServer::visitDataBase(int threadhandle)
         if(errorType==0)
             db_data[pos].first.second.message="此书已被预约";
         if(errorType==-1)
-            db_data[pos].first.second.message="您无权预约此书,请检查是否有书籍逾期未还,或是否已经预约其他书籍";
+            db_data[pos].first.second.message="您无权预约此书,请检查是否有书籍逾期未还,或是否已经预约其他书籍 ";
         break;
     case 6:
         //取消预约书籍操作
diff --git a/LibManagementSystem/communication_module.cpp b/LibManagementSystem/communication_module.cpp
index 63a327406cd486270d42b9d398093c6ea8181e7d..3f7cca17833437118552fbaf23226bdd6309cf94 100644
--- a/LibManagementSystem/communication_module.cpp
+++ b/LibManagementSystem/communication_module.cpp
@@ -121,9 +121,16 @@ void communication_module::receiveMsg()
 
     QByteArray _msg=socket->readAll();
     _msg=HammingDecode(_msg);
+    char backChar=_msg.back();
+
+    while(backChar=='\0'){
+        _msg.remove(_msg.size()-1,1);
+        backChar=_msg.back();
+    }
+
     qsizetype _msgSize=_msg.size(),start;
 
-    if(_msg[0]=='['&&_msg.size()==15){
+    if(_msg[0]=='['&&_msg.size()==14){
         send();
         emit process_update(20);
     }
@@ -141,7 +148,7 @@ void communication_module::receiveMsg()
         else
            cur_size=size_dat.toInt();
         start=_msg.indexOf(stopChar) + 1;
-        received_msg += _msg.sliced(start,_msgSize - start - 1);
+        received_msg += _msg.sliced(start,_msgSize - start);
 
         emit process_update(20+int(60*float(cur_size)/float(totalsize)));
 
diff --git a/LibManagementSystem/mainwindow.cpp b/LibManagementSystem/mainwindow.cpp
index cbaf8e88d47fe548dcfdce92bb94b10e35a690ef..12278248a70f537bb0465c61f95efa6f0ab887e5 100644
--- a/LibManagementSystem/mainwindow.cpp
+++ b/LibManagementSystem/mainwindow.cpp
@@ -30,8 +30,6 @@ MainWindow::MainWindow(QWidget *parent)
     u_i = new user_info(&current_user);
     re = new returnBook(&current_user);
 
-//    lo->setStyleSheet(QString("background-image:url(:images/clientRes/Login.png)"));
-
 //    current_user.account = QString("21311144");
 //    current_user.nickname = QString("哈哈哈名字再长也不怕会自动省略");
 //    current_user.telephone_number = QString("18320280001");