diff --git a/LibManagementSystem/communication_module.cpp b/LibManagementSystem/communication_module.cpp
index 61be5e331926272c8fbacc7802178e1249c50492..63a327406cd486270d42b9d398093c6ea8181e7d 100644
--- a/LibManagementSystem/communication_module.cpp
+++ b/LibManagementSystem/communication_module.cpp
@@ -141,7 +141,7 @@ void communication_module::receiveMsg()
         else
            cur_size=size_dat.toInt();
         start=_msg.indexOf(stopChar) + 1;
-        received_msg += _msg.sliced(start,_msgSize - start);
+        received_msg += _msg.sliced(start,_msgSize - start - 1);
 
         emit process_update(20+int(60*float(cur_size)/float(totalsize)));
 
diff --git a/LibManagementSystem/mainwindow.cpp b/LibManagementSystem/mainwindow.cpp
index 7356a9c51e66f24f607425c20f5e07777c095ba2..cbaf8e88d47fe548dcfdce92bb94b10e35a690ef 100644
--- a/LibManagementSystem/mainwindow.cpp
+++ b/LibManagementSystem/mainwindow.cpp
@@ -7,6 +7,7 @@ MainWindow::MainWindow(QWidget *parent)
 {
     ui->setupUi(this);
     this->setFixedSize(800,600);
+    this->setWindowTitle("图书管理系统");
 
     //创建图片名称->图片指针映射哈希表
     pixmap=new QHash<QString,QPixmap*>;