做完添加借阅信息功能

.idea/libraries/mysql_connector_j_8_4_0__2_.xml

@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="mysql-connector-j-8.4.0 (2)">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/lib/mysql-connector-j-8.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

.idea/libraries/mysql_connector_j_8_4_0__3_.xml

@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="mysql-connector-j-8.4.0 (3)">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/lib/mysql-connector-j-8.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

.idea/libraries/mysql_connector_j_8_4_0__4_.xml

@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="mysql-connector-j-8.4.0 (4)">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/lib/mysql-connector-j-8.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

.idea/libraries/mysql_connector_j_8_4_0__5_.xml

@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="mysql-connector-j-8.4.0 (5)">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/lib/mysql-connector-j-8.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

.idea/libraries/mysql_connector_j_8_4_0__6_.xml

@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="mysql-connector-j-8.4.0 (6)">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/lib/mysql-connector-j-8.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

src/com/msksbr/MainFrm/MainFrm.java

@@ -31,7 +31,6 @@ public class MainFrm extends JFrame {
         setJMenuBar(menuBar);
         setDefaultCloseOperation(EXIT_ON_CLOSE);
         setSize(960, 720);
-        setVisible(true);
 
         String countData = "本馆共藏书" + getCount("books") + "本，共记录学生信息" + getCount("students") + "条，已借阅" + getCount("rents") + "本书，人均借阅" + (double) getCount("rents") / getCount("students") + "本";
         countMessage.setText(countData);
@@ -45,6 +44,7 @@ public class MainFrm extends JFrame {
 
         setLocation();
         initDialogs();
+        setVisible(true);
     }
 
 

src/com/msksbr/MainFrm/MenuBar.java

@@ -1,6 +1,7 @@
 package com.msksbr.MainFrm;
 
 import com.msksbr.MainFrm.MenuItemDiaog.Adder.BookAdder;
+import com.msksbr.MainFrm.MenuItemDiaog.Adder.RentAdder;
 import com.msksbr.MainFrm.MenuItemDiaog.Adder.StudentAdder;
 import com.msksbr.MainFrm.MenuItemDiaog.AuthorDIalog;
 import com.msksbr.MainFrm.MenuItemDiaog.SearchDIalog;
@@ -62,6 +63,11 @@ public class MenuBar extends JMenuBar {
             }
         });
         JMenuItem rentAdd = new JMenuItem("添加借阅信息");
+        rentAdd.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                new RentAdder();
+            }
+        });
         addMenu.add(bookAdd);
         addMenu.add(studentAdd);
         addMenu.add(rentAdd);

src/com/msksbr/MainFrm/MenuItemDiaog/Adder/RentAdder.form

@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="com.msksbr.MainFrm.MenuItemDiaog.Adder.RentAdder">
+  <grid id="cbd77" binding="contentPane" layout-manager="BorderLayout" hgap="0" vgap="0">
+    <constraints>
+      <xy x="54" y="54" width="264" height="145"/>
+    </constraints>
+    <properties/>
+    <border type="none"/>
+    <children>
+      <grid id="94766" layout-manager="FlowLayout" hgap="5" vgap="5" flow-align="1">
+        <constraints border-constraint="South"/>
+        <properties/>
+        <border type="none"/>
+        <children>
+          <grid id="9538f" layout-manager="GridLayoutManager" row-count="1" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+            <margin top="0" left="0" bottom="0" right="0"/>
+            <constraints/>
+            <properties/>
+            <border type="none"/>
+            <children>
+              <component id="e7465" class="javax.swing.JButton" binding="buttonOK">
+                <constraints>
+                  <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="3" anchor="0" fill="1" indent="0" use-parent-layout="false"/>
+                </constraints>
+                <properties>
+                  <text value="添加"/>
+                </properties>
+              </component>
+            </children>
+          </grid>
+        </children>
+      </grid>
+      <grid id="e3588" layout-manager="BorderLayout" hgap="0" vgap="0">
+        <constraints border-constraint="Center"/>
+        <properties/>
+        <border type="none"/>
+        <children>
+          <grid id="e3beb" layout-manager="GridLayoutManager" row-count="2" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+            <margin top="0" left="0" bottom="0" right="0"/>
+            <constraints border-constraint="West"/>
+            <properties/>
+            <border type="none"/>
+            <children>
+              <component id="9c1af" class="javax.swing.JLabel">
+                <constraints>
+                  <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="0" anchor="8" fill="0" indent="0" use-parent-layout="false"/>
+                </constraints>
+                <properties>
+                  <text value="请输入书号："/>
+                </properties>
+              </component>
+              <component id="c9df7" class="javax.swing.JLabel">
+                <constraints>
+                  <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="0" anchor="8" fill="0" indent="0" use-parent-layout="false"/>
+                </constraints>
+                <properties>
+                  <text value="请输入学号："/>
+                </properties>
+              </component>
+            </children>
+          </grid>
+          <grid id="10667" layout-manager="GridLayoutManager" row-count="2" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
+            <margin top="0" left="0" bottom="0" right="0"/>
+            <constraints border-constraint="Center"/>
+            <properties/>
+            <border type="none"/>
+            <children>
+              <grid id="60ed0" layout-manager="FlowLayout" hgap="5" vgap="5" flow-align="0">
+                <constraints>
+                  <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+                </constraints>
+                <properties/>
+                <border type="none"/>
+                <children>
+                  <component id="5f80a" class="javax.swing.JTextField" binding="bIDField">
+                    <constraints/>
+                    <properties>
+                      <columns value="15"/>
+                    </properties>
+                  </component>
+                </children>
+              </grid>
+              <grid id="d1af9" layout-manager="FlowLayout" hgap="5" vgap="5" flow-align="0">
+                <constraints>
+                  <grid row="1" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+                </constraints>
+                <properties/>
+                <border type="none"/>
+                <children>
+                  <component id="26f68" class="javax.swing.JTextField" binding="sIDField">
+                    <constraints/>
+                    <properties>
+                      <columns value="15"/>
+                    </properties>
+                  </component>
+                </children>
+              </grid>
+            </children>
+          </grid>
+        </children>
+      </grid>
+    </children>
+  </grid>
+</form>

src/com/msksbr/MainFrm/MenuItemDiaog/Adder/RentAdder.java

@@ -0,0 +1,93 @@
+package com.msksbr.MainFrm.MenuItemDiaog.Adder;
+
+import com.msksbr.LoginFrm.ScreenSize;
+import com.msksbr.SQL.Connector;
+
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class RentAdder extends JDialog {
+    private JPanel contentPane;
+    private JButton buttonOK;
+    private JTextField bIDField;
+    private JTextField sIDField;
+    private int bID;
+    private int sID;
+    private Connector bConnector;
+    private Connector sConnector;
+    private String bookSearchSQL;
+    private String studentSearchSQL;
+    private String updateSQL;
+    private ResultSet bIDResult;
+    private ResultSet sIDResult;
+
+    public RentAdder() {
+        try {
+            bConnector = new Connector();
+            sConnector = new Connector();
+        } catch (ClassNotFoundException e) {
+            throw new RuntimeException(e);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        setContentPane(contentPane);
+        setModal(true);
+        getRootPane().setDefaultButton(buttonOK);
+        setTitle("添加借阅信息");
+
+        buttonOK.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                onOK();
+            }
+        });
+        pack();
+        setResizable(false);
+        setLocation();
+        setVisible(true);
+    }
+
+    private void onOK() {
+        // 在此处添加您的代码
+        try {
+            this.bID = Integer.valueOf(bIDField.getText());
+            this.sID = Integer.valueOf(sIDField.getText());
+            searchSQLMaker();
+            updateSQLMaker();
+            bIDResult = bConnector.executeQuery(bookSearchSQL);
+            sIDResult = sConnector.executeQuery(studentSearchSQL);
+            if (!bIDResult.next()) {
+                JOptionPane.showMessageDialog(this, "未找到该书信息", "错误", JOptionPane.WARNING_MESSAGE);
+            } else if (!sIDResult.next()) {
+                JOptionPane.showMessageDialog(this, "未找到学生信息", "错误", JOptionPane.WARNING_MESSAGE);
+            } else {
+                if (bIDResult.getInt("borrowed_by") == 0) {
+                    bConnector.executeUpdate(updateSQL);
+                } else {
+                    JOptionPane.showMessageDialog(this, "该书已借出", "错误", JOptionPane.WARNING_MESSAGE);
+                }
+            }
+        } catch (NumberFormatException e) {
+            JOptionPane.showMessageDialog(this, "请输入一个整数", "错误", JOptionPane.ERROR_MESSAGE);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+
+        dispose();
+    }
+
+    public void setLocation() {
+        setLocation(new ScreenSize().width / 2 - getWidth() / 2, new ScreenSize().height / 2 - getHeight() / 2);
+    }
+
+    private void searchSQLMaker() {
+        this.bookSearchSQL = "SELECT * FROM books WHERE book_id =" + this.bID + ";";
+        this.studentSearchSQL = "SELECT * FROM students WHERE student_id =" + this.sID + ";";
+    }
+
+    private void updateSQLMaker() {
+        this.updateSQL = "UPDATE books SET borrowed_by = " + this.sID + " WHERE book_id =" + this.bID + ";";
+    }
+}