本节概要
在上一节中我们实现了图书类别维护的功能，那么这一节主要将实现图书添加的功能。
图书添加界面
使用swing实现图书添加界面，改变BookAddPanel.java的代码如下：
package bookManageSystem.view;
import bookManageSystem.bean.BookTypeBean;
import bookManageSystem.dao.BookDao;
import bookManageSystem.dao.BookTypeDao;
import bookManageSystem.tools.ComponentTools;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
public class BookAddPanel extends JPanel implements ActionListener {
private ComponentTools componentTools = new ComponentTools();
private Box totalVBox, funcationHBox, nameAndAuthorHBox, sexAndPriceHBox, typeHBox, descriptionHBox, buttonHBox;
private JLabel bookAddFuncationLabel, bookNameLabel, bookAuthorLabel, authorSexLabel, bookTypeLabel,
descriptionLabel, bookPriceLabel;
private JTextField bookNameTextField, bookAuthorTextField, bookPriceTextField;
private JTextArea descriptionTextArea;
private JRadioButton femaleRadioButton, maleRadioButton;
private ButtonGroup radioButtonGroup;
private JComboBox bookTypeComboBox;
private JButton addButton, resetButton;
BookAddPanel() {
// 为图书添加面板添加控件内容
this.add(createBookAddBox());
// 批量为按钮设置图标
componentTools.setIcons(new JButton[]{addButton, resetButton}, new String[]{"src/bookManageSystem/images/add" +
".png", "src/bookManageSystem/images/reset.png"});
// 图书类别查询SQL
String getBookTypeSQL = "select * from tb_booktype";
// 获取所有的图书类别数据
List bookTypeList = new BookTypeDao().getRecordsDataBySql(getBookTypeSQL);
// 获取所有的图书类别名称
String[] typeNames = new String[bookTypeList.size()];
for (int i = 0; i < bookTypeList.size(); i++) {
BookTypeBean bookTypeBean = (BookTypeBean) bookTypeList.get(i);
typeNames[i] = bookTypeBean.getBookTypeName();
}
// 初始化下拉列表框中的选项
componentTools.addComboBoxItems(bookTypeComboBox, typeNames);
// 为按钮注册事件监听器
addButton.addActionListener(this);
resetButton.addActionListener(this);
}
/**
* 图书添加面板的内容控件
*
* @return 返回一个Box
*/
private Box createBookAddBox() {
totalVBox = Box.createVerticalBox();
funcationHBox = Box.createHorizontalBox();
bookAddFuncationLabel = new JLabel("图书添加功能");
bookAddFuncationLabel.setFont(new Font("微软雅黑", Font.BOLD, 30));
funcationHBox.add(bookAddFuncationLabel);
totalVBox.add(funcationHBox);
totalVBox.add(Box.createVerticalStrut(30));
nameAndAuthorHBox = Box.createHorizontalBox();
bookNameLabel = new JLabel("图书名称：");
bookNameTextField = new JTextField(10);
bookAuthorLabel = new JLabel("图书作者：");
bookAuthorTextField = new JTextField(10);
nameAndAuthorHBox.add(bookNameLabel);
nameAndAuthorHBox.add(Box.createHorizontalStrut(40));
nameAndAuthorHBox.add(bookNameTextField);
nameAndAuthorHBox.add(Box.createHorizontalStrut(40));
nameAndAuthorHBox.add(bookAuthorLabel);
nameAndAuthorHBox.add(Box.createHorizontalStrut(40));
nameAndAuthorHBox.add(bookAuthorTextField);
totalVBox.add(nameAndAuthorHBox);
totalVBox.add(Box.createVerticalStrut(30));
sexAndPriceHBox = Box.createHorizontalBox();
authorSexLabel = new JLabel("作者性别：");
Box sexHBox = Box.createHorizontalBox();
femaleRadioButton = new JRadioButton("女");
maleRadioButton = new JRadioButton("男");
sexHBox.add(femaleRadioButton);
sexHBox.add(maleRadioButton);
radioButtonGroup = new ButtonGroup();
radioButtonGroup.add(femaleRadioButton);
radioButtonGroup.add(maleRadioButton);
bookPriceLabel = new JLabel("图书价格：");
bookPriceTextField = new JTextField(5);
sexAndPriceHBox.add(authorSexLabel);
nameAndAuthorHBox.add(Box.createHorizontalStrut(50));
sexAndPriceHBox.add(sexHBox);
nameAndAuthorHBox.add(Box.createHorizontalStrut(100));
sexAndPriceHBox.add(bookPriceLabel);
nameAndAuthorHBox.add(Box.createHorizontalStrut(10));
sexAndPriceHBox.add(bookPriceTextField);
totalVBox.add(sexAndPriceHBox);
totalVBox.add(Box.createVerticalStrut(30));
typeHBox = Box.createHorizontalBox();
bookTypeLabel = new JLabel("图书类别：");
// 实例化下拉列表框控件
bookTypeComboBox = new JComboBox();
typeHBox.add(bookTypeLabel);
typeHBox.add(Box.createHorizontalStrut(40));
typeHBox.add(bookTypeComboBox);
totalVBox.add(typeHBox);
totalVBox.add(Box.createVerticalStrut(30));
descriptionHBox = Box.createHorizontalBox();
descriptionLabel = new JLabel("图书描述：");
descriptionTextArea = new JTextArea(10, 40);
descriptionHBox.add(descriptionLabel);
descriptionHBox.add(Box.createHorizontalStrut(40));
descriptionHBox.add(descriptionTextArea);
totalVBox.add(descriptionHBox);
totalVBox.add(Box.createVerticalStrut(30));
buttonHBox = Box.createHorizontalBox();
addButton = new JButton("添加");
resetButton = new JButton("重置");
buttonHBox.add(addButton);
buttonHBox.add(Box.createHorizontalStrut(80));
buttonHBox.add(resetButton);
totalVBox.add(buttonHBox);
return totalVBox;
}
@Override
public void actionPerformed(ActionEvent e) {
}
}
运行项目，登录成功后，跳转到“图书管理”菜单下的“图书添加”菜单项的图书添加功能界面，视图如下：
图书添加功能
接着就是实现图书添加功能和重置按钮的功能。
在actionPerformed方法内添加如下代码，即实现该界面添加按钮的功能：
// “添加”按钮的事件处理
if (e.getSource() == addButton) {
// 获取用户输入的图书名称
String name = bookNameTextField.getText();
// 获取用户输入的图书作者名字
String author = bookAuthorTextField.getText();
// 获取用户选择的图书作者的性别
String sex = "";
if (maleRadioButton.isSelected()) {
sex = maleRadioButton.getText();
} else if (femaleRadioButton.isSelected()) {
sex = femaleRadioButton.getText();
}
// 获取用户输入的图书价格
String price = bookPriceTextField.getText();
// 获取用户选择的图书类别
String type = (String) bookTypeComboBox.getModel().getSelectedItem();
// 获取用户输入的图书描述
String description = descriptionTextArea.getText();
// 组装图书类别SQL
String bookTypeSQL = "select * from tb_booktype where btName='" + type + "';";
// 根据用户选择的图书类别进行查询
List bookTypeList = new BookTypeDao().getRecordsDataBySql(bookTypeSQL);
// 获取查询结果
BookTypeBean bookTypeBean = (BookTypeBean) bookTypeList.get(0);
// 获取用户选择的图书类别的id号
int bookTypeId = bookTypeBean.getBookTypeId();
// 组装新增SQL语句
String sql =
"insert into tb_book(bBookName, bAuthor, bSex, bPrice, bBookDescription, btId) values('" + name + "'," +
"'" + author + "','" + sex + "'," + price + ",'" + description + "'," + bookTypeId + ");";
// 执行SQL并获取操作结果
boolean isOK = new BookDao().dataChange(sql);
// 对添加结果进行判断
if (isOK) {
// 添加成功则重置用户输入，并弹出提示框
componentTools.reset(bookNameTextField, bookAuthorTextField, bookPriceTextField, descriptionTextArea);
componentTools.reset(radioButtonGroup);
componentTools.reset(bookTypeComboBox);
JOptionPane.showMessageDialog(null, "添加成功！");
} else {
// 添加失败也弹出提示框
JOptionPane.showMessageDialog(null, "添加失败！");
}
}
运行项目，输入信息，点击“添加”按钮，添加成功的效果如下：
接着是实现重置按钮的功能，很简单。
在actionPerformed方法继续添加如下代码，是重置按钮的处理事件：
// “重置”按钮的事件处理
if (e.getSource() == resetButton) {
// 重置用户输入和选择
componentTools.reset(bookNameTextField, bookAuthorTextField, bookPriceTextField, descriptionTextArea);
componentTools.reset(radioButtonGroup);
componentTools.reset(bookTypeComboBox);
}
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来源：CSDN
作者：二木成林
链接：https://blog.csdn.net/cnds123321/article/details/103878835