IntelliJ IDEA+JFormDesigner+MSSQLSERVER actual combat 2. Establish windows form applications and JDBC packaging and data access.
First, generate a new project form in IntelliJ IDEA, and add new->java class JDBC package and data access new class JdbcUtils.java under the project's src
The class JdbcUtils code is as follows:
package jdbcutils;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
//import java.lang.reflect.Field;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
//import java.sql.ResultSetMetaData;
import java.sql.SQLException;
//import java.util.ArrayList;
//import java.util.HashMap;
import java.util.List;
//import java.util.Map;
// import java.utiljdbcutils .Map;
import java.util.Properties;
public class JdbcUtils
{
// 表示定义数据库的用户名
private final String USERNAME = "sa";
// 定义数据库的密码
private final String PASSWORD = "3201319";
// 定义数据库的驱动信息
private final String DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
// 定义访问数据库的地址
private final String URL = "jdbc:sqlserver://localhost:1433;DatabaseName=bhjs";
// 定义数据库的链接
private Connection connection;
// 定义sql语句的执行对象
private PreparedStatement pstmt;
// 定义查询返回的结果集合
private ResultSet resultSet;
public void JdbcUtils()
{
try
{
Class.forName(DRIVER);
// System.out.println("注册驱动成功!!");
}
catch (Exception e)
{
// TODO: handle exception
}
}
// 定义获得数据库的链接
public Connection getConnection()
{
try
{
connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
// System.out.println("数据库连接成功");
}
catch (Exception e)
{
// TODO: handle exception
}
return connection;
}
public ResultSet findMoreResult(String sql, List params) throws SQLException //查询返回多行值
{
int index = 1;
ResultSet resultSet;
pstmt = connection.prepareStatement(sql);
if (params != null && !params.isEmpty())
{
for (int i = 0; i < params.size(); i++)
{
pstmt.setObject(index++, params.get(i));
}
}
resultSet = pstmt.executeQuery();
return resultSet;
}
public boolean updateByPreparedStatement(String sql, List params) throws SQLException //更新
{
boolean flag = false;
int result = -1;// 表示当用户执行添加删除和修改的时候所影响数据库的行数
pstmt = connection.prepareStatement(sql);
int index = 1;
// 填充sql语句中的占位符
if (params != null && !params.isEmpty())
{
for (int i = 0; i < params.size(); i++)
{
pstmt.setObject(index++, params.get(i));
}
}
result = pstmt.executeUpdate();
flag = result > 0 ? true : false;
return flag;
}
public void releaseConn() //释放连接
{
if (resultSet != null)
{
try
{
resultSet.close();
}
catch (SQLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (pstmt != null)
{
try
{
pstmt.close();
}
catch (SQLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (connection != null)
{
try
{
connection.close();
}
catch (SQLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}2. Create a new JFormDesigner window form1
Click tab form1.jfd to add a new window control, 5 buttons JButton and a JTable control
Rewrite the form1.java code as follows:
package com.company;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
//import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import javax.swing.table.DefaultTableModel;
import javax.swing.JTable;
import jdbcutils.JdbcUtils;
/**
* @author a
*/
public class form1 extends JFrame {
public form1() {
initComponents();
}
private void button1MouseClicked(MouseEvent e) {
// TODO add your code here
///
Connection con1 = null;
PreparedStatement statement = null;
ResultSet res = null;
List parm1=null;
try {
JdbcUtils JdbcUtils2 =new JdbcUtils();
JdbcUtils2.JdbcUtils();
con1=JdbcUtils2.getConnection();
String sql = "select * from info_jqmc ";//查询test表
res=JdbcUtils2.findMoreResult(sql,parm1); //调用jdbc封装类中 查询函数
Vector line1;
Vector rows,columnNames;
rows = new Vector();
columnNames = new Vector();
columnNames.add("jqmc");
columnNames.add("jqip");
while(res.next()){
line1 = new Vector();
line1.add(res.getString("jqmc"));
line1.add(res.getString("jqip"));
// label1.setText(res.getString("jqmc"));
rows.add(line1);
}
//定义JTable的对象
DefaultTableModel model = new DefaultTableModel(rows, columnNames);
table1.setModel( model);
//table1.updateUI() ;
// scrollPane1.validate();
// table1.invalidate();
//table.addMouseListener(new MouseAdapter() {
// @Override
// public void mouseClicked(MouseEvent e) {
// int selectRows=table.getSelectedRows().length;// 取得用户所选行的行数
// DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
// int selectedRowIndex = table.getSelectedRow(); // 取得用户所选单行
// textField.setText((String)table.getValueAt(selectedRowIndex,0));
// textField_1.setText((String)table.getValueAt(selectedRowIndex,1));
// 进行相关处理
// }
// });
//jScrollPane = new JScrollPane(table);
// jScrollPane.setToolTipText("");
// jScrollPane.setBounds(43, 23, 534, 308);
// frmJdbc.getContentPane().add(jScrollPane);
} catch (Exception e1) {
// TODO: handle exception
e1.printStackTrace();
}finally{
try {
if(res != null) res.close();
if(statement != null) statement.close();
if(con1 != null) con1.close();
} catch (Exception e2) {
// TODO: handle exception
e2.printStackTrace();
}
}
/
}
private void initComponents() {
// JFormDesigner - Component initialization - DO NOT MODIFY //GEN-BEGIN:initComponents
button1 = new JButton();
button2 = new JButton();
button3 = new JButton();
button4 = new JButton();
button5 = new JButton();
scrollPane1 = new JScrollPane();
table1 = new JTable();
//======== this ========
setTitle("\u6570\u636e\u8bbf\u95ee");
Container contentPane = getContentPane();
//---- button1 ----
button1.setText("\u67e5\u8be2");
button1.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
button1MouseClicked(e);
}
});
//---- button2 ----
button2.setText("\u65b0\u589e");
//---- button3 ----
button3.setText("\u5220\u9664");
//---- button4 ----
button4.setText("\u4fdd\u5b58");
//---- button5 ----
button5.setText("\u9000\u51fa");
//======== scrollPane1 ========
{
scrollPane1.setViewportView(table1);
}
GroupLayout contentPaneLayout = new GroupLayout(contentPane);
contentPane.setLayout(contentPaneLayout);
contentPaneLayout.setHorizontalGroup(
contentPaneLayout.createParallelGroup()
.addGroup(contentPaneLayout.createSequentialGroup()
.addGroup(contentPaneLayout.createParallelGroup()
.addGroup(contentPaneLayout.createSequentialGroup()
.addGap(77, 77, 77)
.addComponent(scrollPane1, GroupLayout.PREFERRED_SIZE, 501, GroupLayout.PREFERRED_SIZE))
.addGroup(contentPaneLayout.createSequentialGroup()
.addGap(57, 57, 57)
.addComponent(button1)
.addGap(32, 32, 32)
.addComponent(button2)
.addGap(27, 27, 27)
.addComponent(button3)
.addGap(31, 31, 31)
.addComponent(button4)
.addGap(31, 31, 31)
.addComponent(button5)))
.addGap(56, 56, 56))
);
contentPaneLayout.setVerticalGroup(
contentPaneLayout.createParallelGroup()
.addGroup(contentPaneLayout.createSequentialGroup()
.addGap(37, 37, 37)
.addComponent(scrollPane1, GroupLayout.PREFERRED_SIZE, 351, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED, 41, Short.MAX_VALUE)
.addGroup(contentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(button1)
.addComponent(button2)
.addComponent(button3)
.addComponent(button4)
.addComponent(button5))
.addGap(21, 21, 21))
);
pack();
setLocationRelativeTo(getOwner());
// JFormDesigner - End of component initialization //GEN-END:initComponents
///
Connection con = null;
PreparedStatement statement = null;
ResultSet res = null;
List parm1=null;
try {
JdbcUtils JdbcUtils1 =new JdbcUtils();
JdbcUtils1.JdbcUtils();
con=JdbcUtils1.getConnection();
String sql = "select * from info_jqmc ";//查询test表
res=JdbcUtils1.findMoreResult(sql,parm1); //调用jdbc封装类中 查询函数
Vector line1;
Vector rows,columnNames;
rows = new Vector();
columnNames = new Vector();
columnNames.add("jqmc");
columnNames.add("jqip");
while(res.next()){
line1 = new Vector();
line1.add(res.getString("jqmc"));
line1.add(res.getString("jqip"));
rows.add(line1);
}
//定义JTable的对象
DefaultTableModel model = new DefaultTableModel(rows, columnNames);
table1.setModel( model);
//table1.updateUI() ;
// scrollPane1.validate();
// table1.invalidate();
//table.addMouseListener(new MouseAdapter() {
// @Override
// public void mouseClicked(MouseEvent e) {
// int selectRows=table.getSelectedRows().length;// 取得用户所选行的行数
// DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
// int selectedRowIndex = table.getSelectedRow(); // 取得用户所选单行
// textField.setText((String)table.getValueAt(selectedRowIndex,0));
// textField_1.setText((String)table.getValueAt(selectedRowIndex,1));
// 进行相关处理
// }
// });
//jScrollPane = new JScrollPane(table);
// jScrollPane.setToolTipText("");
// jScrollPane.setBounds(43, 23, 534, 308);
// frmJdbc.getContentPane().add(jScrollPane);
} catch (Exception e1) {
// TODO: handle exception
e1.printStackTrace();
}finally{
try {
if(res != null) res.close();
if(statement != null) statement.close();
if(con != null) con.close();
} catch (Exception e2) {
// TODO: handle exception
e2.printStackTrace();
}
}
/
}
// JFormDesigner - Variables declaration - DO NOT MODIFY //GEN-BEGIN:variables
private JButton button1;
private JButton button2;
private JButton button3;
private JButton button4;
private JButton button5;
private JScrollPane scrollPane1;
private JTable table1;
// JFormDesigner - End of variables declaration //GEN-END:variables
}
Rewrite the code of Main.java (program entry) as follows:
package com.company;
import javax.swing.JFrame;
public class Main {
private JFrame frame;
public static void main(String[] args) {
// write your code here
try {
form1 form11 = new form1(); //定义我们用JFormDesigner 生成的窗口 form1的实例
form11.setVisible(true);
// form1.setBounds(400, 200, 636, 561);
//form1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//form1.getContentPane().setLayout(null);
//form1.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
So far, the definition of JFormDesigner window and JDBC packaging and data access are basically realized. Click run to compile and the following window will appear
The complete code has been uploaded.....
Download: Link: https://pan.baidu.com/s/1UqFMfB5gsKrlmDHZ6oUk0w Extraction code: 2ct3
MS SQLSERVER example database recovery database file download:
Link: https://pan.baidu.com/s/1ODmQhipjNhqLx_q0RtLkfA Extraction code: e4pg
If you cannot connect to MSSQLSERVER
1. Set the password of the sa of SQLSERVER, and set the SQLSERVER to log in as sa.
At the same time, the server properties are set according to the following figure
2. Please proceed as follows, enter SQLSERVER configuration management tool -> TCP/IP -> IP address, change the IP address to 127.0.0.1 and port to 1433
