使用runnable jar嵌入MS Access数据库

所以我的目标是制作一个可运行的jar子。 我使用swings创建了一个程序，使用MS Access数据库来获取记录。 所以，我使用绝对路径来引用数据库进行连接。 现在，我打算将这个可运行的jar分发给其他人。 所以我想最好的选择是在MS文件中嵌入MS Access数据库。 但我不知道该怎么做。 我应该在哪里将数据库保存在Project Explorer中？ 我应该使用相对路径等。任何forms的帮助都会很明显。

我发现了很多使用Derby数据库的教程，这些教程实现了相同但没有任何与Ms Access数据库有关的教程。 欢迎提出建议！

这是我的代码： –

import java.awt.*; import java.awt.event.*; import java.sql.*; import java.util.Vector; import javax.swing.*; import javax.swing.table.DefaultTableModel; public class r_search extends JFrame implements ActionListener { JFrame frame1; JLabel l0, l1, l2; JComboBox c1; JButton b1; Connection con; ResultSet rs, rs1; Statement st, st1; PreparedStatement pst; String ids; static JTable table; String[] columnNames = {"SECTION NAME", "REPORT NAME", "CONTACT", "LINK"}; String from; r_search() { l0 = new JLabel("Fetching Search Results..."); l0.setForeground(Color.blue); l0.setFont(new Font("Serif", Font.BOLD, 20)); l1 = new JLabel("Search"); b1 = new JButton("submit"); l0.setBounds(100, 50, 350, 40); l1.setBounds(75, 110, 75, 20); b1.setBounds(150, 150, 150, 20); b1.addActionListener(this); setTitle("Search Executive Reports :) "); setLayout(null); //setVisible(true); setSize(500, 500); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); add(l0); add(l1);; add(b1); try { Vector v = new Vector(); String url="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=" + "C:\\users\\ppreeti\\executive_db.accdb"; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); con=DriverManager.getConnection(url,"",""); /*con = DriverManager.getConnection("jdbc:oracle:thin:@mcndesktop07:1521:xe", "sandeep", "welcome");*/ st = con.createStatement(); rs = st.executeQuery("select index_name from Index1"); // Vector v = new Vector(); while (rs.next()) { ids = rs.getString(1); v.add(ids); } c1 = new JComboBox(v); c1.setBounds(150, 110, 150, 20); add(c1); st.close(); rs.close(); } catch (Exception e) { } setVisible(true); } public void actionPerformed(ActionEvent ae) { if (ae.getSource() == b1) { showTableData(); } } public void showTableData() { frame1 = new JFrame("Database Search Result"); frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame1.setLayout(new BorderLayout()); //TableModel tm = new TableModel(); DefaultTableModel model = new DefaultTableModel(); model.setColumnIdentifiers(columnNames); //DefaultTableModel model = new DefaultTableModel(tm.getData1(), tm.getColumnNames()); //table = new JTable(model); table = new JTable(); table.setModel(model); table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS); table.setFillsViewportHeight(true); JScrollPane scroll = new JScrollPane(table); scroll.setHorizontalScrollBarPolicy( JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); scroll.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); from = (String) c1.getSelectedItem(); //String textvalue = textbox.getText(); String uname = ""; String email = ""; String pass = ""; String cou = ""; try { /* pst = con.prepareStatement("select * from emp where UNAME='" + from + "'");*/ pst = con.prepareStatement("select distinct Section.Section_Name,Report.Report_Name,Report.Link,Contact.Contact_Name " + "FROM (( Section INNER JOIN Report ON Report.Section_ID=Section.Section_ID ) INNER JOIN Contact ON Contact.Contact_ID=Report.Contact_ID ) LEFT JOIN Metrics ON Metrics.Report_ID=Report.Report_ID " + " WHERE Section.Section_Name LIKE '%"+from+"%' OR Report.Report_Name LIKE '%"+from+"%' OR Metrics.Metric_Name LIKE '%"+from+"%' OR Contact.Contact_Name LIKE '%"+from+"%' "); ResultSet rs = pst.executeQuery(); int i = 0; while (rs.next()) { uname = rs.getString("Section_Name"); email = rs.getString("Report_Name"); pass = rs.getString("Contact_Name"); cou = rs.getString("Link"); model.addRow(new Object[]{uname, email, pass, cou}); i++; } if (i < 1) { JOptionPane.showMessageDialog(null, "No Record Found", "Error", JOptionPane.ERROR_MESSAGE); } if (i == 1) { System.out.println(i + " Record Found"); } else { System.out.println(i + " Records Found"); } } catch (Exception ex) { JOptionPane.showMessageDialog(null, ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE); } frame1.add(scroll); frame1.setVisible(true); frame1.setSize(1000, 400); } public static void main(String args[]) { new r_search(); } } 

Answer 1

以下使用Eclipse和JavaSE-1.7为我工作。 Eclipse在其Package Explorer中显示以下内容

我的项目文件夹中的[文件夹]和文件是

 [C:] [Users] [Gord] [workspace] [com.example.jartest] [src] [com] [example] [jartest] JarTestMain.java [resources] JarData.mdb 

JarTestMain.java中的Java代码是

 package com.example.jartest; import java.io.*; import java.nio.file.*; import java.sql.*; public class JarTestMain { public static void main(String[] args) { String mdbFileName = "JarData.mdb"; String tempDbPath = System.getenv("TEMP").replace('\\', '/') + "/" + mdbFileName; // retrieve .mdb database from the JAR file and save to %TEMP% folder InputStream strmIn = JarTestMain.class.getResourceAsStream("resources/" + mdbFileName); File f = new File(tempDbPath); try { Files.copy(strmIn, f.toPath(), StandardCopyOption.REPLACE_EXISTING); } catch (IOException e) { e.printStackTrace(); } // open the copy of the database in %TEMP% folder and read from its table String connectionString = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};" + "DBQ=" + tempDbPath; try (Connection con = DriverManager.getConnection(connectionString)) { Statement s = con.createStatement(); ResultSet rs = s.executeQuery("SELECT * FROM Table1"); while (rs.next()) { System.out.println(String.format( "%d: %s", rs.getInt("ID"), rs.getString("TextField"))); } rs.close(); con.close(); f.delete(); } catch (Exception e) { e.printStackTrace(); } } } 

在将项目导出到名为JarTest.jar的“Runnable JAR文件”之后，我能够在我的32位Windows测试机上运行它…

 "C:\Program Files\Java\jre7\bin\java" -jar JarTest.jar 

…在我的64位Windows开发机器上

 "C:\Program Files (x86)\Java\jre7\bin\java" -jar JarTest.jar