Java数据库操作大全

1.提取单条记录

//import java.sql.*;Connection con=null;Statement stmt=null;ResultSet %%6=null;try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");String url="jdbc:odbc:"+%%1;con=DriverManager.getConnection(url,%%2,%%3);stmt=con.createStatement();stmt.executeUpdate(%%4);%%6=stmt.executeQuery(%%5);%%7}catch(Exception e){e.printStackTrace();}finally{try {try {stmt.close();con.close();} catch (SQLException e) {e.printStackTrace();}} catch (Exception e) {e.printStackTrace();}}

2.单值比较

//import java.sql.*;ResultSet rs;String strurl="jdbc:odbc:%%1";Connection con=NULL;Statement stmt=null;try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");con=DriverManager.getConnection(url,%%2,%%3);stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);rs=stmt.executeQuery(%%2);rs.next();int %%3=rs.getInt("%%3");if(%%3==%%4){%%5}}catch (Exception e) {e.printStackTrace();}finally{try {if(rs!=null){rs.close();stmt.close();con.close();} catch (Exception e) {e.printStackTrace();}}

3.显示表格

//import java.awt.*;//import javax.swing.*;//import java.sql.*;//import javax.swing.table.*;String[] colHeads=%%4;Connection con=null;Statement stmt=null;ResultSet %%6=null;try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");String url="jdbc:odbc:"+%%1;con=DriverManager.getConnection(url,%%2,%%3);stmt=con.createStatement();%%6=stmt.executeQuery("SELECT count(*) as au_count from "+%%5);%%6.next();int iCount=rs.getInt("au_count");Object[][] data=new Object[iCount][];int i=0;%%6=stmt.executeQuery("SELECT * from "+%%5);while(%%6.next()){data[i]=new Object[iCount];data[i][0]=%%6.getString("au_fname");data[i][1]=%%6.getString("Phone");data[i][2]=%%6.getString("City");i++;}JTable table=new JTable(data,colHeads);JScrollPane jsp=new JScrollPane(table);getContentPane().add(jsp);}catch(Exception e){e.printStackTrace();}finally{if(con!=null){try {%%6.close();stmt.close();con.close();} catch (SQLException e) {e.printStackTrace();}}}

4.操作表格

//import java.awt.*;//import java.swing.*;//import java.sql.*;//import javax.swing.table.*;JTable table;Object[][] data;JButton jb;JScrollPane jsp;JComboBox jcb;JCheckBox jchb;jcb=new JComboBox();jchb=new JCheckBox();jcb.addItem("男");jcb.addItem("女");jb = new JButton("dsfasd");String[] colHeads = { "id", "性别","是否" };Connection con = null;Statement stmt = null;ResultSet rs = null;try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");String url = "jdbc:odbc:ghost";con = DriverManager.getConnection(url);stmt = con.createStatement();rs = stmt.executeQuery("SELECT count(id) as count from AUTHORS");rs.next();int iCount = rs.getInt("count");data = new Object[iCount][];int i = 0;rs = stmt.executeQuery("SELECT * from AUTHORS");while (rs.next()) {data[i] = new Object[iCount];data[i][0] = rs.getString("id");data[i][1] = rs.getString("gender");data[i][2] = rs.getString("isMember");i++;}table = new JTable();DefaultTableModel dt = new DefaultTableModel(data, colHeads); //table.setModel(dt);jsp = new JScrollPane(table);getContentPane().add(jsp, BorderLayout.CENTER);TableColumn tc = table.getColumn("性别");TableColumn tc2=table.getColumn("是否");tc.setCellEditor(new DefaultCellEditor(jcb));tc2.setCellEditor(new DefaultCellEditor(jchb));} catch (Exception e) {e.printStackTrace();} finally {if (con != null) {try {rs.close();stmt.close();} catch (SQLException e) {e.printStackTrace();}}}this.setSize(300, 300);this.setLocation(200, 210);JPanel jp2 = new JPanel();this.getContentPane().add(jp2, BorderLayout.NORTH);JPanel jp = new JPanel();jp2.add(jp);jp.add(new JTextField(10));this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setVisible(true);

5.数值范围查询

//import java.sql.*;Connection con;Statement stmt;ResultSet rs;int min = Integer.parseInt(jcb1.getSelectedItem().toString());int max = Integer.parseInt(jcb2.getSelectedItem().toString());String sql = "select count(*) as pro_count from ProPrice where price between "+ min + " and " + max;try {con = DriverManager.getConnection(url);stmt = con.createStatement();rs = stmt.executeQuery(sql);rs.next();int iCount = rs.getInt("pro_count");Object[][] data = new Object[iCount][];rs = stmt.executeQuery("select * from ProPrice where price between "+ min + " and " + max);int i = 0;while (rs.next()) {data[i] = new Object[3];data[i][0] = rs.getString("id");data[i][1] = rs.getString("name");data[i][2] = rs.getString("price");i++;}DefaultTableModel dt = new DefaultTableModel(data, colHeads);table.setModel(dt);} catch (Exception e1) {e1.printStackTrace();} finally {try {rs.close();con.close();stmt.close();} catch (SQLException e1) {e1.printStackTrace();}}

6.关闭时关闭连接

//import java.sql.*;addWindowListener(new WindowAdapter{public void windowClosing(WindowEvent wevent){if(stmt!=null){try {stmt.close();con.close();} catch (Exception e) {e.printStackTrace();}}}

7.执行命令

//import java.sql.*;Connection conn;PreparedStatement pst=null;try {conn=DriverManager.getConnection(url);pst=conn.prepareStatement("Insert Into grade(%%1) Values (?)");pst.setInt(1,%%2);//pst.setInt(2,%%2);pst.addBatch();pst.executeBatch();} catch (SQLException e){e.printStackTrace();}finally{pst.close();conn.close();}8.Oracle8/8i/9i数据库（thin模式）//import java.sql.*;Class.forName("oracle.jdbc.driver.OracleDriver").newInstance(); String url="jdbc:oracle:thin:@localhost:1521:orcl"; //orcl为数据库的SID String user="test"; String password="test"; Connection conn= DriverManager.getConnection(url,user,password);  Statement stmtNew=conn.createStatement();

9.DB2数据库

//import java.sql.*;Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance(); String url="jdbc:db2://localhost:5000/sample"; //sample为你的数据库名 String user="admin"; String password=""; Connection conn= DriverManager.getConnection(url,user,password);  Statement stmtNew=conn.createStatement();

10.Sql Server7.0/2000数据库

//import java.sql.*;Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance(); //String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=db2"; //7.0、2000String url="jdbc:sqlserver://localhost:1433;DatabaseName=db2"; //2005//db2为数据库名String user="sa"; String password=""; Connection conn= DriverManager.getConnection(url,user,password);  Statement stmtNew=conn.createStatement();

11.Sybase数据库

//import java.sql.*;Class.forName("com.sybase.jdbc.SybDriver").newInstance(); String url =" jdbc:sybase:Tds:localhost:5007/myDB";//myDB为你的数据库名 Properties sysProps = System.getProperties(); SysProps.put("user","userid"); SysProps.put("password","user_password"); Connection conn= DriverManager.getConnection(url, SysProps);  Statement stmtNew=conn.createStatement();

12.Informix数据库

//import java.sql.*;Class.forName("com.informix.jdbc.IfxDriver").newInstance(); String url = "jdbc:informix-sqli://123.45.67.89:1533/myDB:INFORMIXSERVER=myserver; user=testuser;password=testpassword"; //myDB为数据库名 Connection conn= DriverManager.getConnection(url);  Statement stmtNew=conn.createStatement();

13.MySQL数据库

//import java.sql.*;//Class.forName("org.gjt.mm.mysql.Driver").newInstance();Class.forName("com.mysql.jdbc.Driver");//String url ="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1";String url ="jdbc:mysql://localhost:3306/myDB";//myDB为数据库名 Connection conn= DriverManager.getConnection(url,"root","root");  Statement stmtNew=conn.createStatement();

14.PostgreSQL数据库

//import java.sql.*;Class.forName("org.postgresql.Driver").newInstance();String url ="jdbc:postgresql://localhost/myDB" //myDB为数据库名String user="myuser";String password="mypassword";Connection conn= DriverManager.getConnection(url,user,password);Statement stmtNew=conn.createStatement();

15.access数据库直连用ODBC的

//import java.sql.*;Class.forName("sun.jdbc.odbc.JdbcOdbcDriver") ; String url="jdbc:odbc:Driver={MicroSoft Access Driver (*.mdb)};DBQ="+application.getRealPath("/Data/ReportDemo.mdb"); Connection conn = DriverManager.getConnection(url,"sa",""); Statement stmtNew=conn.createStatement();

16.程序计时

long time1=System.currentTimeMillis();long time2=System.currentTimeMillis();long interval=time2-time1;

17.延时

try {Thread.sleep(Integer.Parse(%%1));} catch(InterruptedException e) {e.printStackTrace();}

18.连接Excel文件

//import java.sql.*;Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");String url = "jdbc:odbc:driver={Microsoft Excel Driver (*.xls)};DBQ=D:\\myDB.xls"; // 不设置数据源String user="myuser";String password="mypassword";Connection conn= DriverManager.getConnection(url,user,password);Statement stmtNew=conn.createStatement();