DBAccess.java
package database;
import java.sql. * ;
/**
* @author Administrator
*
*/
public class DBAccess {
private Connection m_conn;
private Statement m_stmt;
String driver = " com.microsoft.jdbc.sqlserver.SQLServerDriver " ;
String url = " jdbc:microsoft:sqlserver://localhost:1433;databasename=sc " ;
String uName = " sa " ;
String uPwd = " sa " ;
/**
*
*/
public DBAccess() {
this .setDriver(driver);
this .setConnection(url, uName, uPwd);
}
public DBAccess(String driver, String url, String userName, String userPWD) {
try {
m_conn = DriverManager.getConnection(url, userName, userPWD);
m_stmt = m_conn.createStatement();
} catch (SQLException e) {
e.printStackTrace();
}
}
public boolean setDriver(String driver) {
try {
Class.forName(driver);
return true ;
} catch (Exception e) {
e.printStackTrace();
}
return false ;
}
public boolean setConnection(String url, String userName, String userPWD) {
try {
m_conn = DriverManager.getConnection(url, userName, userPWD);
m_stmt = m_conn.createStatement();
return true ;
} catch (Exception e) {
e.printStackTrace();
}
return false ;
}
// 处理查询
public ResultSet sendQuery(String sql) {
try {
ResultSet m_rs = m_stmt.executeQuery(sql);
return m_rs;
} catch (SQLException e) {
e.printStackTrace();
return null ;
}
}
// 处理数据更新
public int sendUpdate(String sql) {
try {
return m_stmt.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
return - 1 ;
}
}
// 测试程序
public static void main(String[] arg) {
DBAccess db = new DBAccess();
String sql = " select * from Student " ;
ResultSet rs = db.sendQuery(sql);
try {
if (rs != null ) {
while (rs.next()) {
System.out.println(rs.getInt( " Sno " ) + " "
+ rs.getString( " Sname " ));
}
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
package database;
import java.sql. * ;
/**
* @author Administrator
*
*/
public class DBAccess {
private Connection m_conn;
private Statement m_stmt;
String driver = " com.microsoft.jdbc.sqlserver.SQLServerDriver " ;
String url = " jdbc:microsoft:sqlserver://localhost:1433;databasename=sc " ;
String uName = " sa " ;
String uPwd = " sa " ;
/**
*
*/
public DBAccess() {
this .setDriver(driver);
this .setConnection(url, uName, uPwd);
}
public DBAccess(String driver, String url, String userName, String userPWD) {
try {
m_conn = DriverManager.getConnection(url, userName, userPWD);
m_stmt = m_conn.createStatement();
} catch (SQLException e) {
e.printStackTrace();
}
}
public boolean setDriver(String driver) {
try {
Class.forName(driver);
return true ;
} catch (Exception e) {
e.printStackTrace();
}
return false ;
}
public boolean setConnection(String url, String userName, String userPWD) {
try {
m_conn = DriverManager.getConnection(url, userName, userPWD);
m_stmt = m_conn.createStatement();
return true ;
} catch (Exception e) {
e.printStackTrace();
}
return false ;
}
// 处理查询
public ResultSet sendQuery(String sql) {
try {
ResultSet m_rs = m_stmt.executeQuery(sql);
return m_rs;
} catch (SQLException e) {
e.printStackTrace();
return null ;
}
}
// 处理数据更新
public int sendUpdate(String sql) {
try {
return m_stmt.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
return - 1 ;
}
}
// 测试程序
public static void main(String[] arg) {
DBAccess db = new DBAccess();
String sql = " select * from Student " ;
ResultSet rs = db.sendQuery(sql);
try {
if (rs != null ) {
while (rs.next()) {
System.out.println(rs.getInt( " Sno " ) + " "
+ rs.getString( " Sname " ));
}
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
下面罗列了各种数据库使用JDBC连接的方式,可以作为一个手册使用。
1、Oracle8/8i/9i数据库(thin模式)
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);
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);
2、DB2数据库
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);
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);
3、Sql Server7.0/2000数据库
Class.forName(
'
com.microsoft.jdbc.sqlserver.SQLServerDriver
'
).newInstance();
String url = ' jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb ' ;
// mydb为数据库
String user = ' sa ' ;
String password = '' ;
Connection conn = DriverManager.getConnection(url,user,password);
String url = ' jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb ' ;
// mydb为数据库
String user = ' sa ' ;
String password = '' ;
Connection conn = DriverManager.getConnection(url,user,password);
4、Sybase数据库
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);
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);
5、Informix数据库
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);
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);
6、MySQL数据库
Class.forName(
'
org.gjt.mm.mysql.Driver
'
).newInstance();
//
或者Class.forName('com.mysql.jdbc.Driver');
String url = ' jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1 '
// myDB为数据库名
Connection conn = DriverManager.getConnection(url);
String url = ' jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1 '
// myDB为数据库名
Connection conn = DriverManager.getConnection(url);
7、PostgreSQL数据库
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);
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);
8、access数据库直连用ODBC的
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, '' , '' );
Statement stmtNew = conn.createStatement() ;
String url = ' jdbc:odbc:Driver={MicroSoft Access Driver (*.mdb)};DBQ= ' + application.getRealPath( ' /Data/ReportDemo.mdb ' );
Connection conn = DriverManager.getConnection(url, '' , '' );
Statement stmtNew = conn.createStatement() ;