1.首先,导入驱动mysql-connector-java-5.1.6-bin.jar。
2.创建数据库链接类DBConnection:
public class DBConnection {
private static final String DRIVER_CLASS=”com.mysql.jdbc.Driver”;
private static final String DATABASE_URL=”jdbc:mysql://localhost:3306/数据库名?user=root&password=sa&useUnicode=true&characterEncoding=GB2312″;
public static Connection getConnection(){
Connection con = null ;
try {
Class.forName(DRIVER_CLASS);
con = DriverManager.getConnection(DATABASE_URL);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return con;
}
public static void closeResultSet(ResultSet rs){
if(rs != null){
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void closeStatement(Statement stmt){
if(stmt != null){
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void closePreparedStatement(PreparedStatement pstmt){
if(pstmt != null){
try {
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void closeConnection(Connection con){
if(con != null){
try {
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
3.创建测试类TestMySqlJDBC:
public class TestMySqlJDBC {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Connection con = DBConnection.getConnection();
if(con==null){
System.out.println(“con is null “);
}else{
System.out.println(“con is not null”);
}
try {
Statement stmt = con.createStatement();
String sql = “select * from student”;
ResultSet rs = stmt.executeQuery(sql);
while(rs.next()){
System.out.println(rs.getString(“stuName”));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}