1.
现在工程(不是Src)上右键--Build Path--Add External Archives,选择驱动下的那个jar包,这是release版本,bin目录下的是debug版本。
示例在docs下的connector-j.html,里面有例子(其中的test是数据库名,换位自己的)。
1 import java.sql.Connection; 2 import java.sql.DriverManager; 3 import java.sql.SQLException; 4 Connection conn = null; 5 ... 6 try { 7 conn = 8 DriverManager.getConnection("jdbc:mysql://localhost/test?" + 9 "user=monty&password=greatsqldb");10 // Do something with the Connection11 ...12 } catch (SQLException ex) {13 // handle any errors14 System.out.println("SQLException: " + ex.getMessage());15 System.out.println("SQLState: " + ex.getSQLState());16 System.out.println("VendorError: " + ex.getErrorCode());17 }
2.可以直接在MySql控制台下创建数据库,也可以在通过执行 "\. 绝对路径名"。
“--”是注释符。
View Code
1 import java.sql.Connection; 2 import java.sql.DriverManager; 3 import java.sql.ResultSet; 4 import java.sql.SQLException; 5 import java.sql.Statement; 6 7 public class mysql { 8 9 /**10 * @param args11 */12 public static void main(String[] args) { // 多个try合并到一块,然后使用source --- format13 // TODO Auto-generated method stub14 //若是用到finally则需要把声明放在try外边15 Connection conn = null;16 Statement stmt = null;17 ResultSet rs = null;18 19 try {20 Class.forName("com.mysql.jdbc.Driver");// 后面若是加上".newInstance"则还需要加上几个抛出异常21 conn = DriverManager.getConnection("jdbc:mysql://localhost/mydata?"22 + "user=root&password=root");23 /*24 * java.sql.Statement; 不是com.mysql这个包; 二者不可以同时存在25 */26 stmt = conn.createStatement();27 rs = stmt.executeQuery("select * from info");28 29 while (rs.next()) {30 System.out.println(rs.getString("name"));31 32 }33 34 // Do something with the Connection35 } catch (ClassNotFoundException ex) {36 // handle any errors37 ex.printStackTrace();38 39 } catch (SQLException ex) {40 // TODO Auto-generated catch block41 System.out.println("SQLException: " + ex.getMessage());42 System.out.println("SQLState: " + ex.getSQLState());43 System.out.println("VendorError: " + ex.getErrorCode());44 } finally {45 try {46 if(null!= rs) {47 rs.close();48 rs = null;49 }50 51 if(null!= stmt) {52 stmt.close();53 stmt = null;54 }55 56 if(null!= conn) {57 conn.close();58 conn = null;59 }60 61 } catch(SQLException e) {62 e.printStackTrace();63 }64 }65 66 }67 68 }
3.