數據庫SQL代碼：
CREATE TABLE user_t (
id INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
name VARCHAR(50) NOT NULL DEFAULT '',
password VARCHAR(50) NOT NULL DEFAULT '',
email VARCHAR(50) NOT NULL DEFAULT '',
PRIMARY KEY (id)
) ENGINE=INNODB DEFAULT CHARSET=UTF8;
insert into user_t (id,name,password,email) values
('1','tom','123','[email protected]'),
('2','jack','456','[email protected]');
java代碼：
package JdbcPrictice;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class MyJdbc {
public static void main(String[] args) {
String sql="Select*from user_t";
Connection con=null;
Statement st=null;
ResultSet rs=null;
try {
Class.forName("com.mysql.jdbc.Driver");
System.out.println("數據庫驅動加載成功");
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/new_prictice","root","");
System.out.println("數據庫連接成功");
st=con.createStatement();
rs=st.executeQuery(sql);
while(rs.next()){
System.out.print(rs.getInt("id")+" ");
System.out.print(rs.getString("name")+" ");
System.out.print(rs.getString("password")+" ");
System.out.print(rs.getString("email")+" ");
System.out.println();
}
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
rs.close();
} catch (Exception e2) {
e2.printStackTrace();
}
try {
st.close();
} catch (Exception e2) {
e2.printStackTrace();
}
try {
con.close();
} catch (Exception e2) {
e2.printStackTrace();
}
}
}
}
