java 使用mysql --- jdbc链接示例

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class jdbc {
public static void main (String[] args) {

Connection conn = null;
String url = "jdbc:mysql://xx.xx.xx.xx:3306/xx?"  
+ "useUnicode=true&characterEncoding=UTF8";// -------- 指定要读取的数据库地址和database

try {
Class.forName("com.mysql.jdbc.Driver");
System.out.println("成功加载MySQL驱动程序");
conn = DriverManager.getConnection(url, "user", "pwd");   //------- 数据库的用户和密码
Statement stmt = conn.createStatement();

String sql = "select * from Students";     //------- 要使用的查找、插入或更新等语句
ResultSet getInfo = stmt.executeQuery(sql);
            //----如果update,insert的更新语句，应该用statement的execute()方法

while (getInfo.next()) {
Logger.print(getInfo.getString(1) + ":" + getInfo.getString(2));  //---- 遍历读取的数据并打印
}
} catch (SQLException e) {
Logger.print("MySQL操作错误");
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}