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当然,首先是去mysql的官方网站上,下载mysql的jar包。然后,将mysql相应的JDBC的jar包,
1.加载及注册JDBC驱动程序
Class.forName("com.mysql.jdbc.Driver");
Class.forName("com.mysql.jdbc.Driver").newInstance();
2.JDBC URL定义驱动程序与数据源之间的连接
标准语法:
::
MySQL的JDBCURL格式:
jdbc:mysql//[hostname][:port]/[dbname][?param1=value1][¶m2=value2]….
示例:jdbc:mysql://localhost:3306/sample_db?user=root&password=your_password
常见参数:
user用户名
password密码
autoReconnect联机失败,是否重新联机(true/false)
maxReconnect尝试重新联机次数
initialTimeout尝试重新联机间隔
maxRows传回最大行数
useUnicode是否使用Unicode字体编码(true/false)
characterEncoding何种编码(GB2312/UTF-8/…)
relaxAutocommit是否自动提交(true/false)
capitalizeTypeNames数据定义的名称以大写表示
3.建立连接对象
String url="jdbc:mysql://localhost:3306/sample_db?user=root&password=your_password";
Connection con = DriverManager.getConnection(url);
4.例子:
Java代码
importjava.sql.*;
publicclassConnMysql
{
publicstaticvoidmain(String[] args)
{
try
{
Class.forName("com.mysql.jdbc.Driver");
String url="jdbc:mysql://localhost:3306/test?user=root&password=root";
Connection con = DriverManager.getConnection(url);
Statement stmt = con.createStatement();
String query ="select * from person";
ResultSet rs=stmt.executeQuery(query);
while(rs.next())
{
System.out.println(rs.getString(2));
}
}
catch(ClassNotFoundException e)
{
e.printStackTrace();
}
catch(SQLException e)
{
e.printStackTrace();
}
}
}import java.sql.*;
public class ConnMysql
{
public static void main(String[] args)
{
try
{
Class.forName("com.mysql.jdbc.Driver");
String url="jdbc:mysql://localhost:3306/test?user=root&password=root";
Connection con = DriverManager.getConnection(url);
Statement stmt = con.createStatement();
String query = "select * from person";
ResultSet rs=stmt.executeQuery(query);
while(rs.next())
{
System.out.println(rs.getString(2));
}
}
catch (ClassNotFoundException e)
{
e.printStackTrace();
}
catch(SQLException e)
{
e.printStackTrace();
}
}
}
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