Java连接MySQL数据库

import java.sql.*;

public class JDBCDemo {
	public static void main(String[] args) {
		String user = "root";//用户名
		String password = "****";//密码
		String url = "jdbc:mysql://localhost:3306/student";//数据库名
		String driver = "com.mysql.jdbc.Driver";//数据库驱动
		String tableName = "studentinfo";//数据库表名
		String sqlstr;
		Connection con = null;
		Statement stmt = null;
		ResultSet rs = null;

		try {
			Class.forName(driver);
			con = DriverManager.getConnection(url,user,password);
			stmt = con.createStatement();
			
			//往数据库插入数据
			sqlstr = "insert into " + tableName + " values(001,'tanzhenyu','male','GIS')";
			stmt.executeUpdate(sqlstr);
			
			//查询数据库数据
			sqlstr = "select * from " + tableName;
			rs = stmt.executeQuery(sqlstr);
			
			ResultSetMetaData rsmd = rs.getMetaData();
			int j = rsmd.getColumnCount();
			for(int i = 0; i < j; i++) {
				System.out.print(rsmd.getCatalogName(i + 1));
				System.out.print("\t");
			}
			System.out.println();
			while(rs.next()) {
				for(int i = 0; i < j; i++) {
					System.out.print(rs.getString(i + 1));
					System.out.print("\t");
				}
				System.out.println();
			}
			
		}
		catch(ClassNotFoundException e1) {
			System.out.println(e1.toString());	
		}
		catch(SQLException e2) {
			System.out.println(e2.toString());
		}
		finally {
			try {
				if(rs != null) rs.close();
				if(stmt != null) stmt.close();
				if(con != null) con.close();
			}
			catch(SQLException e) {
				System.out.println(e.toString());
			}
		}
	}
}