Java如何连接到MySQL数据库的

下载：mysql-connector-java-5.1.38.tar.gz

http://dev.mysql.com/downloads/connector/j/

tar zxvf
mysql-connector-java-5.1.38.tar.gz

解压后

[email protected]:~/Downloads$
cd ./mysql-connector-java-5.1.38/

[email protected]:~/Downloads/mysql-connector-java-5.1.38$
ls

build.xml COPYING
mysql-connector-java-5.1.38-bin.jar README.txt

CHANGES docs
README src

[email protected]:~/Downloads/mysql-connector-java-5.1.38$
sudo cp mysql-connector-java-5.1.38-bin.jar /home/tomcat/lib

[sudo] password for
zhousp:

Add External JARs

代码：

import
java.sql.*;

publicclass
JDBCTest {

publicstaticvoid
main(String[] args){

//
驱动程序名

String
driver
= "com.mysql.jdbc.Driver";

//
URL指向要访问的数据库名bookstore

String
url
= "jdbc:mysql://127.0.0.1:3306/bookstore";

//
MySQL配置时的用户名

String
user
= "root";

//
MySQL配置时的密码

String
password
= "password";

try
{

//
加载驱动程序

Class.forName(driver);

//
连续数据库

Connection
conn
= DriverManager.getConnection(url,
user,
password);

if(!conn.isClosed())

System.out.println("Succeeded
connecting to the Database!");

//
statement用来执行SQL语句

Statement
statement
= conn.createStatement();

//
要执行的SQL语句

String
sql
= "select
* from books";

//
结果集

ResultSet
rs
= statement.executeQuery(sql);

System.out.println("-----------------");

System.out.println("执行结果如下所示:");

System.out.println("-----------------------------------------------");

System.out.println("
ISBN"
+ "\t"
+ "
author"+
"\t"
+ "
bookname"+
"\t"
+ "
bookname");

System.out.println("-----------------------------------------------");

String
name
= null;

while(rs.next())
{

//
选择ISBN这列数据

name
= rs.getString("ISBN");

//System.out.println(name);

//
首先使用ISO-8859-1字符集将name解码为字节序列并将结果存储新的字节数组中。

//
然后使用GB2312字符集解码指定的字节数组

name
= new
String(name.getBytes("ISO-8859-1"),"GB2312");

//
输出结果

System.out.println(name
+ "\t"
+ rs.getString("author")
+ "\t"
+ rs.getString("bookname")
+ "\t"
+ "\t"
+ rs.getString("price"));

}

rs.close();

conn.close();

}
catch(ClassNotFoundException
e)
{

System.out.println("Sorry,can`t
find the Driver!");

e.printStackTrace();

}
catch(SQLException
e)
{

e.printStackTrace();

}
catch(Exception
e)
{

e.printStackTrace();

}

}

}

输出：

Succeeded
connecting to the Database!

-----------------

执行结果如下所示:

-----------------------------------------------

ISBN
author bookname bookname

-----------------------------------------------

123456 zhousp java 23.40

234567 zhousp C++ 34.60