怎样在eclipse开发环境中连接数据库并测试连接是否成功
1)eclipse开发环境里没有集成mysql的驱动,需要从以下地址下载连接驱动程序mysql-connector-java-XX-XX-XX.zip:
http://dev.mysql.com/downloads/connector/j
2)解压,只取文件mysql-connector-java-XX.XX.XX-bin.jar,将其引用到你需要连接mysql数据库的工程里,如:我在eclipsel里建了一个测试数据库连接的工程ConMysql。具体操作如下:
在工程ConMysql上点击右键
properties->Java Build Path->Libraries
点击Add External JARS...
选取解压后的mysql-connector-java-XX.XX.XX-bin.jar
2)驱动已经导入,下面我们来写一个程序验证一下
package test1;
import java.sql.*;
public class MysqlJdbc {
public static void main(String args[]) {
try {
Class.forName("com.mysql.jdbc.Driver"); //加载MYSQL JDBC驱动程序
//Class.forName("org.gjt.mm.mysql.Driver");
System.out.println("Success loading Mysql Driver!");
}
catch (Exception e) {
System.out.print("Error loading Mysql Driver!");
e.printStackTrace();
}
try {
Connection connect = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/test1","root","Aa-12345");
//连接URL为 jdbc:mysql//服务器地址/数据库名 ,后面的2个参数分别是登陆用户名和密码
System.out.println("Success connect Mysql server!");
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("select * from stu");
//user 为你表的名称
while (rs.next()) {
System.out.println(rs.getString("name"));
}
}
catch (Exception e) {
System.out.print("get data error!");
e.printStackTrace();
}
}
}
点击运行程序:出现以下代码则表示连接成功
Success loading Mysql Driver!
Success connect Mysql server!
npu(mysql里自己写入的内容)