Java 用jdbc连接数据库
准备
安装mysql
下载 mysql-connector-java-5.1.40-bin.jar驱动包
步骤
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创建jdbc项目
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导入mysql-connector-java-5.1.40-bin.ja包
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创建配置文件
jdbc.properties
user=root password=1230 driverClass=com.mysql.jdbc.Driver jdbcUrl=jdbc:mysql:///atguigu |
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代码
import java.io.IOException; import java.io.InputStream; import java.util.Properties; import java.sql.DriverManager; import java.sql.SQLException; import public public JDBCTools() { } public Connection Properties properties = new Properties(); InputStream inStream = JDBCTools.class.getClassLoader() .getResourceAsStream("jdbc.properties"); properties.load(inStream); String user = properties.getProperty("user"); String password = properties.getProperty("password"); String driverClass = properties.getProperty("driverClass"); String jdbcUrl = properties.getProperty("jdbcUrl"); conn = (Connection) DriverManager.getConnection(jdbcUrl,user,password); return } public System.out.println(getConnection()); } } |