完整java开发中JDBC连接数据库代码和步骤
时间：2021-07-01 10:21:17
帮助过：1人阅读
com.b510;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
*
* @author Hongten</br>
* @date 2012-7-16
*
*/
public class JDBCTest {
public static void main(String[] args) {
String driver = "com.mysql.jdbc.Driver"
;
String dbName = "spring"
;
String passwrod = "root"
;
String userName = "root"
;
String url = "jdbc:mysql://localhost:3308/" +
dbName;
String sql = "select * from users"
;
try {
Class.forName(driver);
Connection conn =
DriverManager.getConnection(url, userName,
passwrod);
PreparedStatement ps =
conn.prepareStatement(sql);
ResultSet rs =
ps.executeQuery();
while (rs.next()) {
System.out.println("id : " + rs.getInt(1) + " name : "
+ rs.getString(2) + " password : " + rs.getString(3
));
}
// 关闭记录集
if (rs !=
null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
// 关闭声明
if (ps !=
null) {
try {
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
// 关闭链接对象
if (conn !=
null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
完整java开发中JDBC连接数据库代码和步骤
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