介绍
Apache Commons DbUtils
The Apache Commons DbUtils package is a set of Java utility classes for easing JDBC development.
<!-- https://mvnrepository.com/artifact/commons-dbutils/commons-dbutils -->
<dependency>
<groupId>commons-dbutils</groupId>
<artifactId>commons-dbutils</artifactId>
<version>1.6</version>
</dependency>
简单使用
package mybatis.cn.db;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
/**
* @Author yanyg
* @Date 2020/6/22 9:01
* @Descripetion admin
*/
public class DbUtil {
private static String url = "jdbc:mysql://127.0.0.1:3306/nabs_base?useUnicode=true&characterEncoding=utf8mb4&useSSL=false";
private static String username = "root";
private static String password = "root";
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
try {
conn = DriverManager.getConnection(url, username, password);
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
}
@RunWith(SpringRunner.class)
@SpringBootTest
public class DBUtilsTest {
@Test
public void testQuery() {
//创建连接
Connection conn = DbUtil.getConnection();
//创建SQL执行工具
QueryRunner queryRunner = new QueryRunner();
List<IdValidLogSum> list = null;
try {
//执行SQL查询,并获取结果
list = queryRunner.query(conn, "select * from person", new BeanListHandler<>(IdValidLogSum.class));
} catch (SQLException e) {
e.printStackTrace();
}
if (list != null) {
//输出查询结果
list.forEach(System.out::println);
}
//关闭数据库连接
DbUtils.closeQuietly(conn);
}
}