JDBCTemplate小练习(一)
使用了Druid数据库连接池
import com.alibaba.druid.pool.DruidDataSourceFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import javax.sql.DataSource;
import java.io.InputStream;
import java.util.Properties;
public class JDBCTemplate {
public static void main(String[] args) throws Exception {
//创建配置文件对象
Properties p = new Properties();
//类加载器获得输入流
ClassLoader classLoader = c2p0demo.class.getClassLoader();
System.out.println(classLoader);
InputStream resourceAsStream = classLoader.getResourceAsStream("druid.properties");
System.out.println(resourceAsStream);
//加载配置文件
p.load(resourceAsStream);
System.out.println(p);
//获取连接池对象
DataSource dataSource = DruidDataSourceFactory.createDataSource(p);
JdbcTemplate jb = new JdbcTemplate(dataSource);
String sql="update account set balance = 200 where id = ?";
int update = jb.update(sql, 1);
System.out.println(update);
}
}
Druid配置文件详情:
driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/db01?serverTimezone=UTC&characterEncoding=utf-8&useSSL=false
username=root
password=root
initialSize=5
maxActive=10
maxWait=3000
minIdle=3
validationQuery:SELECT 1
testWhileIdle:true
testOnBorrow:false
testOnReturn:false
如果出现以下错误请使用以上的配置文件:
严重: maxIdle is deprecated,严重: testWhileIdle is true, validationQuery not set,Druid连接池连接MSQL报错处理