def get_connection():conn=connection_pool.getconn()while not is_connection_alive(conn):conn=connection_pool.getconn()return conn#将连接对象放回连接池 def release_connection(conn):connection_pool.putconn(conn)#使用连接对象...
check,conn).tag('conn-check')class MyListener(stomp.ConnectionListener):def_init_(self,conn):self.conn=conn def on_error(self,frame):print('received an error"%s"'%frame.body)def on_message(self,frame):print('received a ...
第一种形式的特征如下:dblink_ora_connect(conn_name,server_name,service_name,user_name,password,port,asDBA)其中:conn_name 指定链接的名称。server_name 指定主机的名称。service_name 指定服务的名称。user_name 指定用于连接到...
mysql_real_connect(&conn,lindorm_addr,lindorm_user,lindorm_password,database,lindorm_mysql_port,NULL,0)){ printf("Failed to connect to database:Error:%s",mysql_error(&conn));exit(1);} else { printf("conect lindorm ...
异步事件,执行结果在注册的事件回调函数中返回,返回事件EVENT_GAP_CONN_PARAM_UPDATE 函数原型 int ble_stack_connect_param_update(int16_t conn_handle,conn_param_t*param)输入参数 args description conn_handle 连接句柄,在连接...
准备五张表:conn_random:delta格式表 conn_random_parquet:parquet格式表 conn_optimize:经过OPTIMIZE的表,主要是Compaction conn_zorder_only_ip:ZORDER BY(src_ip,dst_ip)conn_zorder:ZORDER BY(src_ip,src_port,dst_ip,dst_port)...
lindorm_conn){ printf("Can't connect to Lindorm Server.Errorcode:%s",mysqli_error($lindorm_conn));exit;} else { printf("connect to Lindorm successfully");}/创建表$create_table="create table if not exists user_test(id int,...
2:The instance is connected over an internal network.0:The instance is connected over the Internet.zk_conn_addrs The zk_conn_addrs supports the following:conn_addr_port-(Optional)The number of the port over which Phoenix ...
IMAP收信代码示例 Python3:#-*-coding:utf-8-*-import imaplib import email from imapclient import imap_utf7 def get_folders():#获取邮箱文件夹列表 list_folder=[]list_folder_org=conn.list()for i in list_folder_org[1]:list_...
读取响应体 BufferedReader br=new BufferedReader(new InputStreamReader(conn.getErrorStream()));String line;while((line=br.readLine())!null){ responseBuilder.append(line);} br.close();} System.out.println("File uploaded ...
创建一个大对象 函数 Oid lo_creat(PGconn*conn,int mode);创建一个新的大对象。其返回值是分配给这个新大对象的 OID 或者 InvalidOid(0)表示失败。mode 自PostgreSQL 8.1 就不再使用且会被忽略。但是,为了和以前的发行兼容,它最好被...
本文提供RPA 服务端API的Python语言调用示例与Java语言调用示例。配置访问凭证 重要 调用接口前,需要...} else { throw new RuntimeException(conn.getResponseCode()+":"+conn.getResponseMessage());} } catch(Exception e){ throw new ...
重要 人物写真生成API调用需"申请体验"并通过后才可使用,否则API调用将返回错误状态码。通义万相 说明 支持的领域/任务:aigc 人物写真2.0支持人物形象训练lora模式和人物形象免训练...获取响应码 int responseCode=conn.getResponseCode...
代码如下:def create_table():logging.info('Start creating the table')with pymysql.connect(*DB_CONFIG)as conn:with conn.cursor()as cursor:try:cursor.execute(CREATE_TABLE_SQL)conn.commit()logging.info('Table creation ...
}/测试,只建一条连接,写入所有数据@Test public void testWriteDBByOneConn()throws Exception{ Connection conn=DBConn.getConnection();Statement stat=conn.createStatement();for(int i=0;i;i+){ writeDBByOneConn(i,stat);} conn....
本文将介绍如何使用 HikariCP 连接池、MySQL Connector/J 和 OceanBase 数据库构建一个应用程序,实现基本的数据库操作,包括创建表、插入、删除、更新和查询数据等。...您已安装 JDK 1.8 和 Maven。您已安装 Eclipse。说明 本文档运行代码...
BufferedReader in=new BufferedReader(new InputStreamReader(conn.getInputStream()));读取URL的响应。String result=";String line=";while((line=in.readLine())!null){ result+line;} System.out.println("-auth result-");System.out...
获取URLConnection对象对应的输出流 out=new PrintWriter(conn.getOutputStream());发送请求参数 out.print(body);flush输出流的缓冲 out.flush();定义BufferedReader输入流来读取URL的响应 InputStream is;HttpURLConnection httpconn=...
本文将介绍如何使用 Druid 连接池、MySQL Connector/J 和 OceanBase 数据库构建一个应用程序,实现基本的数据库操作,包括创建表、插入数据、更新数据、删除数据、查询数据和删除表等。...您已安装 JDK 1.8 和 Maven。您已安装 Eclipse。...
本文将介绍如何使用 DBCP 连接池、MySQL Connector/J 和 OceanBase 数据库构建一个应用程序,实现基本的数据库操作,包括创建表、插入、删除、更新和查询数据等。...您已安装 JDK 1.8 和 Maven。您已安装 Eclipse。说明 本文档运行代码使用的...
public TlsSniSocketFactory(HttpsURLConnection conn){ this.conn=conn;}@Override public Socket createSocket()throws IOException { return null;}@Override public Socket createSocket(String host,int port)throws IOException,...
public TlsSniSocketFactory(HttpsURLConnection conn){ this.conn=conn;}@Override public Socket createSocket()throws IOException { return null;}@Override public Socket createSocket(String host,int port)throws IOException,...
} private HttpURLConnection openHttpDnsConnection(WXRequest request,String path,OnHttpListener listener,String reffer){ HttpURLConnection conn=null;URL url=null;try { url=new URL(path);conn=(HttpURLConnection)url....
MySqlConnection conn=new MySqlConnection(connStr);try { Console.WriteLine("Connecting to MySQL.");conn.Open();string sql="show databases;MySqlCommand cmd=new MySqlCommand(sql,conn);MySqlDataReader rdr=cmd.ExecuteReader();...
Connection conn=new HikariDataSource(config).getConnection();PreparedStatement drop_table_data_test=conn.prepareStatement("drop table data_test");Statement stmt=conn.createStatement();try { drop_table_data_test.execute();}...
let mut conn=pool.get_conn().unwrap();创建表 conn.query_drop(r"create table if not exists user_test(id int,name varchar,age int,primary key(id))").expect("Failed to create table");执行以下命令构建Rust项目。cargo build 执行...
conn=conn.connection with dbapi_conn.cursor()as cur:s_buf=StringIO()writer=csv.writer(s_buf)writer.writerows(data_iter)s_buf.seek(0)columns=','.join('"{}"'.format(k)for k in keys)if table.schema:table_name='{}.{}'.format...
BufferedReader reader=new BufferedReader(new InputStreamReader(conn.getInputStream()));String line=null;while((line=reader.readLine())!null){ strBuf.append(line).append("");} res=strBuf.toString();reader.close();reader=...
1关闭,0开启)</ParameterDescription><ParameterName>CONN_POOL_XPROTO_STORAGE_DB_PORT</ParameterName><ParameterValue>-1</ParameterValue></ConfigParameters><RunningParameters><ParameterDescription>存储节点私有协议开关(-1关闭...
try { conn=DriverManager.getConnection(s"jdbc:mysql:/$dbUrl:$dbPort/$dbName",dbUser,dbPwd)ps=conn.prepareStatement(sql)e.foreach(pair=>{ ps.setString(1,pair._1)ps.setLong(2,pair._2)ps.executeUpdate()})ps.close()conn.close...
public TlsSniSocketFactory(HttpsURLConnection conn){ this.conn=conn;}.@Override public Socket createSocket(Socket plainSocket,String host,int port,boolean autoClose)throws IOException { String peerHost=this.conn....
executeSuccess&retryTime< MAX_RETRY_TIME){ try { if(conn=null|conn.isClosed()){/Get connection from data source.conn=dataSource.getConnection();} stmt=conn.createStatement();rs=stmt.executeQuery(sql);your logic....
MySqlConnection conn=new MySqlConnection(connStr);try { Console.WriteLine("Connecting to MySQL.");conn.Open();string sql="select c_custkey,c_name from customer limit 1;MySqlCommand cmd=new MySqlCommand(sql,conn);...
int HAL_AT_CONN_Close(int fd,int32_t remote_port)int HAL_AT_CONN_Deinit(void)int HAL_AT_CONN_DomainToIp(char*domain,char ip[16])int HAL_AT_CONN_Init(void)int HAL_AT_CONN_Send(int fd,uint8_t*data,uint32_t len,char remote_ip...
} printf("connect success username%s,password%s",conn_opts.username,conn_opts.password);订阅消息*/MQTTClient_subscribe(client,"/user/aiot_mqtt_demo_downraw",1);生成消息并循环发布消息*/MQTTClient_message pubmsg=MQTTClient_...
您可以在应用程序中结合pg_is_in_recovery()函数,判断连接的数据库是主实例数据库的还是只读实例数据库,最终实现读写分离和故障转移,示例如下:Python示例$cat pg_conn.py import psycopg2 conn=psycopg2.connect(database="postgres",...
try { if(conn=null|conn.isClosed()){ retryTimes+;} } catch(SQLException e1){ if(conn!null){ try { conn.close();} catch(SQLException e2){ e.printStackTrace();} } } } }/Clear connection resource.closeResource();}/*Get ...
print row conn.commit()conn.close()完成后会返回结果示例如下:(1,-1,'p','p','s','u',3022,'192.168.2.158','192.168.2.158',None,None)(6,-1,'m','m','s','u',3019,'192.168.2.47','192.168.2.47',None,None)(2,0,'p','p','s','u',3025...
try { if(conn=null|conn.isClosed()){ retryTimes+;} } catch(SQLException e1){ if(conn!null){ try { conn.close();} catch(SQLException e2){ e.printStackTrace();} } } } }/Clear connection resource.closeResource();}/*Get ...
int HAL_AT_CONN_Close(int fd,int32_t remote_port)int HAL_AT_CONN_Deinit(void)int HAL_AT_CONN_DomainToIp(char*domain,char ip[16])int HAL_AT_CONN_Init(void)int HAL_AT_CONN_Send(int fd,uint8_t*data,uint32_t len,char remote_ip...