connection pool */publicMySQLConnectionPool(String databaseUrl, String userName, String password,intmaxSize){this.databaseUrl = databaseUrl;this.userName = userName;this.password = password;this.maxPoolSize = maxSize; }/** * Get an available connection * *@returnAn available connection *@...
AI检测代码解析 importorg.apache.commons.dbcp2.BasicDataSource;importjava.sql.Connection;importjava.sql.ResultSet;importjava.sql.Statement;publicclassConnectionPoolExample{privatestaticfinalStringDRIVER="com.mysql.jdbc.Driver";privatestaticfinalStringURL="jdbc:mysql://localhost:3306/mydatabase";privatestatic...
AI代码解释 importcom.alibaba.druid.pool.DruidDataSource;importjava.sql.Connection;importjava.sql.PreparedStatement;importjava.sql.ResultSet;importjava.sql.SQLException;publicclassExample{publicstaticvoidmain(String[]args){// 创建Druid数据源并配置DruidDataSource dataSource=newDruidDataSource();dataSource.set...
publicclassExample{publicstaticvoidmain(String[]args){// 获取连接Connectionconnection=AMQPConnectionPool.getInstance().getConnection();// 创建通道Channelchannel=connection.createChannel();// 发送消息Stringmessage="Hello, RabbitMQ!";channel.basicPublish("","queue-name",null,message.getBytes());// 接收...
Connectionconn=null; // 1.获取连接 conn = Util.getConn(); // 2.sql语句 Stringsql="SELECT * FROM example"; // 3.获取对象 PreparedStatementpreparedStatement=conn.prepareStatement(sql); // 4.执行语句 ResultSetrs=preparedStatement.executeQuery(); ...
对象存储的 key 值无需携带/前缀。例如,您将对象 key 值设置为 exampleobject 上传的对象,可以通过 URL:http://cos.ap-guangzhou.myqcloud.com/exampleobject进行访问。 注意: 在批删请求中,请勿传入/前缀的 key,这将导致对象删除失败。 COS 使用 Java SDK 上传报错 please make sure bucket name must contain...
PoolingDataSourceExample 这里的 datasource 是池化的。 import javax.sql.DataSource; import java.sql.Connection; import java.sql.Statement; import java.sql.ResultSet; import java.sql.SQLException; import org.apache.commons.pool2.ObjectPool;
For example, -J-mx512m to use a maximum heap size of 512MB -stack false: Turn off tracking object allocation call stack. -refs false: Turn off tracking of references to objects -port <port>: Set the port for the HTTP server. Defaults to 7000 -exclude <file>: Specify a file that ...
For example, a failure to release resources or to close a socket connection can cause this exception to be thrown. createConnectionConsumer ConnectionConsumer createConnectionConsumer(Destination destination, String messageSelector, ServerSessionPool sessionPool, int maxMessages) throws JMSException Creates ...
ConnectionPoolConfiguration clone() boolean equals(Object obj) Integer getConnectionBorrowTimeout() The number of seconds for a proxy to wait for a connection to become available in the connection pool. String getInitQuery() One or more SQL statements for the proxy to run w...