connection.close(); 1. 9. 完整代码示例 下面是一个完整的Java链接池的示例代码: importorg.apache.commons.dbcp2.BasicDataSource;importjava.sql.Connection;importjava.sql.ResultSet;importjava.sql.Statement;publicclassConnectionPoolE
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...
connectionPool(new ConnectionPool(100, 30, TimeUnit.SECONDS)) .build(); Retrofit retrofit = new Retrofit.Builder() .baseUrl(HttpUrl.get("https://example.com/")) .addConverterFactory(PageAdapter.FACTORY) .client(okHttpClient) .build(); PageService pageService = retrofit.create(PageService....
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...
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(); ...
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;
Example: Default constructor DB2ConnectionPool pool = new DB2ConnectionPool(); Example: Constructor with a JDBC URL as an argument String URL = "jdbc:db2://server:port/databasename:traceLevel=-1"; Properties props = new Properties();
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 ...