AI代码解释 java.sql.SQLException:java.lang.ClassCastException:java.math.BigInteger cannot be cast to java.lang.Long at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078)~[mysql-connector-java-5.1.26.jar
Java 连接 MySQL 需要驱动包,最新版下载地址为:http://dev.mysql.com/downloads/connector/j/,解压后得到 jar 库文件,然后在对应的项目中导入该库文件。 你可以下载本站提供的 jar 包:mysql-connector-java-5.1.39-bin.jar 本实例使用的是 Eclipse,导入 jar 包: MySQL 8.0 以上版本的数据库连接有所不同: ...
The last packet sent successfully to the server was0milliseconds ago.The driver has not received any packets from the server.at sunreflectNativeConstructorAccessorImplnewInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)at sunreflect.Delegati...
import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; publicclass helloworld { private Connection conn =null; PreparedStatement statement =null; // connect to MySQL void connSQL() { String urle ="jdbc:...
package DBConnect; import java.sql.*; public class DBConnection { public static void main(String[] args){ //驱动程序名//不固定,根据驱动 String driver ="com.mysql.jdbc.Driver"; // URL指向要访问的数据库名*** String url ="jdbc:mysql://localhost/***"; // MySQL...
= null ? socketFactory.createSocket() : new Socket(); ("===dataConfig===",dataConfig.toString()); socket.connect(new InetSocketAddress((dataConfig.getJavaHost()), dataConfig.getJavaPort()), (int) TimeUnit.SECONDS.toMillis(3)); PacketChannel channel = new PacketChannel(socket); byte[...
indexEntry.getKey() 在 MySQL 8.0.26 会抛出异常: java.math.BigInteger cannot be cast to java.lang.Long MySQL 5.7.36 至此,大家对根因是不是完全明白了? mysql-connector-java 5.1.26 配不上 MySQL 8 mysql-connector-java 5.1.26 适配的是 COLLATIONS 的 bigint 类型的 ID ,而非 bigint unsigned ...
mysqlx_connect_timeout 30 mysqlx_idle_worker_thread_timeout 60 mysqlx_interactive_timeout 28800 mysqlx_port_open_timeout 0 mysqlx_read_timeout 30 mysqlx_wait_timeout 28800 We are getting below error while inserting data in MySQL xDB. We are able to read the data from collections at the...
Apache Druid: a high performance real-time analytics database. - upgrade mysql:mysql-connector-java to 8.2.0 (#16024) · apache/druid@92fb0ff
and therefore will not be able to connect to accounts that authenticate with the new plugin (which might include the root account created by default during a new installation of a MySQL 8.0 Server), it is highly recommended that you upgrade now to Connector/J 5.1.46, ...