jdbc

问题 I am trying to read a MySQL db record using this simple code in Google Apps Script: function testConn(){ // make the connection var connection = Jdbc.getConnection("jdbc:mysql://" + DB.URL + ":" + DB.PORT + "/" + DB.DATABASE, DB.USERNAME, DB.PASSWORD); // perform the query var SQLstatement = connection.createStatement(); var result = SQLstatement.executeQuery("SELECT date_available FROM oc_product where model = 'B23-U57-U57'"); var colNum = result.getMetaData().getColumnCount(); while(result

问题 I receive a lot of the messages (by http-protocol) per second (50000 - 100000) and want to save them to PostgreSql. I decided to use Kafka JDBC Sink for this purpose. The messages are saved to database by one record, not in batches. I want to insert records in PostgreSQL in batches with size 500-1000 records. I found some answers on this problem in issue: How to use batch.size? I tried to use related options in configuration, but it seems that they no have any effect. My Kafka JDBC Sink

问题 I receive a lot of the messages (by http-protocol) per second (50000 - 100000) and want to save them to PostgreSql. I decided to use Kafka JDBC Sink for this purpose. The messages are saved to database by one record, not in batches. I want to insert records in PostgreSQL in batches with size 500-1000 records. I found some answers on this problem in issue: How to use batch.size? I tried to use related options in configuration, but it seems that they no have any effect. My Kafka JDBC Sink

问题 I am having a lot of difficulty configuring a JNDI Resource in Jetty. I've gotten this to work in a Tomcat easily using context.xml and the Resource node. Attempts have been made to specify the resource in Jetty in both the jetty-env.xml and their version of a context.xml file but I end up getting the same exception. Here is the context.xml version of the resource definition: <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse

问题 I am having a lot of difficulty configuring a JNDI Resource in Jetty. I've gotten this to work in a Tomcat easily using context.xml and the Resource node. Attempts have been made to specify the resource in Jetty in both the jetty-env.xml and their version of a context.xml file but I end up getting the same exception. Here is the context.xml version of the resource definition: <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse

问题 I have this Tetris game written in Java, which uses DB to record high scores. It worked ok as long as I was using remote MySQL DB, but now I'm trying to set up localhost DB using XAMPP MySQL and it keeps going like "SQLException: Communications link failure" at command: con = java.sql.DriverManager.getConnection("jdbc:mysql://localhost/score", user, psw); I guess it's either wrong URL or DB configuration, but I really don't know what to check. Any ideas? EDIT: My friend has fixed my problem

问题 This question already has answers here : The infamous java.sql.SQLException: No suitable driver found (16 answers) Closed 3 years ago . I have a problem with my progect. Files of progect: House.class public class House implements Serializable { //properties ------------------------------------------------------------- private String price; private String square; private String RoomNumbers; //------------------------------------------------------------------------ //getters - settersm Object

问题 This question already has answers here : The infamous java.sql.SQLException: No suitable driver found (16 answers) Closed 3 years ago . I have a problem with my progect. Files of progect: House.class public class House implements Serializable { //properties ------------------------------------------------------------- private String price; private String square; private String RoomNumbers; //------------------------------------------------------------------------ //getters - settersm Object

问题 I would like to have a value from a row inserted into an other row here is my code: static void addVipMonth(String name) throws SQLException { Connection conn = (Connection) DriverManager.getConnection(url, user, pass); PreparedStatement queryStatement = (PreparedStatement) conn.prepareStatement("INSERT INTO vips(memberId, gotten, expires) " + "VALUES (SELECT name FROM members WHERE id = ?, NOW(), DATEADD(month, 1, NOW()))"); //Put your query in the quotes queryStatement.setString(1, name);

问题 I am trying to add data to my Google Cloud SQL database using Google App Script. My code was working fine last night when I finished but when I ran it this morning it is now giving me the error "statement cancelled due to timeout or client request", the error I am getting in the cloud console is "Got an error reading communication packets". Last night it was processing about 1,600 lines of data. I have played around with it and narrowed it down that the error will occur when there is more the