When we connect application with database using "localhost:port" connection string, our application works fine. However, when we change it to use "ip address:host", application works fine in beginning but after idling for say 5 minutes, is not able to fetch data from database and results ...
public static void main(String[] args) { String url = "jdbc//localhost:3306/test"; String username = "root"; String password = "password"; try { // 加载驱动程序 Class.forName("com.mysql.cj.jdbc.Driver"); // 创建连接对象 Connection conn = DriverManager.getConnection(url, username, passw...
string"localhost", a connection to the local hostisassumed. If the OS supports sockets (Unix) or named pipes (Windows), they are used instead of TCP/IP to connect to the server. * The user parameter contains the user's MySQL login ID. If user is NULL or the empty string "", the ...
Step1:App.config文件里进行配置 <?xml version="1.0"encoding="utf-8"?> <configuration> <startup> <supportedRuntime version="v4.0"sku=".NETFramework,Version=v4.5.2"/> </startup><connectionStrings> <add name="Connect" connectionString="server=localhost;user=root;pwd=admin;database=BlackCat"/...
<add name="connstring" connectionString="User Id=root;host=localhost;Database=cnseb_spider;password=;port=3306;persist security info=True;character set=utf8;" providerName="MySql.Data.MySqlClient"/> </connectionStrings> 1. 2. 3. 5. mysql操作类,可以直接使用,已经测试过了 ...
jdbc_connection_string => "jdbc:mysql://localhost:3306/logstash_example" jdbc_user => "your_user" jdbc_password => "your_password" statement => "SELECT * FROM users" } } output { stdout { codec => json_lines } } 1. 2.
String url="jdbc:mysql://localhost:3306/sample_db?user=root&password=your_password";例如：import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Connection;import java.sql.Statement; public class MysqlDemo { public static void main(Strin...
String connectionString = "jdbc:mysql://localhost:3306/my_database?user=root&password=Pass&...
public class JdbcFirstDemo { public static void main(String[] args) { //要连接的数据库URL信息 String url = "jdbc:mysql://localhost:3306/jdbcstudy?useUnicode=true&characterEncoding=utf8&useSSL=true"; String username = "root"; String password = ""; //1.加载驱动 try { Class.forName("com...
The following code shows how to create a connection object/ usingSystem;usingSystem.Data;usingMySql.Data;usingMySql.Data.MySqlClient;publicclassTutorial1{publicstaticvoidMain(){stringconnStr="server=localhost;user=root;database=world;port=3306;password=***";MySqlConnection conn=newMySqlConnection...