/**日志对象*/ static Logger log =LoggerFactory.getLogger(GetGmvByRfxno.class); /**数据库工具类*/ DBTools...dbtools=new DBTools(); @Override public Double exec(Tuple input) throws IOException { if(input...//获取传入的订单号 String rfxno =(String)input.get(0); //通过db类，查询对应的gmv并返回 double gmv=dbtools.getGmvByRfxno...处理 return 0.00; } } } 数据库封装类： Java代码 /*** * 数据库工具类 * */ public class DBTools...{ /**日志对象*/ static Logger log =LoggerFactory.getLogger(DBTools.class); private static Connection
Person { var name : String = "" var phone : String = "" var address : String = "" } DBTools...: DBTools?...= DBTools() } @IBAction func createTab(_ sender: Any) { dbTools?....insertPerson(person: p) } @IBAction func deleteData(_ sender: Any) { dbTools?....updatePerson(person: p) } @IBAction func selectData(_ sender: Any) { let person = dbTools
db; public BackupA(DBTools db) { this.db = db; } @Override public void run(...) { db.backupA(); } } 线程代码2： public class BackupB extends Thread { private DBTools db...; public BackupB(DBTools db) { this.db = db; } @Override public void run() {...dbTools = new DBTools(); for (int i = 0; i < 20; i++) { BackupB output = new BackupB...(dbTools); output.start(); BackupA input = new BackupA(dbTools);
org.apache.ibatis.session.SqlSession; 6 7 import com.cy.mybatis.beans.UserBean; 8 import com.cy.mybatis.tools.DBTools...25 * 新增用户 26 */ 27 private static void insertUser() { 28 SqlSession session = DBTools.getSession...** 43 * 删除用户 44 */ 45 private static void deleteUser(){ 46 SqlSession session=DBTools.getSession...* 根据id查询用户 60 */ 61 private static void selectUserById(){ 62 SqlSession session=DBTools.getSession...* 查询所有的用户 77 */ 78 private static void selectAllUser(){ 79 SqlSession session=DBTools.getSession
UserDao中对应的操作 public static int insertUser(Map params) { SqlSession session = DBTools.getSession
} } catch（SQLException e）{ e.printStackTrace（）; } } } 未定义 DBTools.java...import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; public class DBTools
self.get_argument('limit',10) offset=self.get_argument('offset',0) #print search result=dbTools.getMonitorDataBySpecies
/dbTools') // 注意路径 let router = new Router() router.get('/users/list', async (ctx, next) => { await
dbTools; public BackupA(DBTools dbTools) { this.dbTools = dbTools; } @Override...public void run() { dbTools.backupA(); } } public class BackupB extends Thread {...private DBTools dbTools; public BackupB(DBTools dbTools) { this.dbTools = dbTools; }...static void main(String[] args) { DBTools dbTools = new DBTools(); for (int i = 0;...BackupA input = new BackupA(dbTools); input.start(); } } } ?
二、现象 在平稳运行几个月后，某天突然收到报警，其中有几个重要的信息拿出来跟大家分享下: 1、程序端报错： ERROR dbtools.get_table_mysql_connect:865 (1135
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