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  • 员工工资管理系统---Utils

    Utils.java

    package Utils;
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    public class Utils {
        public static String db_url = "jdbc:mysql://localhost:3306/sjzyuhuan?useSSL=false";
        public static String db_user = "root";//账号
        public static String db_pass = "258000";//密码
    
        public static Connection getConn () {
            Connection conn = null;
    
            try {
                Class.forName("com.mysql.jdbc.Driver");
                conn = DriverManager.getConnection(db_url, db_user, db_pass);
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            return conn;
        }
    
        public static void close (Statement state, Connection conn) {
            if (state != null) {
                try {
                    state.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
    
            if (conn != null) {
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    
        public static void close (ResultSet rs, Statement state, Connection conn) {
            if (rs != null) {
                try {
                    rs.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
    
            if (state != null) {
                try {
                    state.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
    
            if (conn != null) {
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/linmob/p/14162817.html
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