397 lines
16 KiB
C#
397 lines
16 KiB
C#
using Google.Protobuf.WellKnownTypes;
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using MonitoringTechnology.Models;
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using MySql.Data.MySqlClient;
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Configuration;
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using System.Data;
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namespace MonitoringTechnology.DataAccess
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{
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public class DBHelper
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{
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//连接钥匙
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private static readonly string ConnStr = ConfigurationManager.ConnectionStrings["db"].ConnectionString;
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MySqlConnection conn = null;
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/// <summary>
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/// 增删改
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/// </summary>
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/// <param name="sql">增删改</param>
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/// <param name="cmdType">1代表是查询过程 2 是代表存储过程</param>
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/// <param name="paras"></param>
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/// <returns></returns>
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public static int ExecuteNonQuery(string sql, int cmdType, params MySqlParameter[] paras)
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{
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int count = 0;
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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MySqlCommand cmd = BuildCommand(conn, sql, cmdType, null, paras);
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count = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear(); //清空数组集合
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conn.Close();
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}
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return count;
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}
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/// <summary>
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/// 查询一个值
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="cmdType"></param>
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/// <param name="paras"></param>
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/// <returns></returns>
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public static object ExecuteScalar(string sql, int cmdType, params MySqlParameter[] paras)
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{
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object o = 0;
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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MySqlCommand cmd = BuildCommand(conn, sql, cmdType, null, paras);
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o = cmd.ExecuteScalar();
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cmd.Parameters.Clear();
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conn.Close();
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}
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return o;
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}
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/// <summary>
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/// 查询多行值
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="cmdType"></param>
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/// <param name="paras"></param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static MySqlDataReader ExecuteReader(string sql, int cmdType, params MySqlParameter[] paras)
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{
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MySqlDataReader dr = null;
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MySqlConnection conn = new MySqlConnection(ConnStr);
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MySqlCommand cmd = BuildCommand(conn, sql, cmdType, null, paras);
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try
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{
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dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
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cmd.Parameters.Clear();
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}
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catch (MySqlException ex)
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{
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conn.Close();
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throw new Exception("执行查询异常", ex);
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}
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return dr;
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}
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/// <summary>
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/// 填充DataSet
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="cmdType"></param>
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/// <param name="paras"></param>
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/// <returns></returns>
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public static DataSet GetDataSet(string sql, int cmdType, MySqlParameter[] paras)
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{
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DataSet ds = new DataSet();
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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MySqlCommand cmd = BuildCommand(conn, sql, cmdType, null, paras);
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MySqlDataAdapter da = new MySqlDataAdapter(cmd);
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//conn.Open();
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da.Fill(ds);
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conn.Close();
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}
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return ds;
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}
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/// <summary>
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/// 填充DataTable 一个结果集
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="cmdType"></param>
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/// <param name="paras"></param>
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/// <returns></returns>
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public static DataTable GetDataTable(string sql, int cmdType, MySqlParameter[] paras)
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{
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DataTable dt = new DataTable();
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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MySqlCommand cmd = BuildCommand(conn, sql, cmdType, null, paras);
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MySqlDataAdapter da = new MySqlDataAdapter(cmd);
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//conn.Open();
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da.Fill(dt);
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conn.Close();
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}
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return dt;
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}
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/// <summary>
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/// 事务 一系列的sql语句 针对增删该查
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/// </summary>
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/// <param name="listSQL"></param>
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/// <returns></returns>
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public static bool ExecuteTrans(List<string> listSQL)
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{
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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conn.Open();
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MySqlTransaction trans = conn.BeginTransaction();
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//MySqlCommand cmd = conn.CreateCommand();
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//cmd.Transaction = trans;
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MySqlCommand cmd = BuildCommand(conn, "", 1, trans);
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try
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{
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for (int i = 0; i < listSQL.Count; i++)
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{
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cmd.CommandText = listSQL[i];
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cmd.ExecuteNonQuery();
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}
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trans.Commit();
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return true;
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}
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catch (MySqlException ex)
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{
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trans.Rollback();//回滚
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throw new Exception("执行事务出现异常", ex);
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}
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finally
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{
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trans.Dispose();
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cmd.Dispose();
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conn.Close();
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}
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}
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}
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/// <summary>
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/// 执行事务 每个操作分装到cmdInfo中
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/// </summary>
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/// <param name="listCmd"></param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static bool ExecuteTrans(List<CmdInfo> listCmd)
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{
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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conn.Open();
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MySqlTransaction trans = conn.BeginTransaction();
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//MySqlCommand cmd = conn.CreateCommand();
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//cmd.Transaction = trans;
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MySqlCommand cmd = BuildCommand(conn, "", 1, trans);
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try
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{
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for (int i = 0; i < listCmd.Count; i++)
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{
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cmd.CommandText = listCmd[i].CommandText;
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if (listCmd.Count == 2)
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cmd.CommandType = CommandType.StoredProcedure;
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cmd.Parameters.Clear(); //很重要
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if (cmd.Parameters != null && cmd.Parameters.Count > 0)
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cmd.Parameters.AddRange(listCmd[i].Parameters);
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cmd.ExecuteNonQuery();
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cmd.Parameters.Clear(); //很重要
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}
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trans.Commit();
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return true;
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}
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catch (MySqlException ex)
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{
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trans.Rollback();//回滚
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throw new Exception("执行事务出现异常", ex);
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}
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finally
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{
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trans.Dispose();
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cmd.Dispose();
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conn.Close();
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}
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}
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}
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/// <summary>
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/// 构造SqlCommand
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/// </summary>
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/// <param name="conn"></param>
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/// <param name="sql"></param>
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/// <param name="cmdType"></param>
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/// <param name="trans"></param>
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/// <param name="paras"></param>
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/// <returns></returns>
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private static MySqlCommand BuildCommand(MySqlConnection conn, string sql, int cmdType, MySqlTransaction trans, params MySqlParameter[] paras)
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{
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MySqlCommand cmd = new MySqlCommand(sql, conn);
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if (cmdType == 2)
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cmd.CommandType = CommandType.StoredProcedure; //代表是存储过程
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if (paras != null && paras.Length > 0)
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cmd.Parameters.AddRange(paras);
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if (conn.State == ConnectionState.Closed)
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conn.Open();
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if (trans != null)
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cmd.Transaction = trans;
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return cmd;
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}
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/// <summary>
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/// 对数据库插入数据---定制化，需要改动
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/// </summary>
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/// <param name="tablename">表名</param>
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/// <param name="stationId">站点ID</param>
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/// <param name="RecordTime">数据记录时间</param>
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/// <param name="key">需要插入的值的名称</param>
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/// <param name="value">值</param>
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public static void insertData(string tablename, int stationId, DateTime RecordTime, string key, object value)
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{
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//首先判断数据库中是否有这一条数据
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string sql = string.Format("select id from {0} where RecordTime = '{1}'", tablename, RecordTime);
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if (ExecuteScalar(sql, 1) == null)
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{
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sql = string.Format("insert into {0}(StationID,RecordTime,DataTime,{1}) VALUES({2},'{3}','{4}',{5});", tablename, key, stationId, RecordTime, System.DateTime.Now, value.ToString());
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}
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else
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{
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sql = string.Format("update {0} set {1}={2} where RecordTime='{3}'", tablename, key, value.ToString(), RecordTime);
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}
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ExecuteNonQuery(sql, 1);
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}
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/// <summary>
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/// 查询表AlarmItemModel中最新的十条数据
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/// </summary>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public ObservableCollection<AlarmItemModel> Query_AlarmItemModelList()
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{
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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conn.Open();
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ObservableCollection<AlarmItemModel> alarmItemModels = new ObservableCollection<AlarmItemModel>();
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string sql = @"select * from alarmitemmodel ORDER BY F_CreateDate DESC LIMIT 30";
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try
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{
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int s = 01;
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MySqlDataAdapter adapter = new MySqlDataAdapter(sql, conn);
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//创建一个DataTable用于接收数据库中的数据
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DataTable table = new DataTable();
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int count = adapter.Fill(table);
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//循环遍历
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foreach (DataRow dr in table.AsEnumerable())
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{
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alarmItemModels.Add(new AlarmItemModel
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{
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F_SerialNo = s,
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F_CreateDate = dr.Field<DateTime>("F_CreateDate"),
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F_Time = dr.Field<DateTime>("F_Time"),
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F_Message = dr.Field<string>("F_Message"),
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F_Len = dr.Field<string>("F_Len")
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});
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s++;
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}
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return alarmItemModels;
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}
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catch (MySqlException ex)
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{
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throw new Exception("执行查询表AlarmItemModel数据出现异常", ex);
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}
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finally
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{
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conn.Close();
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}
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}
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}
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/// <summary>
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/// 查询表MonitoringSensorModel中最新的十五条数据
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/// </summary>
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/// <returns></returns>
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public ObservableCollection<ElectricalEnvironmentalModel> Query_monitoringSensorModelsList()
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{
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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conn.Open();
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ObservableCollection<ElectricalEnvironmentalModel> ElectricalEnvironmental = new ObservableCollection<ElectricalEnvironmentalModel>();
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string sql = @"select F_Id,F_CreateDate,F_DatetimeSensor,F_Tem,F_Hum,F_Pressure from monitoringsensormodel ORDER BY F_CreateDate DESC LIMIT 30";
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try
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{
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int m = 01;
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MySqlDataAdapter adapter = new MySqlDataAdapter(sql, conn);
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//创建一个DataTable用于接收数据库中的数据
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DataTable table = new DataTable();
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int count = adapter.Fill(table);
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//循环遍历
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foreach (DataRow dr in table.AsEnumerable())
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{
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ElectricalEnvironmental.Add(new ElectricalEnvironmentalModel
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{
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F_SerialNo = m,
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F_CreateDate = dr.Field<DateTime>("F_CreateDate"),
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F_DatetimeSensor = dr.Field<DateTime>("F_DatetimeSensor"),
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F_Tem = dr.Field<float>("F_Tem"),
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F_Hum = dr.Field<float>("F_Hum"),
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F_Pressure = dr.Field<float>("F_Pressure"),
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}) ;
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m++;
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}
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return ElectricalEnvironmental;
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}
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catch (MySqlException ex)
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{
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throw new Exception("执行查询表MonitoringSensorModel数据出现异常", ex);
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}
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finally
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{
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conn.Close();
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}
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}
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}
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/// <summary>
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/// 查询表MonitoringSensorModel中最新的一条数据
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/// </summary>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public MonitoringSensorModel Query_MonitoringSensorFirst()
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{
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using (MySqlConnection conn = new MySqlConnection(ConnStr))
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{
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conn.Open();
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MonitoringSensorModel monitoringSensorModel = new MonitoringSensorModel();
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string sql = @"select * from monitoringsensormodel ORDER BY F_CreateDate DESC LIMIT 1";
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try
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{
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MySqlDataAdapter adapter = new MySqlDataAdapter(sql, conn);
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//创建一个DataTable用于接收数据库中的数据
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DataTable table = new DataTable();
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int count = adapter.Fill(table);
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//循环遍历
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foreach (DataRow dr in table.AsEnumerable())
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{
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monitoringSensorModel.F_Id = dr.Field<int>("F_Id");
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monitoringSensorModel.F_Tem = dr.Field<float>("F_Tem");
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monitoringSensorModel.F_CreateDate = dr.Field<DateTime>("F_CreateDate");
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monitoringSensorModel.F_DatetimeSensor = dr.Field<DateTime>("F_DatetimeSensor");
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monitoringSensorModel.F_Hum = dr.Field<float>("F_Hum");
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monitoringSensorModel.F_Pressure = dr.Field<float>("F_Pressure");
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monitoringSensorModel.F_AccelerationX = dr.Field<float>("F_AccelerationX");
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monitoringSensorModel.F_AccelerationY = dr.Field<float>("F_AccelerationY");
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monitoringSensorModel.F_AccelerationZ = dr.Field<float>("F_AccelerationZ");
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monitoringSensorModel.F_AngularVelocityX = dr.Field<float>("F_AngularVelocityX");
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monitoringSensorModel.F_AngularVelocityY = dr.Field<float>("F_AngularVelocityY");
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monitoringSensorModel.F_AngularVelocityZ = dr.Field<float>("F_AngularVelocityZ");
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monitoringSensorModel.F_DegreesX = dr.Field<float>("F_DegreesX");
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monitoringSensorModel.F_DegreesY = dr.Field<float>("F_DegreesY");
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monitoringSensorModel.F_DegreesZ = dr.Field<float>("F_DegreesZ");
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}
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return monitoringSensorModel;
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}
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catch (MySqlException ex)
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{
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throw new Exception("执行查询表MonitoringSensorModel数据出现异常", ex);
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}
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finally
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{
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conn.Close();
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}
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}
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}
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}
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}
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