版权声明：本文为博主原创文章，转载请注明出处。 https://blog.csdn.net/qq563129582/article/details/79415797
准备工作
1.前往官网下载工具：https://dev.mysql.com/downloads/
1.MySQL Server：连接数据库必备的服务。
2.MySQL Workbench：window下管理mysql数据库的可视化工具。
3.MySQL Connectors/Net：Net操作mysql数据库必备的库，如果是python，C++，java自行下载对应版本的Connectors
4.以上安装可以分开下载，单独安装，也可以直接下载MySQL Installer，这是MySQL官网提供的下载器，安装打开后可以选择性的安装，也很方便，记住：不需要的尽量别选。
MySQL 安装配置
代码
using UnityEngine;
using System;
using System.Data;
using System.Collections;
using MySql.Data.MySqlClient;
using MySql.Data;
using System.IO;
public class SqlAccess
{
public static MySqlConnection dbConnection;
//如果只是在本地的话，写localhost就可以。
// static string host = "localhost";
//如果是局域网，那么写上本机的局域网IP
static string host = "192.168.1.106";
static string id = "root";
static string pwd = "1234";
static string database = "xuanyusong";
public SqlAccess()
{
OpenSql();
}
public static void OpenSql()
{
try
{
string connectionString = string.Format("Server = {0};port={4};Database = {1}; User ID = {2}; Password = {3};",host,database,id,pwd,"3306");
dbConnection = new MySqlConnection(connectionString);
dbConnection.Open();
}catch (Exception e)
{
throw new Exception("服务器连接失败，请重新检查是否打开MySql服务。" + e.Message.ToString());
}
}
public DataSet CreateTable (string name, string[] col, string[] colType)
{
if (col.Length != colType.Length)
{
throw new Exception ("columns.Length != colType.Length");
}
string query = "CREATE TABLE " + name + " (" + col[0] + " " + colType[0];
for (int i = 1; i < col.Length; ++i) {
query += ", " + col[i] + " " + colType[i];
}
query += ")";
return ExecuteQuery(query);
}
public DataSet CreateTableAutoID (string name, string[] col, string[] colType)
{
if (col.Length != colType.Length)
{
throw new Exception ("columns.Length != colType.Length");
}
string query = "CREATE TABLE " + name + " (" + col[0] + " " + colType[0] + " NOT NULL AUTO_INCREMENT";
for (int i = 1; i < col.Length; ++i) {
query += ", " + col[i] + " " + colType[i];
}
query += ", PRIMARY KEY ("+ col[0] +")" + ")";
Debug.Log(query);
return ExecuteQuery(query);
}
//插入一条数据，包括所有，不适用自动累加ID。
public DataSet InsertInto (string tableName, string[] values)
{
string query = "INSERT INTO " + tableName + " VALUES (" + "'"+ values[0]+ "'";
for (int i = 1; i < values.Length; ++i) {
query += ", " + "'"+values[i]+ "'";
}
query += ")";
Debug.Log(query);
return ExecuteQuery (query);
}
//插入部分ID
public DataSet InsertInto (string tableName, string[] col,string[] values)
{
if (col.Length != values.Length)
{
throw new Exception ("columns.Length != colType.Length");
}
string query = "INSERT INTO " + tableName + " (" + col[0];
for (int i = 1; i < col.Length; ++i)
{
query += ", "+col[i];
}
query += ") VALUES (" + "'"+ values[0]+ "'";
for (int i = 1; i < values.Length; ++i)
{
query += ", " + "'"+values[i]+ "'";
}
query += ")";
Debug.Log(query);
return ExecuteQuery (query);
}
public DataSet SelectWhere (string tableName, string[] items, string[] col, string[] operation, string[] values)
{
if (col.Length != operation.Length || operation.Length != values.Length) {
throw new Exception ("col.Length != operation.Length != values.Length");
}
string query = "SELECT " + items[0];
for (int i = 1; i < items.Length; ++i) {
query += ", " + items[i];
}
query += " FROM " + tableName + " WHERE " + col[0] + operation[0] + "'" + values[0] + "' ";
for (int i = 1; i < col.Length; ++i) {
query += " AND " + col[i] + operation[i] + "'" + values[0] + "' ";
}
return ExecuteQuery (query);
}
public DataSet UpdateInto (string tableName, string []cols,string []colsvalues,string selectkey,string selectvalue)
{
string query = "UPDATE "+tableName+" SET "+cols[0]+" = "+colsvalues[0];
for (int i = 1; i < colsvalues.Length; ++i) {
query += ", " +cols[i]+" ="+ colsvalues[i];
}
query += " WHERE "+selectkey+" = "+selectvalue+" ";
return ExecuteQuery (query);
}
public DataSet Delete(string tableName,string []cols,string []colsvalues)
{
string query = "DELETE FROM "+tableName + " WHERE " +cols[0] +" = " + colsvalues[0];
for (int i = 1; i < colsvalues.Length; ++i)
{
query += " or " +cols[i]+" = "+ colsvalues[i];
}
Debug.Log(query);
return ExecuteQuery (query);
}
public void Close()
{
if(dbConnection != null)
{
dbConnection.Close();
dbConnection.Dispose();
dbConnection = null;
}
}
public static DataSet ExecuteQuery(string sqlString)
{
if(dbConnection.State==ConnectionState.Open)
{
DataSet ds = new DataSet();
try
{
MySqlDataAdapter da = new MySqlDataAdapter(sqlString, dbConnection);
da.Fill(ds);
}
catch (Exception ee)
{
throw new Exception("SQL:" + sqlString + "/n" + ee.Message.ToString());
}
finally
{
}
return ds;
}
return null;
}
}