unity 连接Sqlit数据库,操作数据库

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链接Sqlite数据库需要sqlite工具,下载对应系统的工具 SQLite Download Page和下载sqlite可视化工具(下方百度云)

操作Sqlite数据库，通过封装的(增删改查)的类来操作数据库 

可视化工具和DBAccess类脚本链接：http://pan.baidu.com/s/1mij6z7E

我用的是Mac系统，数据库的路径不一样，如果是windows系统的朋友需要改一下路径

1.直接对数据库的操作（增删改查）

例 插入数据

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Mono.Data.Sqlite;
using System.IO;

public class ReadConfig : MonoBehaviour {
    //声明数据库连接对象
    SqliteCommand sqlCommand;

    SqliteConnection sqlConection;

    //定义数据的存储路径
    private string path; 
	// Use this for initialization
	void Start () {
        path="Data Source="+Application.streamingAssetsPath+"/"+"MySql.db";
        //if (!File.Exists(path))
        //{
        //    File.Create(path);
        //}
        try
        {
            sqlConection = new SqliteConnection(path);
            sqlConection.Open();
            print("连接成功");

            //创建Command
            sqlCommand=sqlConection.CreateCommand();
            Insert();
        }
        catch(System.Exception e)
        {
            Debug.LogError("打开数据库失败"+e.ToString());
        }

	}


    //插入数据
    public void Insert()
    {
//        string item="INSERT INTO"+"PlayerMessager"+"VALUES("1","盖伦"));
        //一次只能插入一条的数据
        sqlCommand.CommandText="INSERT INTO "+"PlayerMassager"+" VALUES "+"(567,'小乔','456','[email protected]')";
        //sqlCommand.CommandText="insert into "+"PlayerMassager"+" values "+"(147,'阿狸','753','[email protected]')";
//        sqlCommand.CommandText="Insert Into PlayerMassager (ID,Name,PassWord,Emil) values"+"(567,'小乔','456','[email protected]')";
        //执行SQL语句
        sqlCommand.ExecuteNonQuery();
        print("插入成功");
        //释放Command中的资源
        sqlCommand.Dispose();
        //关闭数据库
        sqlConection.Close();
        print("关闭数据库");
    }
}

数据插入前

数据插入后

2.通过DBAccess类操作数据库

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Mono.Data.Sqlite;

public class TestDB : MonoBehaviour {
    private DbAccess db;
    private string path;
    private string tableName;


	// Use this for initialization
	void Start () {
        tableName="PlayerMassager";
        //Pc端的链接
        //path = @"Data Source="+ Application.streamingAssetsPath + "/MySql.db";
        //Mac端的数据库路径
        path="Data Source="+Application.streamingAssetsPath+"/MySql.db";
        db = new DbAccess();
	}
    public void Open()
    {
        db = new DbAccess(path);
    }
    //创建表
    public void CreateTable()
    {
        Open();
        db.CreateTable("Property",new string[]{"Name","WeaponType","attack","mass"},new string[]{"TEXT","TEXT","TEXT","TEXT"});
        db.CloseSqlConnection();
    }
    public void Insert()
    {
        //打开数据库
        Open();
        //插入数据
        db.InsertInto(tableName,new string[]{"582","'子涵'","'Love'","'[email protected]'"});
        db.InsertIntoSpecific(tableName, new string[]{ "ID", "Name" }, new string[]{ "125", "'寒冰'" });
        db.CloseSqlConnection();
    }
    //更新
    public void UpdateSql()
    {
        Open();
        //更新数据   表名 要更新的键  要跟新的值 条件
        db.UpdateInto(tableName,new string[]{"PassWord"},new string[]{"'666666666'"},"ID","147");
        db.CloseSqlConnection();
    }
    //读取
    public void ReadSql()
    {
        Open();
        //读取表内所有数据
        SqliteDataReader reader=db.ReadFullTable(tableName);
        //循环表内数据
        while (reader.Read()) 
        {
            print(reader.GetInt32(reader.GetOrdinal("ID")));
            print(reader.GetString(reader.GetOrdinal("Name")));
            print(reader.GetString(reader.GetOrdinal("PassWord")));
            print(reader.GetString(reader.GetOrdinal("Emil")));
            //打印这个物体的所有信息
//            for (int i = 0; i < reader.FieldCount; i++)
//            {
//                print(reader.GetName(i));
//                print(reader.GetValue(i));
//            }
        }
        db.CloseSqlConnection();

    }
    //删除表
    public void RemoveTable()
    {
        Open();
        db.DeleteContents("Property");
        db.CloseSqlConnection();

    }
    //删除一条数据
    public void DeleteWhere()
    {
        Open();
        db.Delete("Property", new string[]{ "Name" }, new string[]{ "'电刀'" }); 
        db.CloseSqlConnection();
    }

    //查询
    public void SeletSql()
    {
        Open();
        //
        SqliteDataReader reader=db.SelectWhere(tableName,new string[]{"Name"},new string[]{"ID"},new string[]{"=="},new string[]{"582"});
        while (reader.Read())
        {
            print(reader.GetString(reader.GetOrdinal("Name")));
        }
        db.CloseSqlConnection();
    }

    //显示
    private void OnGUI()
    {
        if (GUI.Button(new Rect(100, 100, 100, 50), "执行"))
        {
            UpdateSql();
        }
    }
}

注意：数据库的路径，添加数据时必须要添加上主键，不然在数据库可视化工具上不显示，每次打开数据库，操作完成就必须关闭数据库，不让会发生死锁