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前言
这是一个简便的,对MongoDB增删改查,无需提前建库,建表,安装就能快速上手使用。
MongoDB多条件查询需要JSON的多层嵌套如{DDATE:{$gte:{$date:'2023-06-05T13:41'},$lte:{$date:'2023-06-05T23:59'}},Qty:{$gt:10}},书写时非常难受,还容易出错。
本类库支持类SQL查询语法,如"DDATE>='2023-06-05 09:12:24' and DDATE10",同时也支持原生查询语法。
安装
Install-Package DbCRUD.MongoDbCRUD安装包
数据库连接及初始化 Database connection and initialization
- //数据库连接 Database connection
- IDbCRUD testdb =new MongoDbCRUD("mongodb://localhost:27017/testdb");
- //带连接选项初始化数据库连接对象
- MongoDbCRUD testdb = new MongoDbCRUD("mongodb://localhost:27017/testdb", opt => { opt.AutoCreateIndex = true;opt.AutoOpen = true; });
复制代码 插入数据 Insert data
- //*****插入对象数据 Insert object data synchronously
- int id = testdb.Max<int>(tb_custormer);
- var customer = new CrudTestModel
- {
- ID = id + 1,
- Name = "objectData",
- Phones = new string[] { "80000", "90000" },
- FFloat=random.NextDouble(),
- IsActive = true,
- Dic = new Dictionary<string, object>
- {
- { "Name", "Embed_Data" },
- { "DDate", DateTime.Now }
- }
- };
- var result = testdb.Insert(tb_custormer, customer);
- //*****插入字典数据 Insert dictionary data synchronously
- var dic1 = new Dictionary<string, object>
- {
- //{ "_id", 1 },//***如果不指定ID,插入时会自动编一个objectid的唯一ID
- { "Name", "MongodbCRUD" },
- { "Qty",random.Next(1,10000) },
- { "DDATE", DateTime.Now }
- };
- var dicresult = testdb.Insert(autoIDData, dic1);
- //*****插入JSON数据 Insert JSON data
- string jsondata = JsonConvert.SerializeObject(dic1);
- var result12 =testdb.Insert(tb_jsondata, jsondata);
- //*****SQL语句插入 sql command insert 大小写敏感
- var result13 = testdb.Insert($"insert into {sqldata}('name','date') values ('test1','{DateTime.Now.ToString("yyyy-MM-dd HH:mm:dd")}')");
- //*****批量插入列表 Batch insert
- List<Dictionary<string, object>> listdata = new List<Dictionary<string, object>>();
- int maxid = testdb.Max<int>(dictable);
- for (int i = 0; i < 10; i++)
- {
- maxid++;
- var dic2 = new Dictionary<string, object>
- {
- { "_id",maxid },
- { "Name", "Batch insert" },
- { "Qty",random.Next(1,10000) },
- { "DDATE", DateTime.Now }
- };
- listdata.Add(dic2);
- }
- var listResult= testdb.Insert(dictable, listdata);
复制代码
更新数据 update data
- var updata = new Dictionary<string, object>
- {
- { "Name", "更新指定字段数据 Updates the specified field data" },
- { "Qty", 600}
- };
- var upresult = testdb.UpDate(dictable, updata, "_id=6"); //更新_id=2的数据
- //【SQL语句更新】 更新_id=1的数据 ,mongodb对大小写敏感,所有sql语句中的表名和字段名大小写要与DB一致。
- var sql_up_result = testdb.UpDate("UPDATE dicdata SET Name='zzw',Qty=188 where _id=1");
复制代码 更新及插入数据(数据存在更新,不存在插入) Update and insert data (there is an update of the data, but there is no insertion)
- //***** 更新或插入数据 Update or insert data
- var dic1 = new Dictionary<string, object>
- {
- { "_id", 2 },
- { "Name", "Inserts or updates a single piece of data" },
- { "Qty", 200},
- { "DDATE", DateTime.Now }
- };
- var result= testdb.Upsert(dictable, dic1);
- //*****Batch insert or update Batch insert or update
- var dic3 = new Dictionary<string, object>
- {
- { "_id", 3 },
- { "Name", "Batch insert or update" },
- { "Qty", 300},
- { "DDATE", DateTime.Now }
- };
- List<Dictionary<string,object>> listdata=new List<Dictionary<string, object>> { dic3,dic1};
- var listresult = testdb.Upsert(dictable, listdata);
- //*****不存在就插入 Insert if it doesn't exist
- int maxid = testdb.Max<int>(dictable)+1;
- var dic4 = new Dictionary<string, object>
- {
- { "_id", maxid },
- { "Name", "根据_id不存在插入值" },
- { "Qty", 8000},
- { "DDATE", DateTime.Now }
- };
- testdb.Upsert(dictable, dic4);
复制代码 查询数据 Query data
- ///查找id=2的数据
- var databyid = testdb.FindByID<Dictionary<string, object>>(dictable, 2);
- //查找id=2的数据,返回模型数据。
- //【注意】模型和数据库中的列数不一致时,需要在模型上加 [BsonIgnoreExtraElements]特性,
- // mongodb默认时UTC时间,如果要转本地时间,在模型时间属性上加[BsonDateTimeOptions(Kind =DateTimeKind.Local)]特性
- var modeldata = testdb.Find<CrudTestModel1>(tb_custormer, "_id=2")?.FirstOrDefault();
- ///查找id>2的数据,返回按DDATE排序,并排除dic列的最新一条数据
- var ondresult = testdb.FindOne<CrudTestModel>(tb_custormer, "_id>2", project: "!dic", sort: "!DDATE");
- //查找Qty>10的数据
- var wheredata = testdb.Find<Dictionary<string, object>>(dictable, "Qty>10");
-
- //【SQL语法,查找开头】,查找name中'Mongodbi'开头的数据,条件不区分大小写,字段名称区分大小写
- var like_result = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'Mongodb%'");
- //【SQL语法,查找结尾】,查找name中'crud'开头的数据,条件不区分大小写,字段名称区分大小写
- var like_result1 = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'%crud'");
- //【SQL语法,包含】,查找name中包含'odb'的数据,条件不区分大小写,字段名称区分大小写
- var like_result2 = testdb.FindAndResult<Dictionary<string, object>>(autoIDData, "Name like'%odb%'");
-
- //【MongoDB语法】,查找name中'Mongodbi'开头的数据,不区分大小写
- var bsonwheredata = testdb.Find<Dictionary<string, object>>(autoIDData, "{Name:/^Mongodb/i}");
-
- //****SQL语法和Mongodb查询语法不能混用,简单查询使用SQL语法,书写简单,复杂查询只能使用原生语法。
- //【简写语法】分页查找Qty>10,返回除_id列,按DDATE倒序排序的数据,返回第一页10条数据。
- var pagedata = testdb.GetPagingData<Dictionary<string, object>>(tb_jsondata, "Qty>10",project:"!_id",sort: "!DDATE", pageindex: 1, pagecount: 10);
-
- //【Mongodb语法】分页查找Qty>10,返回除_id列,按DDATE倒序排序的数据,返回第一页10条数据。
- var mgdb_pagedata = testdb.GetPagingData<Dictionary<string, object>>(tb_jsondata, "{Qty:{$gt:10}}", project: "{_id:0}", sort: "{DDATE:-1}", pageindex: 1, pagecount: 10);
-
- //【返回DataTable】分页查找Qty>10,返回除_id列,按DDATE倒序排序的数据,返回第一页10条数据。
- var datatable_pagedata = testdb.GetPagingData(autoIDData, "Qty>10", project: "!_id", sort: "!DDATE", pageindex: 1, pagecount: 10);
-
- //【多条件查询】分页查找Qty>10,返回除_id列,按DDATE倒序排序的数据,返回第一页10条数据。
- var mu_where = testdb.GetPagingData<Dictionary<string, object>>(dictable, "_id>=6 and Qty>10", sort: "!DDATE", pageindex: 1, pagecount: 10);
-
- //【日期范围查询】查找DDATE>='2023-06-05 09:12:24' 和 DDATE<='2023-06-05 13:28:48'的数据。
- var date_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "DDATE>='2023-06-05 09:12:24' and DDATE<='2023-06-05 13:28:48'", sort: "!DDATE", pageindex: 1, pagecount: 10);
-
- //【in查询】查找Qty=200和300的数据。
- var in_result = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Qty in(200,300)", sort: "!DDATE", pageindex: 1, pagecount: 10);
-
- //【in模糊查询】查找Name=Batch insert和data结尾的数据。
- var in_fuzzy = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Name in('Batch insert','%data')", sort: "!DDATE", pageindex: 1, pagecount: 10);
- //【正则表达式查询】查找Name=Batch开头的数据。
- var in_regex = testdb.GetPagingDataAndResult<Dictionary<string, object>>(dictable, "Name reg'^Batch'", sort: "!DDATE", pageindex: 1, pagecount: 10);s
- //【sql语句查询】查找_id=1的数据
- string sqlcmd = $"select _id,Name,DDATE from {dictable} where _id=1";
- var sqldata = testdb.Find<Dictionary<string, object>>(sqlcmd);
- //【委托查询】查找_id>=6 and Qty>10的数据。数据在委托中返回,方便进行数据处理
- var action_result = testdb.GetPagingDataAction<CrudTestModel1>(dictable, "_id>=6 and Qty>10", datalist =>
- {
- double sum = datalist.Sum(s => s.FFloat);
-
- });
- var link_where = testdb.FindAndResult<CrudTestModel>(tb_custormer, q=>q.ID>6 && q.ID<=10 && q.Name.Contains("obje"));
复制代码 消息事件绑定(可日志输出)
- //**删除ID=8的数据
- var result = testdb.Delete(dictable, 8);
- //**删除qty>10的数据
- var wherresult = testdb.Delete(dictable, "_id>=10");
- //**使用sql语句删除ID = 7的数据,大小写敏感
- string sql = $"delete from {dictable} where _id=7";
- var sqlresult = testdb.Delete(sql);
复制代码 增删改查系列包
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来源:https://www.cnblogs.com/zzwen/archive/2023/07/14/17538400.html
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