文档（document）的数据结构和 JSON 基本一样。所有存储在集合中的数据都是 BSON 格式。

一、文档插入

db.collection.insert( , { writeConcern: , ordered:  } ) 例子：db.getCollection("user").insert({"name": "尔康"},{ordered:true})

• collection集合如果不存在，则会隐式创建
• mongo中的数字，默认情况下是double类型，如果要存整型，必须使用函数NumberInt(整型数字)，否则取出来就有问题
• 插入当前日期使用new Data()
• 插入的数据没有指定_id，会自动生成主键值
• 如果某字段没值，可以赋值为null，或不写该字段
• MongoDB区分类型和大小写

1、Insert

（1）插入单个文档

db.CalendarTaskEntity.insert(
{ 
"orgId" : "d870d3e653b43da1a3d14ef30566386d",
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "123", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829611179), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } 
],
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840143671)
});

（2）插入多个文档

db.CalendarTaskEntity.insert(
[{ 
"orgId" : "d870d3e653b43da1a3d14ef30566386d",
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "113", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829611179), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840143671)
}, 
{"orgId" : "d870d3e653b43da1a3d14ef30566386d", 
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "12233", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829704103), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840241041)
}]);

2、InsertOne

一次只能插入一条数据，如果插入多条的话，是会报错的

db.CalendarTaskEntity.insertOne(
{ 
"orgId" : "d870d3e653b43da1a3d14ef30566386d", 
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "123", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829611179), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840143671)
});

3、InsertMany

db.CalendarTaskEntity.insertMany(
[{ 
"orgId" : "d870d3e653b43da1a3d14ef30566386d", 
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "13", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829611179), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840143671)
}, 
{
"orgId" : "d870d3e653b43da1a3d14ef30566386d", 
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "12", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829704103), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840241041)
}]);

4、Save

save方法一次只能操作一条记录，操作多条的时候会报错

主键冲突时insertOne会报错，而save会直接用新值覆盖旧值

db.CalendarTaskEntity.save(
{ 
"_id": "6342741a4cb714e3c6337c55", 
"orgId" : "d870d3e653b43da1a3d14ef30566386d", 
"corpId" : "ww903454aaa2ef2240", 
"calendarId" : "13", 
"title" : "1", 
"content" : "1", 
"createPerson" : "wuweinian", 
"initiator" : "wuweinian", 
"createTime" : NumberLong(1663829611179), 
"deadline" : NumberLong(1668755206565), 
"status" : NumberInt(3), 
"isDelete" : false, 
"feedbackList" : [ { "responsiblePerson" : "15013223318", "isFeedBack" : false } ], 
"_class" : "cn.com.do1.component.calendar.model.task.po.CalendarTaskPO", 
"updatePerson" : "wuweinian", 
"updateTime" : NumberLong(1663840143671)
});

二、文档删除

db.集合名称.remove(条件)

1、删除所有数据

db.CalendarTaskEntity.remove({})

2、删除指定条件

db.CalendarTaskEntity.remove({ "_id": "6342741a4cb714e3c6337c55"});