Flutter 对于包含贴图的贴图，SQFLite（颤振）插入失败

有人能确认SQFLite是否支持包含映射的映射吗？我确实在这个网站上看到了下面的帖子，也许这就是答案

在我的情况下，我有两个模型类，我正在工作

• 房子
• 狗

House包括一个名为pets的字段，它是一个列表

我在每个类中都有一个构造函数和工厂方法，负责根据需要将映射/对象转换为映射/对象，以便发送到SQFLite并从中检索信息

模型类 狗

类狗{
最终int id；
最后的线品种；
最后的字符串名；
最终积分；
狗（{this.id，this.breed，this.name，this.age}）；
//将行插入数据库时使用，包括id字段
映射toMap（）{
最终映射=映射（）；
map['id']=id；
地图['bride']=品种；
映射['name']=名称；
地图['age']=年龄；
返回图；
}
//从数据库返回行并转换为对象时使用
工厂狗。从地图（地图数据）=>狗(
id:data['id']，
品种：数据[“品种”]，
名称：数据['name']，
年龄：数据[‘年龄’]
);
}

房子

导入“dog.dart”；
班房{
最终int id；
最后的字符串名；
最终字符串颜色；
最终宠物名单；
House（{this.id，this.name，this.color，this.pets}）；
//将行插入数据库时将使用
映射toMap（）{
最终映射=映射（）；
map['id']=id；
映射['name']=名称；
地图['color']=颜色；
如果（this.pets！=null）{
map['pets']=this.pets.map（（pet）=>pet.toMap（））.toList（）；
}
返回图；
}
//从数据库返回行并转换为对象时使用
factory House.fromMap（地图数据）{
返回屋(
id:data['id']，
名称：数据['name']，
颜色：数据['color']，
宠物：数据['pets']！=null
？（数据['pets']作为列表）.map（（pet）=>Dog.fromMap（pet））.toList（）
：null，
);
}
}

插入新房子的方法

Future<int> addNewHome(House house) async {
    // Attempt to add the house to the DB
    var client = await database.db;
    int result = await client.insert(HomesSchema.tblHomes, house.toMap(), conflictAlgorithm: ConflictAlgorithm.replace);
    _homes.add(house);
    return result;
  }

Future addNewHome（House-House）异步{
//尝试将房屋添加到DB
var client=await database.db；
int result=wait client.insert（homeschema.tblHomes，house.toMap（），conflictAlgorithm:conflictAlgorithm.replace）；
_加上（房子）；
返回结果；
}

当我尝试执行插入时，我得到以下错误

E/flutter (  586): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: DatabaseException(java.util.HashMap cannot be cast to java.lang.Integer) sql 'INSERT OR REPLACE  INTO homes (id, name, color, pets) VALUES (?, ?, ?, ?)' args [1, Smith, Green, [{name: Mackie, id: 1, breed: Rottweiler, age: 8}, {name: Tanner, id: 2, breed: Mastiff, age: 8}]]}
E/flutter (  586): #0      wrapDatabaseException (package:sqflite/src/exception_impl.dart:12:7)
E/flutter (  586): <asynchronous suspension>
E/flutter (  586): #1      SqfliteDatabaseFactoryImpl.wrapDatabaseException (package:sqflite/src/factory_impl.dart:25:7)
E/flutter (  586): #2      SqfliteDatabaseMixin.safeInvokeMethod (package:sqflite/src/database_mixin.dart:188:15)
E/flutter (  586): #3      SqfliteDatabaseMixin.txnRawInsert.<anonymous closure> (package:sqflite/src/database_mixin.dart:363:14)
E/flutter (  586): #4      SqfliteDatabaseMixin.txnSynchronized.<anonymous closure> (package:sqflite/src/database_mixin.dart:307:22)
E/flutter (  586): #5      BasicLock.synchronized (package:synchronized/src/basic_lock.dart:32:26)
E/flutter (  586): #6      SqfliteDatabaseMixin.txnSynchronized (package:sqflite/src/database_mixin.dart:303:43)
E/flutter (  586): #7      SqfliteDatabaseMixin.txnWriteSynchronized (package:sqflite/src/database_mixin.dart:325:7)
E/flutter (  586): #8      SqfliteDatabaseMixin.txnRawInsert (package:sqflite/src/database_mixin.dart:362:12)
E/flutter (  586): #9      SqfliteDatabaseExecutorMixin.rawInsert (package:sqflite/src/database_mixin.dart:49:15)
E/flutter (  586): #10     SqfliteDatabaseExecutorMixin.insert (package:sqflite/src/database_mixin.dart:59:12)
E/flutter (  586): #11     Homes.addNewHome (package:search_list_view/providers/homes.dart:19:31)
E/flutter (  586): <asynchronous suspension>
E/flutter (  586): #12     _MyAppState.build.<anonymous closure> (package:search_list_view/main.dart:95:26)
E/flutter (  586): #13     _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:706:14)
E/flutter (  586): #14     _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:789:36)
E/flutter (  586): #15     GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (  586): #16     TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:486:11)
E/flutter (  586): #17     BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:264:5)
E/flutter (  586): #18     BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:199:7)
E/flutter (  586): #19     PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:467:9)
E/flutter (  586): #20     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76:12)
E/flutter (  586): #21     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:117:9)
E/flutter (  586): #22     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
E/flutter (  586): #23     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:115:18)
E/flutter (  586): #24     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:7)
E/flutter (  586): #25     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19)
E/flutter (  586): #26     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (  586): #27     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (  586): #28     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (  586): #29     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (  586): #30     _rootRunUnary (dart:async/zone.dart:1138:13)
E/flutter (  586): #31     _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (  586): #32     _CustomZone.runUnaryGuarded (dart:async/zone.dart:933:7)
E/flutter (  586): #33     _invoke1 (dart:ui/hooks.dart:273:10)
E/flutter (  586): #34     _dispatchPointerDataPacket (dart:ui/hooks.dart:182:5)
E/flutter (  586): 

E/flatter（586）：[ERROR:flatter/lib/ui/ui\u dart\u state.cc（157）]未处理的异常：数据库异常（java.util.HashMap不能转换为java.lang.Integer）sql“插入或替换到家庭（id、名称、颜色、宠物）值（？，，？）”args[1，Smith，Green，[{姓名：Mackie，id:1，品种：Rotweiler，年龄：8}，{姓名：坦纳，身份证：2，品种：獒，年龄：8}]}
E/flatter（586）：#0 wrapDatabaseException（包：sqflite/src/exception_impl.dart:12:7）
E/颤振（586）：
E/颤振（586）：#1 SqfliteDatabaseFactoryImpl.wrapDatabaseException（包：sqflite/src/factory\u impl.dart:25:7）
E/flatter（586）：#2 SqfliteDatabaseMixin.safeInvokeMethod（包：sqflite/src/database_mixin.dart:188:15）
E/颤振（586）：#3 sqflitedDatabaseMixin.txnRawInsert。（软件包：sqflite/src/database_mixin.dart:363:14）
E/颤振（586）：#4 SqfliteDatabaseMixin.txn同步。（软件包：sqflite/src/database_mixin.dart:307:22）
E/flatter（586）：#5 BasicLock.synchronized（包：synchronized/src/basic_lock.dart:32:26）
E/颤振（586）：#6 SqfliteDatabaseMixin.txn已同步（包：sqflite/src/database_mixin.dart:303:43）
E/flatter（586）：#7 SqfliteDatabaseMixin.txnWriteSynchronized（包：sqflite/src/database_mixin.dart:325:7）
E/颤振（586）：#8 SqfliteDatabaseMixin.txnRawInsert（包装：sqflite/src/database_mixin.dart:362:12）
E/flatter（586）：#9 SqfliteDatabaseExecutorMixin.rawsert（包：sqflite/src/database_mixin.dart:49:15）
E/flatter（586）：#10 SqfliteDatabaseExecutorMixin.insert（包：sqflite/src/database_mixin.dart:59:12）
E/flatter（586）：#11 Homes.addNewHome（包：search_list_view/providers/Homes.dart:19:31）
E/颤振（586）：
E/颤振（586）：#12 _MyAppState.build。（软件包：搜索列表视图/main.dart:95:26）
E/颤振（586）：#13InkResponseEstate.handleTap（包装：颤振/src/材料/墨水井。省道：706:14）
E/颤振（586）：#14#。（包装：颤振/src/材料/墨水井。省道：789:36）
E/flatter（586）：#15 GestureRecognizer.invokeCallback（包：flatter/src/signatures/recognizer.dart:182:24）
E/flatter（586）：#16 TapGestureRecognitor.handleTapUp（包：flatter/src/signatures/tap.dart:486:11）
E/flatter（586）：#17 BaseTapgestureRecognitor.#检查（软件包：flatter/src/signatures/tap.dart:264:5）
E/flatter（586）：#18 BaseTapgestureRecognitor.handlePrimaryPointer（包：flatter/src/signatures/tap.dart:199:7）
E/颤振（586）：#19 PrimaryPointerGestureRecognizer.handleEvent（包：颤振/src/signatures/recognizer.dart:467:9）
E/flatter（586）：#20点路由器。#调度（包：flatter/src/signatures/pointer#u路由器。dart:76:12）
E/颤振（586）：#21点外部。#调度事件路线。（包装：颤振/src/signatures/pointer_router.省道：117:9）
E/flatter（586）：#22 LinkedHashMapMixin.forEach（dart:collection patch/compact_hash.dart:379:8）
E/flatter（586）：#23点路由器。#调度事件路由（包：flatter/src/signatures/pointer#路由器。dart:115:18）
E/flatter（586）：#24 PointerRouter.route（包：flatter/src/signatures/pointer_router.dart:101:7）
E/flatter（586）：#25 GestureBinding.handleEvent（包装：flatter/src/signatures/binding.dart:218:19）
E/flatter（586）：#26 GestureBinding.dispatchEvent（包：flatter/src/signatures/binding.dart:198:22）
电子/颤振（586）：#27手势绑定。#手持指针事件（包装：颤振/src/手势/绑定。省道：156:7）
E/flatter（586）：#28手势绑定。(u flushPointerEventQueue（包：flatter/src/signatures/binding.d
Future<int> addNewHome(House house) async {
    // Attempt to add the house to the DB
    var client = await database.db;
    int result = await client.insert(HomesSchema.tblHomes, house.toMap(), conflictAlgorithm: ConflictAlgorithm.replace);
    _homes.add(house);
    return result;
  }

E/flutter (  586): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: DatabaseException(java.util.HashMap cannot be cast to java.lang.Integer) sql 'INSERT OR REPLACE  INTO homes (id, name, color, pets) VALUES (?, ?, ?, ?)' args [1, Smith, Green, [{name: Mackie, id: 1, breed: Rottweiler, age: 8}, {name: Tanner, id: 2, breed: Mastiff, age: 8}]]}
E/flutter (  586): #0      wrapDatabaseException (package:sqflite/src/exception_impl.dart:12:7)
E/flutter (  586): <asynchronous suspension>
E/flutter (  586): #1      SqfliteDatabaseFactoryImpl.wrapDatabaseException (package:sqflite/src/factory_impl.dart:25:7)
E/flutter (  586): #2      SqfliteDatabaseMixin.safeInvokeMethod (package:sqflite/src/database_mixin.dart:188:15)
E/flutter (  586): #3      SqfliteDatabaseMixin.txnRawInsert.<anonymous closure> (package:sqflite/src/database_mixin.dart:363:14)
E/flutter (  586): #4      SqfliteDatabaseMixin.txnSynchronized.<anonymous closure> (package:sqflite/src/database_mixin.dart:307:22)
E/flutter (  586): #5      BasicLock.synchronized (package:synchronized/src/basic_lock.dart:32:26)
E/flutter (  586): #6      SqfliteDatabaseMixin.txnSynchronized (package:sqflite/src/database_mixin.dart:303:43)
E/flutter (  586): #7      SqfliteDatabaseMixin.txnWriteSynchronized (package:sqflite/src/database_mixin.dart:325:7)
E/flutter (  586): #8      SqfliteDatabaseMixin.txnRawInsert (package:sqflite/src/database_mixin.dart:362:12)
E/flutter (  586): #9      SqfliteDatabaseExecutorMixin.rawInsert (package:sqflite/src/database_mixin.dart:49:15)
E/flutter (  586): #10     SqfliteDatabaseExecutorMixin.insert (package:sqflite/src/database_mixin.dart:59:12)
E/flutter (  586): #11     Homes.addNewHome (package:search_list_view/providers/homes.dart:19:31)
E/flutter (  586): <asynchronous suspension>
E/flutter (  586): #12     _MyAppState.build.<anonymous closure> (package:search_list_view/main.dart:95:26)
E/flutter (  586): #13     _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:706:14)
E/flutter (  586): #14     _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:789:36)
E/flutter (  586): #15     GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (  586): #16     TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:486:11)
E/flutter (  586): #17     BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:264:5)
E/flutter (  586): #18     BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:199:7)
E/flutter (  586): #19     PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:467:9)
E/flutter (  586): #20     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:76:12)
E/flutter (  586): #21     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:117:9)
E/flutter (  586): #22     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:379:8)
E/flutter (  586): #23     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:115:18)
E/flutter (  586): #24     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101:7)
E/flutter (  586): #25     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19)
E/flutter (  586): #26     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (  586): #27     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (  586): #28     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (  586): #29     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (  586): #30     _rootRunUnary (dart:async/zone.dart:1138:13)
E/flutter (  586): #31     _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (  586): #32     _CustomZone.runUnaryGuarded (dart:async/zone.dart:933:7)
E/flutter (  586): #33     _invoke1 (dart:ui/hooks.dart:273:10)
E/flutter (  586): #34     _dispatchPointerDataPacket (dart:ui/hooks.dart:182:5)
E/flutter (  586): 

   class Menu {

   @JsonKey(name: "status")
   String status;
   @JsonKey(name: "data")
   MenuListData menuListData;

   Menu(this.status, this.menuListData);
   factory Menu.fromJson(Map<String,dynamic> 
   json)=>_$MenuFromJson(json);
   Map<String, dynamic> toJson() => _$MenuToJson(this);

 }

   Menue menuList =
    await getIt<LiveMenuRepository>().getMenuResponse(menuPost);

    //decode the response to String format
    String menuResponseString = jsonEncode(menuList);

    //convert the string to Map of <String,dynamic> format

    Map<String, dynamic> menuResponseMap = {"menu": menuResponseString};

    //store this Map response in to local database
    int menuStored = await getIt<LocalMenuRepository>().insertMenuResponseData(menuResponseMap);

Future<int> insertMenuResponseData(Map<String,dynamic> menuResponse) async {
final db = await dbProvider.database;
var result = db.insert(menuTable, menuResponse);
return result;
}

final Map<String, dynamic> menuList = await getIt<LocalMenuRepository>().getMenuResponseString();
  //  if(menuList!=null) {
      menuList.forEach((key, value) {
        if (key == "menu") {
          storedMenu = value ;
        }
      });
      //decode the string back to Map Object
      final dynamic menuMap = jsonDecode(storedMenu);

      //getting the Menu object using fromJson method

      final Menu menuListNameResponse = Menu
          .fromJson(menuMap as Map<String,dynamic>);

Future<Map<String,dynamic>> getMenuResponse() async {
final db = await dbProvider.database;

List<Map<String, dynamic>> result;

result = await db.rawQuery('SELECT * FROM $menuTable');
// print(result[0]);

if (result.length > 0) {

  return result[0];
}
return null;
}