JSONModel和MJExtension的使用和區(qū)別

JSONModel的使用

添加JSONModel到你的項目

地址：https://github.com/jsonmodel/jsonmodel

方法一

CocoaPods
pod 'JSONModel'

方法二

下載JSONModel源文件
拷貝到項目中
導(dǎo)入SystemConfiguration.framework框架

使用--參考github上JSONModel的README.md翻譯

{ "id": "10", "country": "Germany", "dialCode": 49, "isInEurope": true }

  • 為你的數(shù)據(jù)模型創(chuàng)建一個Objective-C的類，繼承自JSONModel.
  • 將JSON中的keys在.h文件中聲明為屬性:
#import "JSONModel.h"

@interface CountryModel : JSONModel

@property (assign, nonatomic) int id;
@property (strong, nonatomic) NSString* country;
@property (strong, nonatomic) NSString* dialCode;
@property (assign, nonatomic) BOOL isInEurope;

@end

在.m文件中不需要任何操作

  • 用數(shù)據(jù)初始化你的model:
#import "CountryModel.h"
...
NSString* json = (fetch here JSON from Internet) ...
NSError* err = nil;
CountryModel* country = [[CountryModel alloc] initWithString:json error:&err];

如果傳過來的JSON合法，你所定義的所有的屬性都會與該JSON的值相對應(yīng)，甚至JSONModel會嘗試去轉(zhuǎn)換數(shù)據(jù)為你期望的類型，如上所示:

  • 轉(zhuǎn)換id,從字符串轉(zhuǎn)換為int
  • 只需要拷貝一下country的值
  • 轉(zhuǎn)換diaCode,從number轉(zhuǎn)換為字符串
  • 最后一個是將isInEurope轉(zhuǎn)換為BOOL屬性
    所以，你所需要做的就是將你的屬性定義為期望的類型即可。

例子

命名自動匹配

{
  "id": "123",
  "name": "Product name",
  "price": 12.95
}

@interface ProductModel : JSONModel
@property (assign, nonatomic) int id;
@property (strong, nonatomic) NSString* name;
@property (assign, nonatomic) float price;
@end

@implementation ProductModel
@end

嵌套model

{
  "order_id": 104,
  "total_price": 13.45,
  "product" : {
        "id": "123",
        "name": "Product name",
        "price": 12.95
  }
}

@interface OrderModel : JSONModel
@property (assign, nonatomic) int order_id;
@property (assign, nonatomic) float total_price;
@property (strong, nonatomic) ProductModel* product;
@end

@implementation OrderModel
@end

model數(shù)組（集合）

{
    "orderId": 104,
    "totalPrice": 103.45,
    "products": [
        {
            "id": 123,
            "name": "Product #1",
            "price": 12.95
        },
        {
            "id": 137,
            "name": "Product #2",
            "price": 82.95
        }
    ]
}

@protocol ProductModel;

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString *name;
@property (nonatomic) float price;
@end

@interface OrderModel : JSONModel
@property (nonatomic) NSInteger orderId;
@property (nonatomic) float totalPrice;
@property (nonatomic) NSArray <ProductModel> *products;
@end

注意: 尖括號后 <code>NSArray</code> 包含一個協(xié)議. 這跟Objective-C原生的泛型不是一個概念. 他們不會沖突, 但對于JSONModel來說,協(xié)議必須在一個地方聲明。

當(dāng)然也可以這樣

@interface OrderModel : JSONModel
@property (nonatomic) NSInteger orderId;
@property (nonatomic) float totalPrice;
@property (nonatomic) NSArray<ProductModel *> <ProductModel> *products;
@end

嵌套key mapping

{
    "orderId": 104,
    "orderDetails": {
        "name": "Product #1",
        "price": {
            "usd": 12.95
        }
    }
}

@interface OrderModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString *productName;
@property (nonatomic) float price;
@end

@implementation OrderModel

+ (JSONKeyMapper *)keyMapper
{
    return [[JSONKeyMapper alloc] initWithModelToJSONDictionary:@{
        @"id": @"orderId",
        @"productName": @"orderDetails.name",
        @"price": @"orderDetails.price.usd"
    }];
}
@end

設(shè)置下劃線字段名自動轉(zhuǎn)駝峰字段名

{
  "order_id": 104,
  "order_product" : @"Product#1",
  "order_price" : 12.95
}

@interface OrderModel : JSONModel
@property (nonatomic) NSInteger orderId;
@property (nonatomic) NSString *orderProduct;
@property (nonatomic) float orderPrice;
@end

@implementation OrderModel

+ (JSONKeyMapper *)keyMapper
{
    return [JSONKeyMapper mapperForSnakeCase];
}

@end

可選屬性 (就是說這個屬性可以為null或者為空)

{
    "id": 123,
    "name": null,
    "price": 12.95
}

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString <Optional> *name;
@property (nonatomic) float price;
@property (nonatomic) NSNumber <Optional> *uuid;
@end

忽略屬性 (就是完全忽略這個屬性)

{
    "id": 123,
    "name": null
}

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString <Ignore> *customProperty;
@end

設(shè)置所有的屬性為可選(所有屬性值可以為空)

{
    "id": null
}

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@end

@implementation ProductModel

+ (BOOL)propertyIsOptional:(NSString *)propertyName
{
    if ([propertyName isEqualToString:@"id"])
        return YES;

    return NO;
}

@end

將model轉(zhuǎn)化為字典或者json字符串

ProductModel *pm = [ProductModel new];
pm.name = @"Some Name";

// convert to dictionary
NSDictionary *dict = [pm toDictionary];

// convert to json
NSString *string = [pm toJSONString];

自定義數(shù)據(jù)轉(zhuǎn)換

@interface JSONValueTransformer (CustomNSDate)
@end

@implementation JSONValueTransformer (CustomTransformer)

- (NSDate *)NSDateFromNSString:(NSString *)string
{
    NSDateFormatter *formatter = [NSDateFormatter new];
    formatter.dateFormat = APIDateFormat;
    return [formatter dateFromString:string];
}

- (NSString *)JSONObjectFromNSDate:(NSDate *)date
{
    NSDateFormatter *formatter = [NSDateFormatter new];
    formatter.dateFormat = APIDateFormat;
    return [formatter stringFromDate:date];
}

@end

自定義getters和setters

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString *name;
@property (nonatomic) float price;
@property (nonatomic) NSLocale *locale;
@end

@implementation ProductModel

- (void)setLocaleWithNSString:(NSString *)string
{
    self.locale = [NSLocale localeWithLocaleIdentifier:string];
}

- (void)setLocaleWithNSDictionary:(NSDictionary *)dictionary
{
    self.locale = [NSLocale localeWithLocaleIdentifier:dictionary[@"identifier"]];
}

- (NSString *)JSONObjectForLocale
{
    return self.locale.localeIdentifier;
}

@end

自定義JSON校驗

@interface ProductModel : JSONModel
@property (nonatomic) NSInteger id;
@property (nonatomic) NSString *name;
@property (nonatomic) float price;
@property (nonatomic) NSLocale *locale;
@property (nonatomic) NSNumber <Ignore> *minNameLength;
@end

@implementation ProductModel

- (BOOL)validate:(NSError **)error
{
    if (![super validate:error])
        return NO;

    if (self.name.length < self.minNameLength.integerValue)
    {
        *error = [NSError errorWithDomain:@"me.mycompany.com" code:1 userInfo:nil];
        return NO;
    }

    return YES;
}

@end

相關(guān)文檔、教程和網(wǎng)站

在線閱讀文檔: http://cocoadocs.org/docsets/JSONModel
官方網(wǎng)站: http://www.jsonmodel.com
在線文檔: http://jsonmodel.com/docs/
Json校驗https://www.json.cn/

MJExtension的使用

Features【能做什么】

  • MJExtension是一套字典和模型之間互相轉(zhuǎn)換的超輕量級框架
  • JSON --> Model、Core Data Model
  • JSONString --> Model、Core Data Model
  • Model、Core Data Model --> JSON
  • JSON Array --> Model Array、Core Data Model Array
  • JSONString --> Model Array、Core Data Model Array
  • Model Array、Core Data Model Array --> JSON Array
  • Coding all properties of a model with only one line of code.
    • 只需要一行代碼，就能實現(xiàn)模型的所有屬性進行Coding（歸檔和解檔）

Installation【安裝】

From CocoaPods【使用CocoaPods】

pod 'MJExtension'

Manually【手動導(dǎo)入】

  • Drag all source files under folder MJExtension to your project.【將MJExtension文件夾中的所有源代碼拽入項目中】
  • Import the main header file：#import "MJExtension.h"【導(dǎo)入主頭文件：#import "MJExtension.h"】
MJExtension.h
MJConst.h               MJConst.m
MJFoundation.h          MJFoundation.m
MJProperty.h            MJProperty.m
MJType.h                MJType.m
NSObject+MJCoding.h     NSObject+MJCoding.m
NSObject+MJProperty.h   NSObject+MJProperty.m
NSObject+MJKeyValue.h   NSObject+MJKeyValue.m

Examples【示例】

The most simple JSON -> Model【最簡單的字典轉(zhuǎn)模型】

typedef enum {
    SexMale,
    SexFemale
} Sex;

@interface User : NSObject
@property (copy, nonatomic) NSString *name;
@property (copy, nonatomic) NSString *icon;
@property (assign, nonatomic) unsigned int age;
@property (copy, nonatomic) NSString *height;
@property (strong, nonatomic) NSNumber *money;
@property (assign, nonatomic) Sex sex;
@property (assign, nonatomic, getter=isGay) BOOL gay;
@end

/***********************************************/

NSDictionary *dict = @{
    @"name" : @"Jack",
    @"icon" : @"lufy.png",
    @"age" : @20,
    @"height" : @"1.55",
    @"money" : @100.9,
    @"sex" : @(SexFemale),
    @"gay" : @"true"
//   @"gay" : @"1"
//   @"gay" : @"NO"
};

// JSON -> User
User *user = [User mj_objectWithKeyValues:dict];

NSLog(@"name=%@, icon=%@, age=%zd, height=%@, money=%@, sex=%d, gay=%d", user.name, user.icon, user.age, user.height, user.money, user.sex, user.gay);
// name=Jack, icon=lufy.png, age=20, height=1.550000, money=100.9, sex=1

JSONString -> Model【JSON字符串轉(zhuǎn)模型】

// 1.Define a JSONString
NSString *jsonString = @"{\"name\":\"Jack\", \"icon\":\"lufy.png\", \"age\":20}";

// 2.JSONString -> User
User *user = [User mj_objectWithKeyValues:jsonString];

// 3.Print user's properties
NSLog(@"name=%@, icon=%@, age=%d", user.name, user.icon, user.age);
// name=Jack, icon=lufy.png, age=20

Model contains model【模型中嵌套模型】

@interface Status : NSObject
@property (copy, nonatomic) NSString *text;
@property (strong, nonatomic) User *user;
@property (strong, nonatomic) Status *retweetedStatus;
@end

/***********************************************/

NSDictionary *dict = @{
    @"text" : @"Agree!Nice weather!",
    @"user" : @{
        @"name" : @"Jack",
        @"icon" : @"lufy.png"
    },
    @"retweetedStatus" : @{
        @"text" : @"Nice weather!",
        @"user" : @{
            @"name" : @"Rose",
            @"icon" : @"nami.png"
        }
    }
};

// JSON -> Status
Status *status = [Status mj_objectWithKeyValues:dict];

NSString *text = status.text;
NSString *name = status.user.name;
NSString *icon = status.user.icon;
NSLog(@"text=%@, name=%@, icon=%@", text, name, icon);
// text=Agree!Nice weather!, name=Jack, icon=lufy.png

NSString *text2 = status.retweetedStatus.text;
NSString *name2 = status.retweetedStatus.user.name;
NSString *icon2 = status.retweetedStatus.user.icon;
NSLog(@"text2=%@, name2=%@, icon2=%@", text2, name2, icon2);
// text2=Nice weather!, name2=Rose, icon2=nami.png

Model contains model-array【模型中有個數(shù)組屬性，數(shù)組里面又要裝著其他模型】

@interface Ad : NSObject
@property (copy, nonatomic) NSString *image;
@property (copy, nonatomic) NSString *url;
@end

@interface StatusResult : NSObject
/** Contatins status model */
@property (strong, nonatomic) NSMutableArray *statuses;
/** Contatins ad model */
@property (strong, nonatomic) NSArray *ads;
@property (strong, nonatomic) NSNumber *totalNumber;
@end

/***********************************************/

// Tell MJExtension what type of model will be contained in statuses and ads.
[StatusResult mj_setupObjectClassInArray:^NSDictionary *{
    return @{
               @"statuses" : @"Status",
               // @"statuses" : [Status class],
               @"ads" : @"Ad"
               // @"ads" : [Ad class]
           };
}];
// Equals: StatusResult.m implements +mj_objectClassInArray method.

NSDictionary *dict = @{
    @"statuses" : @[
                      @{
                          @"text" : @"Nice weather!",
                          @"user" : @{
                              @"name" : @"Rose",
                              @"icon" : @"nami.png"
                          }
                      },
                      @{
                          @"text" : @"Go camping tomorrow!",
                          @"user" : @{
                              @"name" : @"Jack",
                              @"icon" : @"lufy.png"
                          }
                      }
                  ],
    @"ads" : @[
                 @{
                     @"image" : @"ad01.png",
                     @"url" : @"http://www.ad01.com"
                 },
                 @{
                     @"image" : @"ad02.png",
                     @"url" : @"http://www.ad02.com"
                 }
             ],
    @"totalNumber" : @"2014"
};

// JSON -> StatusResult
StatusResult *result = [StatusResult mj_objectWithKeyValues:dict];

NSLog(@"totalNumber=%@", result.totalNumber);
// totalNumber=2014

// Printing
for (Status *status in result.statuses) {
    NSString *text = status.text;
    NSString *name = status.user.name;
    NSString *icon = status.user.icon;
    NSLog(@"text=%@, name=%@, icon=%@", text, name, icon);
}
// text=Nice weather!, name=Rose, icon=nami.png
// text=Go camping tomorrow!, name=Jack, icon=lufy.png

// Printing
for (Ad *ad in result.ads) {
    NSLog(@"image=%@, url=%@", ad.image, ad.url);
}
// image=ad01.png, url=http://www.ad01.com
// image=ad02.png, url=http://www.ad02.com

Model name - JSON key mapping【模型中的屬性名和字典中的key不相同(或者需要多級映射)】

@interface Bag : NSObject
@property (copy, nonatomic) NSString *name;
@property (assign, nonatomic) double price;
@end

@interface Student : NSObject
@property (copy, nonatomic) NSString *ID;
@property (copy, nonatomic) NSString *desc;
@property (copy, nonatomic) NSString *nowName;
@property (copy, nonatomic) NSString *oldName;
@property (copy, nonatomic) NSString *nameChangedTime;
@property (strong, nonatomic) Bag *bag;
@end

/***********************************************/

// How to map
[Student mj_setupReplacedKeyFromPropertyName:^NSDictionary *{
    return @{
               @"ID" : @"id",
               @"desc" : @"description",
               @"oldName" : @"name.oldName",
               @"nowName" : @"name.newName",
               @"nameChangedTime" : @"name.info[1].nameChangedTime",
               @"bag" : @"other.bag"
           };
}];
// Equals: Student.m implements +mj_replacedKeyFromPropertyName method.

NSDictionary *dict = @{
    @"id" : @"20",
    @"description" : @"kids",
    @"name" : @{
        @"newName" : @"lufy",
        @"oldName" : @"kitty",
        @"info" : @[
                 @"test-data",
                 @{
                             @"nameChangedTime" : @"2013-08"
                         }
                  ]
    },
    @"other" : @{
        @"bag" : @{
            @"name" : @"a red bag",
            @"price" : @100.7
        }
    }
};

// JSON -> Student
Student *stu = [Student mj_objectWithKeyValues:dict];

// Printing
NSLog(@"ID=%@, desc=%@, oldName=%@, nowName=%@, nameChangedTime=%@",
      stu.ID, stu.desc, stu.oldName, stu.nowName, stu.nameChangedTime);
// ID=20, desc=kids, oldName=kitty, nowName=lufy, nameChangedTime=2013-08
NSLog(@"bagName=%@, bagPrice=%f", stu.bag.name, stu.bag.price);
// bagName=a red bag, bagPrice=100.700000

JSON array -> model array【將一個字典數(shù)組轉(zhuǎn)成模型數(shù)組】

NSArray *dictArray = @[
                         @{
                             @"name" : @"Jack",
                             @"icon" : @"lufy.png"
                         },
                         @{
                             @"name" : @"Rose",
                             @"icon" : @"nami.png"
                         }
                     ];

// JSON array -> User array
NSArray *userArray = [User mj_objectArrayWithKeyValuesArray:dictArray];

// Printing
for (User *user in userArray) {
    NSLog(@"name=%@, icon=%@", user.name, user.icon);
}
// name=Jack, icon=lufy.png
// name=Rose, icon=nami.png

Model -> JSON【將一個模型轉(zhuǎn)成字典】

// New model
User *user = [[User alloc] init];
user.name = @"Jack";
user.icon = @"lufy.png";

Status *status = [[Status alloc] init];
status.user = user;
status.text = @"Nice mood!";

// Status -> JSON
NSDictionary *statusDict = status.mj_keyValues;
NSLog(@"%@", statusDict);
/*
 {
 text = "Nice mood!";
 user =     {
 icon = "lufy.png";
 name = Jack;
 };
 }
 */

// More complex situation
Student *stu = [[Student alloc] init];
stu.ID = @"123";
stu.oldName = @"rose";
stu.nowName = @"jack";
stu.desc = @"handsome";
stu.nameChangedTime = @"2018-09-08";

Bag *bag = [[Bag alloc] init];
bag.name = @"a red bag";
bag.price = 205;
stu.bag = bag;

NSDictionary *stuDict = stu.mj_keyValues;
NSLog(@"%@", stuDict);
/*
{
    ID = 123;
    bag =     {
        name = "\U5c0f\U4e66\U5305";
        price = 205;
    };
    desc = handsome;
    nameChangedTime = "2018-09-08";
    nowName = jack;
    oldName = rose;
}
 */

Model array -> JSON array【將一個模型數(shù)組轉(zhuǎn)成字典數(shù)組】

// New model array
User *user1 = [[User alloc] init];
user1.name = @"Jack";
user1.icon = @"lufy.png";

User *user2 = [[User alloc] init];
user2.name = @"Rose";
user2.icon = @"nami.png";

NSArray *userArray = @[user1, user2];

// Model array -> JSON array
NSArray *dictArray = [User mj_keyValuesArrayWithObjectArray:userArray];
NSLog(@"%@", dictArray);
/*
 (
 {
 icon = "lufy.png";
 name = Jack;
 },
 {
 icon = "nami.png";
 name = Rose;
 }
 )
 */

Core Data

NSDictionary *dict = @{
                         @"name" : @"Jack",
                         @"icon" : @"lufy.png",
                         @"age" : @20,
                         @"height" : @1.55,
                         @"money" : @"100.9",
                         @"sex" : @(SexFemale),
                         @"gay" : @"true"
                     };

// This demo just provide simple steps
NSManagedObjectContext *context = nil;
User *user = [User mj_objectWithKeyValues:dict context:context];

[context save:nil];

Coding

#import "MJExtension.h"

@implementation Bag
// NSCoding Implementation
MJExtensionCodingImplementation
@end

/***********************************************/

// what properties not to be coded
[Bag mj_setupIgnoredCodingPropertyNames:^NSArray *{
    return @[@"name"];
}];
// Equals: Bag.m implements +mj_ignoredCodingPropertyNames method.

// Create model
Bag *bag = [[Bag alloc] init];
bag.name = @"Red bag";
bag.price = 200.8;

NSString *file = [NSHomeDirectory() stringByAppendingPathComponent:@"Desktop/bag.data"];
// Encoding
[NSKeyedArchiver archiveRootObject:bag toFile:file];

// Decoding
Bag *decodedBag = [NSKeyedUnarchiver unarchiveObjectWithFile:file];
NSLog(@"name=%@, price=%f", decodedBag.name, decodedBag.price);
// name=(null), price=200.800000

Camel -> underline【統(tǒng)一轉(zhuǎn)換屬性名（比如駝峰轉(zhuǎn)下劃線）】

// Dog
#import "MJExtension.h"

@implementation Dog
+ (NSString *)mj_replacedKeyFromPropertyName121:(NSString *)propertyName
{
    // nickName -> nick_name
    return [propertyName mj_underlineFromCamel];
}
@end

// NSDictionary
NSDictionary *dict = @{
                       @"nick_name" : @"旺財",
                       @"sale_price" : @"10.5",
                       @"run_speed" : @"100.9"
                       };
// NSDictionary -> Dog
Dog *dog = [Dog mj_objectWithKeyValues:dict];

// printing
NSLog(@"nickName=%@, scalePrice=%f runSpeed=%f", dog.nickName, dog.salePrice, dog.runSpeed);

NSString -> NSDate, nil -> @""【過濾字典的值（比如字符串日期處理為NSDate、字符串nil處理為@""）】

// Book
#import "MJExtension.h"

@implementation Book
- (id)mj_newValueFromOldValue:(id)oldValue property:(MJProperty *)property
{
    if ([property.name isEqualToString:@"publisher"]) {
        if (oldValue == nil) return @"";
    } else if (property.type.typeClass == [NSDate class]) {
        NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
        fmt.dateFormat = @"yyyy-MM-dd";
        return [fmt dateFromString:oldValue];
    }

    return oldValue;
}
@end

// NSDictionary
NSDictionary *dict = @{
                       @"name" : @"5分鐘突破iOS開發(fā)",
                       @"publishedTime" : @"2011-09-10"
                       };
// NSDictionary -> Book
Book *book = [Book mj_objectWithKeyValues:dict];

// printing
NSLog(@"name=%@, publisher=%@, publishedTime=%@", book.name, book.publisher, book.publishedTime);

兩者時間的區(qū)別和總結(jié)

1.JSONModel各方面都挺好的，唯一需要注意的地方是它歸檔的方式, 它不是將對象歸檔，而是轉(zhuǎn)換成字典再歸檔
2.JSONModel使用時需要創(chuàng)建的model類繼承JSONModel
3.MJExtension使用時并不需要繼承，其對父類的依賴性更少

相關(guān)文檔和網(wǎng)站

源碼地址： https://github.com/CoderMJLee/MJExtension
Json校驗：https://www.json.cn/

?著作權(quán)歸作者所有,轉(zhuǎn)載或內(nèi)容合作請聯(lián)系作者
【社區(qū)內(nèi)容提示】社區(qū)部分內(nèi)容疑似由AI輔助生成，瀏覽時請結(jié)合常識與多方信息審慎甄別。
平臺聲明：文章內(nèi)容（如有圖片或視頻亦包括在內(nèi)）由作者上傳并發(fā)布，文章內(nèi)容僅代表作者本人觀點，簡書系信息發(fā)布平臺，僅提供信息存儲服務(wù)。

相關(guān)閱讀更多精彩內(nèi)容

  • 發(fā)現(xiàn) 關(guān)注 消息 iOS 第三方庫、插件、知名博客總結(jié) 作者大灰狼的小綿羊哥哥關(guān)注 2017.06.26 09:4...
    肇東周閱讀 15,508評論 4贊 61
  • 世界上轉(zhuǎn)換速度最快、使用最簡單方便的字典轉(zhuǎn)模型框架 能做什么？ MJExtension是一套字典和模型之間互相轉(zhuǎn)換...
    今年27閱讀 861評論 0贊 1
  • Swift版本點擊這里歡迎加入QQ群交流: 594119878最新更新日期：18-09-17 About A cu...
    ylgwhyh閱讀 26,250評論 7贊 249
  • 1、我是掙扎著從床上爬起來想寫點東西，但是不知道該些什么，于是拿起手機，刷了一會兒公眾號，等我放下手機，再看電腦屏...
    張一二的一二閱讀 426評論 0贊 1
  • 新年的第二天 紅日依舊升起 向人們彰顯著新年的氣息 放假戰(zhàn)備的日子 哪怕是傳統(tǒng)的節(jié)日 我們還在戰(zhàn)備 愿你們能過愉快的
    似冰的夢閱讀 388評論 0贊 1

友情鏈接更多精彩內(nèi)容