前言

日常開(kāi)發(fā)中筆者對(duì)于網(wǎng)絡(luò)請(qǐng)求的處理，一般是對(duì)AFNetworking封裝一個(gè)基類方法，然后在網(wǎng)絡(luò)請(qǐng)求類中調(diào)用該基類方法，這種處理方法即為集約型。
而YTKNetwork則是將每個(gè)網(wǎng)絡(luò)請(qǐng)求抽象成一個(gè)對(duì)象，每個(gè)對(duì)象都可以單獨(dú)的管理，稱為離散型。

基類封裝

在基類中我們可以全局設(shè)置超時(shí)時(shí)間、消息請(qǐng)求頭等基礎(chǔ)信息。

//WJBaseRequest.h
#import <YTKNetwork/YTKNetwork.h>
NS_ASSUME_NONNULL_BEGIN
@interface WJBaseRequest : YTKRequest
@end
NS_ASSUME_NONNULL_END

#import "WJBaseRequest.h"

@implementation WJBaseRequest

- (YTKRequestSerializerType)requestSerializerType
{
    return YTKRequestSerializerTypeJSON;
}

- (YTKResponseSerializerType)responseSerializerType
{
    return YTKResponseSerializerTypeHTTP;
}

- (NSDictionary<NSString *,NSString *> *)requestHeaderFieldValueDictionary
{
    NSMutableDictionary *headerDic = [NSMutableDictionary dictionaryWithCapacity:0];
    
    if (self.requestMethod == YTKRequestMethodGET) {
        
        NSString *usString= [WJGlobalMethod getUserAgentString];
        
        NSString *token = [WJUserInfoManager getWJLoginToken];
        token = token == nil ?@"":token;
        
        NSString *userid = [WJUserInfoManager getWJLoginUserId];
        userid = userid == nil ?@"" :userid;
        
        if([token length])
        {
            [headerDic setValue:token forKey:@"X-API-TOKEN"];
        }
        
        if([userid length])
        {
            [headerDic setValue:userid forKey:@"X-API-USERID"];
        }
        
        [headerDic setValue:usString forKey:@"User-Agent"];
        NSString * userGa = [WJGlobalMethod getUserAgentString];
        [headerDic setValue:userGa forKey:@"X-API-UA"];
        
    } else if (self.requestMethod == YTKRequestMethodPOST) {

        [headerDic setValue:@"application/x-www-form-urlencoded" forKey:@"Content-Type"];
        NSString *usString= [WJGlobalMethod getUserAgentString];
        [headerDic setValue:usString forKey:@"User-Agent"];
        NSString * userGa = [WJGlobalMethod getUserAgentString];
        [headerDic setValue:userGa forKey:@"X-API-UA"];
        
        NSString *token = [WJUserInfoManager getWJLoginToken];
        token = token == nil ?@"":token;
        
        NSString *userid = [WJUserInfoManager getWJLoginUserId];
        userid = userid == nil ?@"" :userid;
        
        if([token length])
        {
            [headerDic setValue:token forKey:@"X-API-TOKEN"];
        }
        
        if([userid length])
        {
            [headerDic setValue:userid forKey:@"X-API-USERID"];
        }
        
        [headerDic setValue:usString forKey:@"User-Agent"];
    }
    
    return headerDic;
}

//請(qǐng)求超時(shí)時(shí)間
- (NSTimeInterval)requestTimeoutInterval
{
    return 60;
}

- (void)requestFailedPreprocessor
{
    [super requestFailedPreprocessor];
    //可以在此方法內(nèi)處理token失效的情況，所有http請(qǐng)求統(tǒng)一走此方法，即會(huì)統(tǒng)一調(diào)用
    NSError * error = self.error;    
    if ([error.domain isEqualToString:AFURLResponseSerializationErrorDomain])
    {
        //AFNetworking處理過(guò)的錯(cuò)誤
        NSLog(@"AFURLResponseSerializationErrorDomain");        
    }else if ([error.domain isEqualToString:YTKRequestValidationErrorDomain])
    {
        //猿題庫(kù)處理過(guò)的錯(cuò)誤
        NSLog(@"YTKRequestValidationErrorDomain");
    }else{
        //系統(tǒng)級(jí)別的domain錯(cuò)誤，無(wú)網(wǎng)絡(luò)等[NSURLErrorDomain]
        //根據(jù)error的code去定義顯示的信息，保證顯示的內(nèi)容可以便捷的控制
        NSLog(@"RequestValidationErrorDomain");
    }
]}
@end

創(chuàng)建網(wǎng)絡(luò)請(qǐng)求

創(chuàng)建網(wǎng)絡(luò)請(qǐng)求對(duì)象

這里需要設(shè)置請(qǐng)求域名、參數(shù)等

#import "WJBaseRequest.h"
NS_ASSUME_NONNULL_BEGIN
@interface WJGetInfoApi : WJBaseRequest
- (id)initWithUserId:(NSString *)userid;
@end
NS_ASSUME_NONNULL_END

#import "WJGetInfoApi.h"
#import "WJLocationManager.h"

@implementation WJGetInfoApi{
    NSString *_userid;
}

- (id)initWithUserId:(NSString *)userid
{
    self = [super init];
    if (self) {
        _userid = userid;
    }
    return self;
}

- (NSString *)requestUrl {
   // 這里可以設(shè)置全局域名，如果設(shè)置了全局域名的話，就只需要寫(xiě)后綴如，return "/user";
    return "http://www. example.com/user/getinfo";
}

- (YTKRequestMethod)requestMethod {
    return YTKRequestMethodGET;
}

- (id)requestArgument {    
    NSString *userid = _userid;
    userid = userid == nil ?@"":userid;  
    return @{
             @"userid":_userid,
             };
}
@end

網(wǎng)絡(luò)請(qǐng)求接口調(diào)用

    WJGetInfoApi *api = [[WJGetInfoApi alloc] initWithUserId:userId];
    [api startWithCompletionBlockWithSuccess:^(YTKBaseRequest *request){
        // 數(shù)據(jù)解析
        NSDictionary *requestDict = [NSJSONSerialization JSONObjectWithData:request.responseObject options:NSJSONReadingMutableContainers error:nil];
        
    } failure:^(YTKBaseRequest *request){
         // 錯(cuò)誤處理
    }];

文件上傳

不知道是不是我的使用方法不對(duì)，當(dāng)用YTKNetwork上傳圖片的時(shí)候，YTKNetwork好像沒(méi)有特定的方法或者類來(lái)處理，筆者這里是自定義了消息體。上傳圖片時(shí)需要設(shè)置請(qǐng)求頭的“Content-Type”為@"multipart/form-data" ，并將圖片data添加到HTTP body中。

// WJUploadImageApi.h
#import "WJBaseRequest.h"
NS_ASSUME_NONNULL_BEGIN
@interface WJUploadImageApi : WJBaseRequest
- (id)initWithImage:(UIImage *)image;
@end
NS_ASSUME_NONNULL_END

#import "WJUploadImageApi.h"

@implementation WJUploadImageApi{
    UIImage *_image;
}

- (id)initWithImage:(UIImage *)image {
    self = [super init];
    if (self) {
        _image = image;
    }
    return self;
}

- (YTKRequestMethod)requestMethod {
    return YTKRequestMethodPOST;
}

- (NSString *)requestUrl {
    return "http://www. example.com/user/upload";
}

- (NSDictionary<NSString *,NSString *> *)requestHeaderFieldValueDictionary
{
    NSMutableDictionary *headerDic = [NSMutableDictionary dictionaryWithCapacity:0];
// 上傳圖片時(shí)需要設(shè)置請(qǐng)求頭的“Content-Type”為@"multipart/form-data" 
    [headerDic setValue:@"multipart/form-data" forKey:@"Content-Type"];
    NSString *usString= [WJGlobalMethod getUserAgentString];
    [headerDic setValue:usString forKey:@"User-Agent"];
    NSString * userGa = [WJGlobalMethod getUserAgentString];
    [headerDic setValue:userGa forKey:@"X-API-UA"];
    
    NSString *token = [WJUserInfoManager getWJLoginToken];
    token = token == nil ?@"":token;
    
    NSString *userid = [WJUserInfoManager getWJLoginUserId];
    userid = userid == nil ?@"" :userid;
    
    if([token length])
    {
        [headerDic setValue:token forKey:@"X-API-TOKEN"];
    }
    if([userid length])
    {
        [headerDic setValue:userid forKey:@"X-API-USERID"];
    }
    [headerDic setValue:usString forKey:@"User-Agent"];
    return headerDic;
}

// 設(shè)置HTTP body
- (AFConstructingBlock)constructingBodyBlock {
    return ^(id<AFMultipartFormData> formData) {
        NSData *data = UIImageJPEGRepresentation(_image, 0.9);
        NSString *name = @"image";
        NSString *formKey = @"attachment";
        NSString *type = @"image/jpeg";
        [formData appendPartWithFileData:data name:formKey fileName:name mimeType:type];
    };
}

- (id)jsonValidator {
    return @{ @"url": [NSString class] };
}

@end