AFNetworking的特殊设置

发表于 2018-05-01 分类于杂七杂八

项目中的网络请求需要在Header中添加Authorization，并进行base64编码后请求数据。

设置SecurityPolicy

有两种情况需要设置SecurityPollicy：

使用HTTP请求，则需要在plist文件中设置允许HTTP请求，并添加host地址到白名单，但有时请求仍会被Cancel（-999错误）；
HTTPS请求，但是证书过期或无效了，请求可能被cancel

设置SecurityPolicy：

AFSecurityPolicy *securityPolicy = [AFSecurityPolicy defaultPolicy];
 securityPolicy.validatesDomainName = NO;
 securityPolicy.allowInvalidCertificates = YES;
   
 AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
 manager.securityPolicy = securityPolicy;

设置base64编码过的Authorization

在get请求时，可以使用AFHTTPSessionManager；但在post请求中AFHTTPSessionManager无法满足需要，需要使用AFURLSessionManager，并自定义Request来实现。

	//Authorization数据
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
    [dic setValue:@"IOS" forKey:@"os_type"];
    if (login) {
        if (![DDUser checkLogin]) {
            return;
        }
        [dic setValue:[DDUser mainUser].token forKey:@"token"];
        [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
    }else{
        if ([DDUser checkLogin]) {
            [dic setValue:[DDUser mainUser].token forKey:@"token"];
            [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
        }
    }
    
	//base64编码
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&error];
    NSString *str = [jsonData base64EncodedStringWithOptions:(NSDataBase64EncodingOptions)0];
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
   [manager.requestSerializer setValue:str forHTTPHeaderField:@"Authorization"];

url编码

1	NSString *getURL = [urlString stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"#%^{}\"[]\|\\<> "].invertedSet];

post请求的参数需要转成json时，需要使用AFURLSessionManager而不是AFHTTPSessionManager，需要自己来设置request的header和body

//post参数需要转成json时使用AFURLSessionManager
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    manager.securityPolicy = securityPolicy;
    
    NSMutableURLRequest *request = [[AFJSONRequestSerializer serializer] requestWithMethod:@"POST" URLString:postURL parameters:nil error:nil];
    request.timeoutInterval= 60;
    [request setValue:str forHTTPHeaderField:@"Authorization"];
    [request addValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Accept"];
    if (parameters != nil) {
    NSError *xxError;
        
    [request setHTTPBody:[NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:&xxError]];
    }
    
    [[manager dataTaskWithRequest:request uploadProgress:nil downloadProgress:nil completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {
        [self dismissHUD];
        
        if (!error) {
            if (successBlock) {
                    successBlock(responseObject);
                }
        }else{
            if (failureBlock) {
                failureBlock(error);
            }
        }
    }] resume];

设置response数据格式

//get请求
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html",@"text/plain", nil];

post方法上传图片（拼接formData），需要注意的是post的数据参数名需要跟服务端要求的参数名保持一致：

//securityPolicy	
	AFSecurityPolicy *securityPolicy = [AFSecurityPolicy defaultPolicy];
    securityPolicy.validatesDomainName = NO;
    securityPolicy.allowInvalidCertificates = YES;
    
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.securityPolicy = securityPolicy;

	//url编码
    NSString *urlStr = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

	//header数据
    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
    [dic setValue:@"IOS" forKey:@"os_type"];
    if (login) {
        if (![DDUser checkLogin]) {
            return;
        }
        [dic setValue:[DDUser mainUser].token forKey:@"token"];
        [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
    }else{
        if ([DDUser checkLogin]) {
            [dic setValue:[DDUser mainUser].token forKey:@"token"];
            [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
        }
    }
    //base64编码
    NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&error];
    NSString *str = [jsonData base64EncodedStringWithOptions:(NSDataBase64EncodingOptions)0];
	//设置请求头
    [manager.requestSerializer setValue:str forHTTPHeaderField:@"Authorization"];
    [manager.requestSerializer setValue:@"multipart/form-data" forHTTPHeaderField:@"Content-Type"];
    manager.requestSerializer.timeoutInterval = 60;
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html",@"text/plain", nil];
    [manager POST:urlStr parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        NSString *key = dataDic.allKeys.firstObject;
        NSData *data = dataDic[key];
        NSString *file = [NSString stringWithFormat:@"%@.jpeg",key];
		//注意这里的参数名跟服务端要求的参数名称保持一致
        [formData appendPartWithFileData:data name:@"editormd-image-file"//参数名
                                fileName:file mimeType:@"image/jpeg"];
        
    }
         progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
             if (successBlock) {
                 NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
                 successBlock(dict);
             }
             
         } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
             [self dismissHUD];
             if (failureBlock) {
                 failureBlock(error);
             }
         }];

使用原生post请求（需要设置base64编码过的Authorization，需要url编码，设置HTTPHeader）：

//Header数据
NSMutableDictionary *dic = [[NSMutableDictionary alloc] init];
[dic setValue:@"IOS" forKey:@"os_type"];
if (login) {
   if (![DDUser checkLogin]) {
        return;
    }
    [dic setValue:[DDUser mainUser].token forKey:@"token"];
    [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
 }else{
    if ([DDUser checkLogin]) {
        [dic setValue:[DDUser mainUser].token forKey:@"token"];
        [dic setValue:[DDUser mainUser].userId forKey:@"userId"];
    }
}

NSError *error;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&error];
    //base64编码
NSString *str = [jsonData base64EncodedStringWithOptions:(NSDataBase64EncodingOptions)0];

NSURLSession *session = [NSURLSession sharedSession];

NSURL *url = [NSURL URLWithString:urlString];

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setValue:str forHTTPHeaderField:@"Authorization"];
    [request addValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Accept"];
    
    request.HTTPMethod = @"POST";
    if (parameters != nil) {
        NSError *xxError;
        
        [request setHTTPBody:[NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:&xxError]];
    }
    
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

        if (!error) {
            if (successBlock) {
                NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
                successBlock(dic);
            }
        }else{
            if (failureBlock) {
                failureBlock(error);
                NSLog(@"请求发生错误error--->%@", error);
            }
        }
    }];

    [dataTask resume];