自定义支持数组的表单网络请求

封装AFN的方法，默认不支持数组的表单请求

1.把数组从字典中拿出来

2.把数组内容转换为NSData添加到表单数据当中

+(void)postFormJava:(NSString *)url params:(NSDictionary *)params success:(void (^)(id))success failure:(void (^)(NSError *))failure{

url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSMutableDictionary *mdict = [NSMutableDictionary dictionaryWithDictionary:params];

NSMutableDictionary *mArrayDict = [NSMutableDictionary dictionaryWithCapacity:4];

for (NSString *key in params.allKeys) {

id value = mdict[key];

if ([value isKindOfClass:[NSArray class]]) {

[mArrayDict setObject:value forKey:key];

[mdict removeObjectForKey:key];

}

}

params = mdict;

// 1.获得请求管理者

AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];

//设置超时的秒数

mgr.requestSerializer.timeoutInterval = 30;

[mgr POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {

for (NSString *key in mArrayDict) {

NSArray *values = mArrayDict[key];

for (NSNumber *value in values) {

NSString *valString = [value stringValue];

NSData *data = [[NSData alloc] initWithBytes:[valString UTF8String] length:valString.length];

[formData appendPartWithFormData:data name:key];

}

}

} progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {

NSDictionary *dict;

if ([responseObject isKindOfClass:[NSDictionary class]])

{dict = [responseObject copy];

}

else{

dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];

}

success(dict);

} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

failure(error);

}];

}

请求框架字典转表单部分：

- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method

URLString:(NSString *)URLString

parameters:(NSDictionary *)parameters

constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block

error:(NSError *__autoreleasing *)error

{

NSParameterAssert(method);

NSParameterAssert(![method isEqualToString:@"GET"] && ![method isEqualToString:@"HEAD"]);

NSMutableURLRequest *mutableRequest = [self requestWithMethod:method URLString:URLString parameters:nil error:error];

__block AFStreamingMultipartFormData *formData = [[AFStreamingMultipartFormData alloc] initWithURLRequest:mutableRequest stringEncoding:NSUTF8StringEncoding];

if (parameters) {

for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {

NSData *data = nil;

if ([pair.value isKindOfClass:[NSData class]]) {

data = pair.value;

} else if ([pair.value isEqual:[NSNull null]]) {

data = [NSData data];

} else {

data = [[pair.value description] dataUsingEncoding:self.stringEncoding];

}

if (data) {

[formData appendPartWithFormData:data name:[pair.field description]];

}

}

}

if (block) {

block(formData);

}

return [formData requestByFinalizingMultipartFormData];

}