AFNetWoring真的是一个很好用的三方，但是在使用到自己的项目中时，可以适当的进行封装代码，现在网上的关于AFN的封装一抓一大堆，这边仅作为自己的参考。
需要特别注意的使，我在使用AFN的过程中，会出现DNS劫持的情况，即error打印code=1003的情况，当时找了很多资料，后来尝试了一下在出现DNS劫持的情况下，更改url替换成ip重新访问服务器，之后再没有出现过code=1003的情况了。（详情看下面代码）
staticAFHTTPSessionManager*mgr;
@implementationYFJNetWorking
//当使用这个类的时候，调用这个初始化方法
+ (void)initialize
{
//初始化会话管理者
mgr= [AFHTTPSessionManagermanager];
mgr.responseSerializer= [AFJSONResponseSerializerserializer];
//设置afn可以接受text/html类型数据
mgr.responseSerializer.acceptableContentTypes= [NSSetsetWithObjects:@"application/json",@"text/json",@"text/javascript",@"text/html",nil]
}
/** GET请求*/
+ (void)GET:(NSString*)url parameters:(id)parameters success:(void(^)(id))success failure:(void(^)(NSError*))failure
{
/*
AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];
NSMutableDictionary*mutableDic = [NSMutableDictionarydictionaryWithDictionary:parameters];
[mutableDicsetValue:YFJTokenforKey:@"app_token"]; //使用appToken作为验证，每次访问网络请求时将appToken加入到请求参数当中
[mgrGET:urlparameters:mutableDicprogress:^(NSProgress*_NonnulldownloadProgress) {
}success:^(NSURLSessionDataTask*_Nonnulltask,id_NullableresponseObject) {
success(responseObject);
}failure:^(NSURLSessionDataTask*_Nullabletask,NSError*_Nonnullerror) {
if(error.code== -1003) { //当出现dns劫持的情况，更换ip重新访问服务器
NSString*strUrl = [urlstringByReplacingOccurrencesOfString:@"url"withString:@"ip"];//将你的url更换成你的ip使用afn访问
AFHTTPSessionManager*ipSession = [AFHTTPSessionManagermanager]; //这边需要重新定义session，避免重复调用(虽然不知道会出现什么情况。。。但是我还是重新写了一个sessionManager)
ipSession.responseSerializer= [AFJSONResponseSerializerserializer];
//设置afn可以接受text/html类型数据
ipSession.responseSerializer.acceptableContentTypes= [NSSetsetWithObjects:@"application/json",@"text/json",@"text/javascript",@"text/html",nil];
[ipSessionGET:strUrlparameters:mutableDicprogress:^(NSProgress*_NonnulldownloadProgress) {
//nil
}success:^(NSURLSessionDataTask*_Nonnulltask,id_NullableresponseObject) {
// ip请求成功,处理数据
success(responseObject);
}failure:^(NSURLSessionDataTask*_Nullabletask,NSError*_Nonnullerror) {
// ip请求失败
failure(error);
}];
}else
{
failure(error);
}
}];
}
/** POST请求*/
+ (void)POST:(NSString*)url parameters:(id)parameters success:(void(^)(id))success failure:(void(^)(NSError*))failure
{
/*
NSString *md5 = [NSString MD5WihtSting:contentString];
NSString *sign = [NSString stringWithFormat:@"%@ewEIvdksd",md5];
NSString *md5_sign = [NSString MD5WihtSting:sign];
NSString *urlStr = [NSString stringWithFormat:@"%@?service=%@&sign=%@",SERVERURL,url,md5_sign];
*/
NSMutableDictionary*mutableDic = [NSMutableDictionarydictionaryWithDictionary:parameters];
/*
NSMutableString *contentString=[NSMutableString string];
NSArray *keys = [mutableDic allKeys];
//按字母顺序排序
NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
return [obj1 compare:obj2 options:NSNumericSearch];
}];
//拼接字符串
for (NSInteger i = 1; i <= sortedArray.count; i ++) {
NSString *categoryId = [sortedArray objectAtIndex:i - 1];
[contentString appendFormat:@"%@", [sortedArray valueForKey:categoryId]];
}
CocoaSecurityResult *sha256 = [CocoaSecurity sha256:contentString];
NSString *md5 = sha256.hexLower;
NSString *sign = [NSString stringWithFormat:@"%@ewEIvdksd",md5];
CocoaSecurityResult *md5Sign = [CocoaSecurity sha256:sign];
NSString *md5_sign = md5Sign.hexLower;
NSString *urlStr = [NSString stringWithFormat:@"%@?sign=%@",url,md5_sign];
*/
[mutableDicsetValue:YFJToken forKey:@"app_token"];
[mgrPOST:urlparameters:mutableDicprogress:^(NSProgress*_NonnulluploadProgress) {
}success:^(NSURLSessionDataTask*_Nonnulltask,id_NullableresponseObject) {
success(responseObject);
}failure:^(NSURLSessionDataTask*_Nullabletask,NSError*_Nonnullerror) {
failure(error);
}];
}