众所周知，苹果搞的一套框架NSContention发送请求与接收请求的方式十分繁琐。操作起来很不方便。不仅要做区分各种请求设置各种不同的参数，而且还要经常在多线程里操作，同时还要对请求与返回的数据做各种序列化的操作，同时还要考虑请求数据的安全等一堆问题。
一、早前的几个网络框架
但是有
AFNetworking的出现：
地址：https://github.com/AFNetworking/AFNetworking
二、AFNetworking的使用
因为没有
*AFJSONRequestSerializer(JSON)
*AFPropertyListRequestSerializer(Plist)
*AFJSONResponseSerializer(JSON)
*AFPropertyListResponseSerializer(Plist)
*AFXMLParserResponseSerializer(XML)
*AFImageResponseSerializer(Image)
关于修改AFN源码：通常序列化时做对text/plan等的支持时，可以一劳永逸的修改源代码，在acceptableContentTypes中修改即可。
AFN进行GET、POST登录：
#pragma mark – get/post登录- (void)getLogin {//1.管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.设置登录参数NSDictionary *dict = @{ @"username":@"xn", @"password":@"123" };//3.请求[manager GET:@"" parameters:dict success: ^(AFHTTPRequestOperation *operation, id responseObject) {NSLog(@"GET –> %@, %@", responseObject, [NSThread currentThread]); //自动返回主线程} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}/** * 和上面的GET用法完全一样, 只有一个POST参数不一样 */- (void)postLogin {//1.管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.设置登录参数NSDictionary *dict = @{ @"username":@"xn", @"password":@"123" };//3.请求[manager POST:@"" parameters:dict success: ^(AFHTTPRequestOperation *operation, id responseObject) {NSLog(@"POST –> %@, %@", responseObject, [NSThread currentThread]); //自动返回主线程} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}AFN进行网络数据解析，获取Plist，JSON，XML（AFN不支持自动解析XML，有专门的框架去做，如SAX，PULL，，KissXML等）#pragma mark – get 数据解析- (void)getJSON {//1.请求管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.发起请求[manager GET:@"" parameters:nil success: ^(AFHTTPRequestOperation *operation, id responseObject) {NSLog(@"%@", responseObject);} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}/** * 不支持XML数据解析 */- (void)getXML {//1.管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.设置返回数据类型manager.responseSerializer = [AFXMLParserResponseSerializer serializer]; //先实例化一下//3.发起请求[manager GET:@"" parameters:nil success: ^(AFHTTPRequestOperation *operation, id responseObject) {NSLog(@"%@", responseObject);} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}- (void)getPlist {//1.管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.设置response类型manager.responseSerializer = [AFPropertyListResponseSerializer serializer]; //是Response, 别写成request了. 修改为plist类型.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/plain"]; //这个可以直接往框架里面修改.//3.请求[manager GET:@"" parameters:nil success: ^(AFHTTPRequestOperation *operation, id responseObject) {NSLog(@"%@", responseObject);} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}用AFN来POST JSON数据，上传、下载等。（上传、下载主页说明上有https://github.com/AFNetworking/AFNetworking）#pragma mark – post json数据与上传文件等- (void)postJSON {//1.管理器AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];//2.设定类型. (这里要设置request-response的类型)manager.requestSerializer = [AFJSONRequestSerializer serializer];manager.responseSerializer = [AFHTTPResponseSerializer serializer]; //这个决定了下面responseObject返回的类型// manager.responseSerializer = [AFJSONResponseSerializer serializer];//manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/plain"];//2.设置登录参数NSDictionary *dict = @{ @"username":@"xn", @"password":@"123" };//3.发送请求[manager POST:@"" parameters:dict success: ^(AFHTTPRequestOperation *operation, id responseObject) {//NSLog(@"postjson–> %@", responseObject); //这样显示JSON的话需要设置text/plainNSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];NSLog(@"%@",result);} failure: ^(AFHTTPRequestOperation *operation, NSError *error) {NSLog(@"%@", error);}];}
转载请注明出处：
业精于勤，荒于嬉；行成于思，毁于随。
