一、早前的几个网络框架
1、ASI框架: HTTP终结者.很牛, 但是有BUG, 已经停止更新.
2、MKNetworkKit (印度人写的).
3、AFN一直还在更新.
AFNetworking的出现:MAC/iOS设计的一套网络框架.(为了简化网络操作)
*AFN专注与网络数据传输,以及网络中多线程的处理.
二、AFNetworking的使用
1、AFN特性 :
*登录传参数时,传递字典即可.(键名为参数名,键值为参数值).
*自动到子线程中执行,执行完后返回主线程.
*返回的结果自动序列化为NSDictionary.
2、使用AFN注意 :
*AFHTTPRequestOperationManager封装了通过HTTP协议与Web应用程序进行通讯的常用方法.(这个实例化的时候不是单例, 因为没有shared字)
*包括创建请求/响应序列化/网络监控/数据安全.
*方法等都是以AF开头的.
3、AFN能做的 (网络中的都涵盖了):
*GET/POST/PUT/DELETE/HEAD请求.
*JSON数据解析/Plist数据解析.(不支持XML数据解析)
*POSTJSON.
*上传/下载.
4、使用步骤 : (可参考说明文档)
1.首先需要实例化一个请求管理器AFHTTPRequestOperationManager.
2.设置请求的数据格式:默认是二进制.(可改)
*AFHTTPRequestSerializer(二进制)
*AFJSONRequestSerializer(JSON)
*AFPropertyListRequestSerializer(Plist)
3.设置响应的数据格式:默认是JSON.(可改)
*AFHTTPResponseSerializer(二进制)
*AFJSONResponseSerializer(JSON)
*AFPropertyListResponseSerializer(Plist)
*AFXMLParserResponseSerializer(XML)
*AFImageResponseSerializer(Image)
*AFCompoundResponseSerializer(组合的)
4.如果响应者的MIMEType不正确,就要修改acceptableContentTypes.
5.调用方法,发送响应的请求(GET/POST...).
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:@"http://localhost/login.php" 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:@"http://localhost/login.php" 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:@"http://localhost/videos.json" 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:@"http://localhost/videos.xml" 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:@"http://localhost/videos.plist" 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:@"http://localhost/postjson.php" parameters:dict success: ^(AFHTTPRequestOperation *operation, id responseObject) {
- // NSLog(@"postjson--> %@", responseObject); //这样显示JSON的话需要设置text/plain
- NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
- NSLog(@"%@",result);
- } failure: ^(AFHTTPRequestOperation *operation, NSError *error) {
- NSLog(@"%@", error);
- }];
- }