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在iOS下开发一直是用ASIHTTPRequest库，ASIHTTPRequest已经停止更新，看了这个文章http://www.oschina.net/news/61416/github-top-100-objective-c-projects （原文https://github.com/Aufree/trip-to-iOS/blob/master/Top-100.md）的AFNetworking库，感觉还不错。
AFNetworking库的地址是
https://github.com/AFNetworking/AFNetworking
在主页可以看到，AFNetworking库的使用很简单
get请求
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil
success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
post请求
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo": @"bar"};
[manager POST:@"http://example.com/resources.json" parameters:parameters
success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
还有很多使用方法，可以直接到GitHub主页上看https://github.com/AFNetworking/AFNetworking
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原文地址：http://my.oschina.net/kevinvane/blog/399057
