最近遇到一个需求：要求从客户端传到服务器的参数是json字符串，于是我本能的用pod装了afn然后进行了request和response Serialization的相关设置
AFHTTPSessionManager *netMnager = [AFHTTPSessionManager manager];
netMnager.requestSerializer = [AFHTTPRequestSerializer serializer];
netMnager.responseSerializer = [AFHTTPResponseSerializer serializer];
[netMnager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
NSDictionary *dicJson =@{@"packetHead": @{
@"serviceCode":@"3005",
@"token":@"fdsfdsfsfsf8f8dsfsdfsfsfsfsf0dsf0sdf",
@"sign":@"FHGHGFHFGHFGHGFHGFHGFHFGHF"},
@"packetBody": @{
@"abc":@"你好啊"
}
};
[netMnager POST:@"" parameters:dicJson progress:^(NSProgress * _Nonnull uploadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
在我看来一切都是那么的稀疏平常，可是问题就来了，服务器获取到的数据竟然不是json字符串,而是url编码的格式，也就是&key=value的形式，于是我蒙蔽了，好久没遇到过这种问题了，于是请教了下百度和谷歌，最后研究afn源码发现这是afn设置的原因或者说afn内置的原因
简单的解析下上述代码的运行过程：
1.调用POST方法
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2.调用底层URLSESSIONDATATASK
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3.创建request对象
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4.对request对象进行序列化查询
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5.调用对应的request方法
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6.AFHttpRequest中的方法执行，其中当没有设置序列化方法时，会走默认的序列化方法，在此方法中最后序列化成为urlencode编码格式，问题也出在此处
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最后的优化
第一种方法，设置AFJSONRequetSerializer，此方法中参数以json对象的二进制形式传向后台服务器
AFHTTPSessionManager *netMnager = [AFHTTPSessionManager manager];
// netMnager.requestSerializer = [AFHTTPRequestSerializer serializer];
netMnager.requestSerializer = [AFJSONRequestSerializer serializer];
netMnager.responseSerializer = [AFHTTPResponseSerializer serializer];
// [netMnager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
// [netMnager.requestSerializer setQueryStringSerializationWithBlock:^NSString * _Nonnull(NSURLRequest * _Nonnull request, id _Nonnull parameters, NSError * _Nullable __autoreleasing * _Nullable error) {
// NSData *data = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:nil];
//
// NSString *jsonstr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
// NSLog(@"--- %@",jsonstr);
// return jsonstr;
// }];
NSDictionary *dicJson =@{@"packetHead": @{
@"serviceCode":@"3005",
@"token":@"fdsfdsfsfsf8f8dsfsdfsfsfsfsf0dsf0sdf",
@"sign":@"FHGHGFHFGHFGHGFHGFHGFHFGHF"},
@"packetBody": @{
@"pageType":@"你好啊"
}
};
[netMnager POST:@"http://192.168.1.7:8888/testgateway" parameters:dicJson progress:^(NSProgress * _Nonnull uploadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"--- %@",[NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil]);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"error = %@",error.userInfo);
}];
image.png
第二种，配置request的序列化查询方法，该方法参数以json字符串的二进制流形式传向服务器
AFHTTPSessionManager *netMnager = [AFHTTPSessionManager manager];
netMnager.requestSerializer = [AFHTTPRequestSerializer serializer];
netMnager.responseSerializer = [AFHTTPResponseSerializer serializer];
[netMnager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[netMnager.requestSerializer setQueryStringSerializationWithBlock:^NSString * _Nonnull(NSURLRequest * _Nonnull request, id _Nonnull parameters, NSError * _Nullable __autoreleasing * _Nullable error) {
NSData *data = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:nil];
NSString *jsonstr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"--- %@",jsonstr);
return jsonstr;
}];
NSDictionary *dicJson =@{@"packetHead": @{
@"serviceCode":@"3005",
@"token":@"fdsfdsfsfsf8f8dsfsdfsfsfsfsf0dsf0sdf",
@"sign":@"FHGHGFHFGHFGHGFHGFHGFHFGHF"},
@"packetBody": @{
@"pageType":@"你好啊"
}
};
[netMnager POST:@"http://192.168.1.7:8888/testgateway" parameters:dicJson progress:^(NSProgress * _Nonnull uploadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"--- %@",[NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil]);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"error = %@",error.userInfo);
}];