IOS的一些原生请求

现在AFNetworking请求是很方便的。不过最近在做一个SDK。其实在sdk里用第三方库也是很正常的。比如极光的SDK就用了AF。只要告诉别人就行。避免重复引入。

不过这样也有一个问题，比如你用了2.0的版本。别人用了3.0的版本。这种情况其实很有可能发生，因为通常别人项目用的库是比较新的，而别人引入的一堆SDK，可能很久都不更新了。

假如3.0版本中把2.0的一个方法去掉了。这样sdk就报错了。虽然通常是会兼容，但也不排除。所以我在我的SDK里没有用到第三方库。都是用的ios原生网路请求。大部分用框架后，很多原生的东西就不再记得了。记录下：

1.先来看post请求：

//获取验证码 post ok
- (void)getSmsCodeWithPhone:(NSString *) phone{
    //1.确定请求路径
    NSString *apiUrl = [WkUtils getSmsCodeUrl];
    NSLog(@"获取验证码的Url路径是： %@,传递的参数phone= %@",apiUrl,phone);
    NSURL *url = [NSURL URLWithString:apiUrl];
    //2.创建请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //2.1更改请求方法
    request.HTTPMethod = @"POST";
    //2.2设置请求体
    NSString *bodyStr = [NSString stringWithFormat:@"type=1&phone=%@",phone];
    request.HTTPBody = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
    //2.3请求超时
    request.timeoutInterval = 10;
    NSURLSession *session_post = [NSURLSession sharedSession];
    NSURLSessionDataTask *task_post = [session_post dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        if(error == nil) {
            //说明:（此处返回的数据是JSON格式的，因此使用NSJSONSerialization进行反序列化处理）
            //解析数据
            NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
            NSLog(@"获取验证码服务端返回： %@",dic);
            
            int code = [[dic objectForKey:@"code"] intValue];
            if(code == 200){
                
            } else {
                NSString *msg = [WkUtils getServercCodeStr:code];
                NSLog(@"验证码msg is %@",msg);
                [self showMyAlertWithContent:msg];
            }
            
        }else{
            NSLog(@"出错");
            [self showMyAlertWithContent:@"获取验证码出错"];
        }
    }];
    [task_post resume];
}

　　另外一个就是上传文件的，包括上传图片，这个功能经常用到，比如换头像什么的。

- (void)originalUploadFileWithImgName:(NSString *)imgName andImgData:(NSData *)imgData{
    NSDictionary *params = @{@"address"     : @"xxxx",
                             @"userName"    : @"FlyElephant"};
    
//    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"jpg"];
    NSString *boundary = [self generateBoundaryString];
    
    // 请求的Url
    NSString *apiUrl = [WkUtils getUploadPicUrl];
    NSLog(@"上传统头像Url路径是： %@",apiUrl);
    NSURL *url = [NSURL URLWithString:apiUrl];
    
    
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
    [request setHTTPMethod:@"POST"];
    
    // 设置ContentType
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
    [request setValue:contentType forHTTPHeaderField: @"Content-Type"];
    
//    NSString *fieldName = [@"CustomFile"];
    NSData *httpBody = [self createBodyWithBoundary:boundary parameters:params imgName:imgName andImgData:imgData];
    
    NSURLSessionTask *task = [[NSURLSession sharedSession] uploadTaskWithRequest:request fromData:httpBody completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        if (error) {
            NSLog(@"error = %@", error);
            return;
        }
        //解析数据
        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
        NSLog(@"上传文件，服务端返回： %@",dic);
        NSString *msg = [dic objectForKey:@"msg"] ;
        
        int code = [[dic objectForKey:@"code"] intValue];
        if(code == 200){
            self.picUrl = [dic objectForKey:@"data"];
            NSLog(@"picUrl is %@",self.picUrl);
        } else {
            NSLog(@"msg is %@",msg);
        }
        
        
    }];
    [task resume];
}

- (NSData *)createBodyWithBoundary:(NSString *)boundary
                        parameters:(NSDictionary *)parameters
                             imgName:(NSString *)imgName
                            andImgData:(NSData *) imgData{
    NSMutableData *httpBody = [NSMutableData data];
    
    // 文本参数
    [parameters enumerateKeysAndObjectsUsingBlock:^(NSString *parameterKey, NSString *parameterValue, BOOL *stop) {
        [httpBody appendData:[[NSString stringWithFormat:@"--%@
", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name="%@"

", parameterKey] dataUsingEncoding:NSUTF8StringEncoding]];
        [httpBody appendData:[[NSString stringWithFormat:@"%@
", parameterValue] dataUsingEncoding:NSUTF8StringEncoding]];
    }];
    
    [httpBody appendData:[[NSString stringWithFormat:@"--%@
", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name="%@"; filename="%@"
", @"file", imgName] dataUsingEncoding:NSUTF8StringEncoding]];
    [httpBody appendData:[[NSString stringWithFormat:@"Content-Type: %@

", @"multipart/form-data"] dataUsingEncoding:NSUTF8StringEncoding]];
//     [httpBody appendFormat:@"Content-Type: application/octet-stream

"];
    [httpBody appendData:imgData];
    [httpBody appendData:[@"
" dataUsingEncoding:NSUTF8StringEncoding]];
   
    
    [httpBody appendData:[[NSString stringWithFormat:@"--%@--
", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    
    return httpBody;
}


- (NSString *)generateBoundaryString {
    return [NSString stringWithFormat:@"Boundary-%@", [[NSUUID UUID] UUIDString]];
}

　　是不是很麻烦，其实这些用afnetworking几句代码就可以搞定，哈哈哈。httpbody里面的那些具体数据就不说了，大家可以搜下iOS图片上传，网上有说，重要的就是 代表换行