NSURLSessionDataTask网络请求（POST）
- (void)NSURLSessionNetworkRequest
{
NSURL *nsurl = [NSURL URLWithString:@"www.baidu.com"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:nsurl];
//如果想要设置网络超时的时间的话，可以使用下面的方法：
//NSMutableURLRequest *mutableRequest=[NSMutableURLRequest requestWithURL:nsurl cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
//设置请求类型
request.HTTPMethod = @"POST";
//将需要的信息放入请求头
// [request setValue:@"xxx" forHTTPHeaderField:@"Authorization"];//token
// [request setValue:@"xxx" forHTTPHeaderField:@"Gis-Lng"];//坐标 lng
// [request setValue:@"xxx" forHTTPHeaderField:@"Gis-Lat"];//坐标 lat
// [request setValue:@"xxx" forHTTPHeaderField:@"Version"];//版本
// NSLog(@"POST-Header:%@",request.allHTTPHeaderFields);
//把参数放到请求体内
NSString *postStr = [self parseParams:params];
request.HTTPBody = [postStr dataUsingEncoding:NSUTF8StringEncoding];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if (error) { //请求失败
NSLog(@"请求失败");
} else { //请求成功
NSDictionary * responseDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSLog(@"%@", responseDict);
}
}];
[dataTask resume]; //开始请求
}
//重新封装参数 加入app相关信息
- (NSString *)parseParams:(NSDictionary *)params
{
NSMutableDictionary *parameters = [[NSMutableDictionary alloc] initWithDictionary:params];
NSLog(@"请求参数:%@",parameters);
NSString *keyValueFormat;
NSMutableString *result = [NSMutableString new];
//实例化一个key枚举器用来存放dictionary的key
//加密处理 将所有参数加密后结果当做参数传递
//parameters = @{@"i":@"加密结果 抽空加入"};
NSEnumerator *keyEnum = [parameters keyEnumerator];
id key;
while (key = [keyEnum nextObject]) {
keyValueFormat = [NSString stringWithFormat:@"%@=%@&", key, [params valueForKey:key]];
[result appendString:keyValueFormat];
}
return result;
}
NSURLConnection网络请求
- (void)NSURLConnectionNetworkRequest {
/*
// 1.根据网址初始化OC字符串对象
NSString *urlStr = @"www.baidu.com";
// 2.创建NSURL对象
NSURL *url = [NSURL URLWithString:urlStr];
// 3.创建请求
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
// 4.创建参数字符串对象
NSString *parmStr = @"grade_id=10&class_id=209&student_id=7";
// 5.将字符串转为NSData对象
NSData *pramData = [parmStr dataUsingEncoding:NSUTF8StringEncoding];
// 6.设置请求体
[request setHTTPBody:pramData];
// 7.设置请求方式
[request setHTTPMethod:@"POST"];
// 创建同步链接
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
*/
// POST请求
NSString *urlString = @"www.baidu.com";
//创建url对象
NSURL *url = [NSURL URLWithString:urlString];
//创建请求
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10];
//创建参数字符串对象
NSString *parmStr = @"grade_id=10&class_id=209&student_id=7";
//将字符串转换为NSData对象
NSData *data = [parmStr dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:data];
[request setHTTPMethod:@"POST"];
//创建异步连接（形式二）
[NSURLConnection connectionWithRequest:request delegate:self];
}
//代理方法 服务器接收到请求时
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
}
// 当收到服务器返回的数据时触发, 返回的可能是资源片段
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
NSLog(@"%ld == %@", [data length], data);
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSLog(@"%@", dic);
}
// 当服务器返回所有数据时触发, 数据返回完毕
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"返回完成");
}
// 请求数据失败时触发
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(@"%s", __FUNCTION__);
}
