get请求1：
NSURL*url = [NSURLURLWithString:@" "];
NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:1 timeoutInterval:15]; [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { // if (!connectionError) { NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; //判断服务器返回是否成功 if (httpResponse.statusCode == 200) { //处理服务器返回的数据(解析json) //把json形式的字符串 解析成对象 // NSJSONReadingMutableContainers = (1UL << 0), //返回的数组或字典是可变的 // NSJSONReadingMutableLeaves = (1UL << 1), //设置json中的字符串是可变的 .但是ios7之后.就不起作用了 //以上两种方式要求.返回的数据必须是json形式的字符串,否则解析会出错 // NSJSONReadingAllowFragments = (1UL << 2) //不要求数据是json形式的字符串 // 解析json返回的对象,只有两种类型 字典 数组 NSError *error= nil; id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error]; //判断解析json的时候是否出错 if (!error) { NSLog(@"%@",json); // NSLog(@"%@ %@",json[@"message"],[json[@"message"] class]); }else{ NSLog(@"解析json出错:%@",error); } }else{ NSLog(@"服务器内部错误"); } }else{ NSLog(@"发送请求错误 %@",connectionError); } }];
}
get请求2：（请求头携带参数需要转义）
@interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //当url的字符串，有特殊内容（汉字，空格，url中的特殊符号）
NSString *name = @"abc&123";
//只会对汉字 空格进行百分号的转义
name = [name stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; //对url中的特殊符号进行转义 name = [self encodeToPercentEscapeString:name]; NSString *pwd = @"abc"; NSString *str = [NSString stringWithFormat:@"http://127.0.0.1/php/login.php?username=%@&password=%@",name,pwd]; NSURL *url = [NSURL URLWithString:str]; NSLog(@"%@",url); NSURLRequest *request = [NSURLRequest requestWithURL:url]; [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { // if (!connectionError) { NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; if (httpResponse.statusCode == 200) { // id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL]; NSLog(@"%@",json); }else{ NSLog(@"服务器内部错误"); } }else{ NSLog(@"请求错误%@",connectionError); } }]; } //进行url编码 （但是不对汉字和空格进行编码） - (NSString *)encodeToPercentEscapeString: (NSString *) input { NSString *outputStr = (NSString *) CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)input,NULL,(CFStringRef)@"!*'();:@&=+ $,/?%#[]",kCFStringEncodingUTF8)); return outputStr; } //url解码 - (NSString *)decodeFromPercentEscapeString: (NSString *) input { return [input stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ;
}
post请求：（携带参数请求体传递）
#import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; //当url的字符串，有特殊内容（汉字，空格，url中的特殊符号） NSURL *url = [NSURL URLWithString:@" "]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; //设置发送post请求 request.HTTPMethod = @"post"; //请求体 没有对url中的特殊符号转义 NSString *name = @"abc123"; //自动对汉字和空格做了百分号转义 NSString *pwd = @"abc"; NSString *strBody = [NSString stringWithFormat:@"username=%@&password=%@",name,pwd]; request.HTTPBody = [strBody dataUsingEncoding:NSUTF8StringEncoding]; [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { // if (!connectionError) { NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response; if (httpResponse.statusCode == 200) { // id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL]; NSLog(@"%@",json); }else{ NSLog(@"服务器内部错误"); } }else{ NSLog(@"请求错误%@",connectionError); } }];
}