网络请求数据解析
重要！！！！
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&connectionError];
NSLog(@"%@", dic);
}];
同步
// **********************************************************
// GET请求
// 创建一个URL
NSURL *url = [NSURL URLWithString:strURLEncode];
// 创建一个请求
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSURLResponse *response = nil;
NSError *error = nil;
// 第一个参数:创建的请求
// 第二个参数:返回的答复
// 第三个参数:错误信息
// 发送请求
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
// 第一种
NSMutableDictionary *dataDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
// 第二种
// 需要引JSONKit.h(第三方)
NSMutableDictionary *dataDic = [data objectFromJSONData];
// **********************************************************
// POST请求
NSString *strURL = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
NSURL *url = [NSURL URLWithString:strURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
// 设置请求的方式,默认是GET请求
[request setHTTPMethod:@"POST"];
NSString *bodyStr = @"date=20131129&startRecord=5&len=5&udid=1234567890&terminalType=Iphone&cid=215";
// 把字符串转换成NSData类型
NSData *bodyData = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
// 把bodyData添加到request中
[request setHTTPBody:bodyData];
NSURLResponse *response = nil;
NSError *error = nil;
// 发送请求
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
// 解析数据
NSMutableDictionary *dataDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
异步
NSLog(@"GET异步请求");
NSString *strURL = @"http://img4.duitang.com/uploads/item/201207/28/20120728105310_jvAjW.thumb.600_0.jpeg";
NSURL *url = [NSURL URLWithString:strURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[NSURLConnection connectionWithRequest:request delegate:self];
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
// 初始化,接受数据的容器
self.data = [NSMutableData data];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
// appendData是累加的意思
[self.data appendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
// 数据请求结束
self.myImageView.image = [UIImage imageWithData:self.data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
NSLog(@"%@", error);
}
封装
Block block = ^(id result) {
NSMutableDictionary *dic = result;
self.arr = dic[@"events"];
[self.tblView reloadData];
};
[NetWorkingTool netWorkingToolStr:strURL block:block];
/**********************/
+ (void)netWorkingToolStr:(NSString *)strURL block:(Block)myBlock {
NSString *strURLEncode = [strURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:strURLEncode];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&connectionError];
myBlock(result);
}];
}