相关疑难解决方法(0)

我是Objective-c的新手,我开始在最近的请求/响应中投入大量精力.我有一个可以调用url(通过http GET)并解析返回的json的工作示例.

这个工作的例子如下

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    [responseData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [responseData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
  NSLog([NSString stringWithFormat:@"Connection failed: %@", [error description]]);
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    [connection release];
  //do something with the json that comes back ... (the fun part)
}

- (void)viewDidLoad
{
  [self searchForStuff:@"iPhone"];
}

-(void)searchForStuff:(NSString *)text
{
  responseData = [[NSMutableData data] retain];
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.whatever.com/json"]];
    [[NSURLConnection alloc] initWithRequest:request delegate:self];
}

我的第一个问题是 - …

我有一个需要登录的php网页(用户ID和密码).我让用户在应用程序中输入信息就好......但我需要一个关于如何对网站发出POST请求的示例.支持网站上的苹果示例相当复杂,显示图片上传..我应该更简单..我只想发布2行文字..任何人都有任何好的例子？

亚历克斯

我必须动态生成一个json字符串,并需要发送到服务器.是否有人知道如何使用它NSJSONSerialization.下面是我的字符串

{
    "surveyid": "Survey1",
    "responsetime": "dd/mm/yyyy hh:mm:ss",
    "location": null,
    "surveyresponses": [
        {
            "questionid": "111",
            "responses": [
                {
                    "response": "Good",
                    "optionid": 1,
                    "language": "en"
                }
            ]
        },
        {
            "questionid": "112",
            "responses": [
                {
                    "response": "bad",
                    "optionid": 2,
                    "language": "en"
                }
            ]
        }

    ]
}

如何创建一个string.json,如果有人知道请帮助.提前致谢.