如何将数据保存在JSON字典中并发送Web服务后调用？
我有两个文本字段称为密码字段，我将其保存在一个名为“Firststring”的string中。
我的疑问是如何将string值分配给我的jsonDict，并使Web服务后调用？
你是正确的方式，你可以直接添加你的string使用密钥字典
NSMutableDictionary *jsonDict = [[NSMutableDictionary alloc] init]; [jsonDict setObject:@"staticname" forKey:@"albert"]; [jsonDict setObject:Firststring forKey:@"password"]; 更新1
NSMutableURLRequest *req = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"YOUR URL HERE"]]; [req setHTTPMethod:@"POST"]; NSError *error = nil; NSMutableDictionary *jsonDict = [[NSMutableDictionary alloc] init]; [jsonDict setObject:@"staticname" forKey:@"albert"]; [jsonDict setObject:Firststring forKey:@"password"]; NSData *data = [NSJSONSerialization dataWithJSONObject:jsonDict options:kNilOptions error:&error]; NSString *postLength = [NSString stringWithFormat:@"%d",[data length]]; [req addValue:postLength forHTTPHeaderField:@"Content-Length"]; [req setHTTPBody:postData]; NSURLSession *session = [NSURLSession sharedSession]; NSURLSessionDataTask *task = [session dataTaskWithRequest:req completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { // Do something NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; NSLog(@"%@", json); }]; [task resume];
select-2
// 1 NSURL *url = [NSURL URLWithString:@"YOUR_WEBSERVICE_URL"]; NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration]; NSURLSession *session = [NSURLSession sessionWithConfiguration:config]; // 2 NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url]; request.HTTPMethod = @"POST"; // 3 NSMutableDictionary *jsonDict = [[NSMutableDictionary alloc] init]; [jsonDict setObject:@"staticname" forKey:@"albert"]; [jsonDict setObject:Firststring forKey:@"password"]; NSError *error = nil; NSData *data = [NSJSONSerialization dataWithJSONObject:jsonDict options:kNilOptions error:&error]; if (!error) { // 4 NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:data completionHandler:^(NSData *data,NSURLResponse *response,NSError *error) { // Handle response here // handle response NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; NSLog(@"%@", json); }]; // 5 [uploadTask resume];
注意 – 如果你想在iOS 9中点击服务器，你需要在你的.PList中添加NSAllowsArbitraryLoads ，例如： See this
使用以下方法发布数据。
-(IBAction)login:(id)sender{ NSMutableDictionary *dict = [[NSMutableDictionary alloc] init]; [dict setObject:self.txtUsername.text forKey:@"txt_user_email"]; [dict setObject:self.txtPassword.text forKey:@"txt_user_pass"]; [self postMethodWithDict:dict andURL:@"http:your API url here" ]; } -(void) postMethodWithDict:(NSDictionary *)dict andURL:(NSString *)url{ NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]]; [request setHTTPMethod:@"POST"]; [request setTimeoutInterval:30]; NSString *boundary = [NSString stringWithFormat:@"14737809831466499882746641449"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; [request setValue:contentType forHTTPHeaderField:@"Content-Type"]; NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"--%@\\r\\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; NSLog(@"sending data %@", dict); // additional method to call in between NSData *data = [self createFormData:dict withBoundary:boundary]; [body appendData:[[NSString stringWithFormat:@"\\r\\n--%@\\r\\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:data]; [request setHTTPBody:body]; NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self startImmediately:YES]; if(conn) { // connection success NSLog(@"connection success"); } else { // deal with error NSLog(@"error occured"); } } // linked method - (NSData*)createFormData:(NSDictionary*)myDictionary withBoundary:(NSString*)myBounds { NSMutableData *myReturn = [[NSMutableData alloc] init]; NSArray *formKeys = [myDictionary allKeys]; for (int i = 0; i < [formKeys count]; i++) { [myReturn appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",myBounds] dataUsingEncoding:NSASCIIStringEncoding]]; [myReturn appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n%@",[formKeys objectAtIndex:i], [myDictionary valueForKey:[formKeys objectAtIndex:i]]] dataUsingEncoding:NSASCIIStringEncoding]]; } return myReturn; }
使用NSURLConnection委托方法来获取您的API的所有响应
喜欢这个：
NSDictionary *jsonDict = @{@"staticname":@"albert", @"password":password};