网络交互，获取数据

本人不才，自己封装了一个方法，使用本方法 只需传入一个json拼接字符串，一个url字符串，将会获得一个NSDictionary字典数据

#import <Foundation/Foundation.h>

#import "JSON.h"

@interface HttpServer : NSObject

{

NSString *urlString;

NSString *jsonString;

}

-(NSDictionary *)JSONString:(NSString *)jsonString URLString:(NSString *)urlString;

@end

#import "HttpServer.h"

@implementation HttpServer

-(NSDictionary *)JSONString:(NSString *)jsonString URLString:(NSString *)urlString{

NSURL *url = [NSURL URLWithString:urlString];

NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];

[urlRequest setTimeoutInterval:30.0f];

[urlRequest setHTTPMethod:@"POST"];

[urlRequest setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];

NSOperationQueue *queue = [[NSOperationQueue alloc]init];

NSURLResponse *response = nil;

NSError *error = nil;

NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];

NSString *result = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];

NSDictionary *dictionary = [result JSONValue];

return dictionary;

}

@end