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