老赖 封装的一个 数据 请求函数 HTTPENGINE

+ (NSData *)synchronizeDataWithURL:(NSString *)urlString withBody:(NSString *)body

{

    NSURLResponse *response = nil;

    NSError *error = nil;

    

    // 解决URL带中文发生NSURLErrorDomain Code=-1000 "错误的 URL"

    NSString *encodeUrlString = [urlString

        stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; //

    NSURL *url = [NSURL URLWithString:encodeUrlString];

    NSMutableURLRequest *request = [NSMutableURLRequest

                                    requestWithURL:url

                                    cachePolicy:NSURLRequestUseProtocolCachePolicy

                                    timeoutInterval:30.0];

    if (body) {

        NSData *bodyData = [body dataUsingEncoding:NSUTF8StringEncoding

                              allowLossyConversion:YES];

        NSString *dataLength = [NSString stringWithFormat:@"%d", [bodyData length]];

        [request setHTTPBody:bodyData];

        [request setValue:dataLength forHTTPHeaderField:@"Content-Length"];

        [request setValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

    }

    

    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

    NSData *data = [NSURLConnection sendSynchronousRequest:request

                                         returningResponse:&response

                                                     error:&error];

    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

    NSLog(@"error:%@\nresponse:%@", error, response);

    NSLog(@"reponse string now:%@",

          [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease]);

    

    return data;

}