很久没有更新博客了，所以分享一个。

@protocol HttpListenerDelegate;@interface BaseHttp : NSObject{}@property (nonatomic, weak) id
     
       delegate;@property (nonatomic, M_STRONG) NSURLConnection *connect;@property (nonatomic, M_STRONG) NSMutableData *receiveData;@property (nonatomic, M_STRONG) NSString *httpUrl;//设置当前服务的唯一标示，默认为当前的URL@property (nonatomic, M_STRONG) NSString *identify;- (id)initWithHttpUrl:(NSString *)url;//开始调用远程服务- (void)execute;- (void)execute:(id)param;//接收到服务器回应的时候调用此方法- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;//接收到服务器传输数据的时候调用，此方法根据数据大小执行若干次- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;//数据传完之后调用此方法- (void)connectionDidFinishLoading:(NSURLConnection *)connection;//网络请求过程中，出现任何错误（断网，连接超时等）会进入此方法- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error;@end@protocol HttpListenerDelegate 
      
       @optional//接收到服务器回应的时候调用此方法- (void)didReceiveResponse:(NSURLResponse *)response identify:(NSString *)identify;- (void)didReceiveData:(NSData *)data identify:(NSString *)identify;//后台加载数据完成- (void)didFinishLoading:(NSMutableData*)receiveData identify:(NSString *)identify;//网络请求异常- (void)didFailWithError:(NSError *)error identify:(NSString *)identify;@end
      
     

　　

////  BaseHttp.m//  myb-ios////  Created by warrior gao on 13-6-7.//  Copyright (c) 2013年 51myb. All rights reserved.//#import "BaseHttp.h"@implementation BaseHttp - (id)initWithHttpUrl:(NSString *)url{    self = [self init];    _httpUrl = [NSString stringWithFormat: @"%@%@",SERVER_URL, url];    _identify = url;    return self;}-(void)setHttpUrl:(NSString *)httpUrl{    _httpUrl = httpUrl;    if(!(_identify))        _identify = httpUrl;}//开始调用远程服务- (void)execute{    [self execute:@""];}- (void)execute:(id)param{    if(DEBUG) {        NSLog(@"开始请求:%@", _httpUrl);    }        //第一步，创建URL    NSURL *url = [NSURL URLWithString:_httpUrl];    //第二步，创建请求    NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:DEFAULT_HTTP_TIMEOUT];    [request setHTTPMethod:@"POST"];//设置请求方式为POST，默认为GET    [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];    [request addValue:HTTP_HEADER_VALUE forHTTPHeaderField:HTTP_HEADER_KEY];        NSData *bodyData = nil;    if([param isKindOfClass:[NSString class]]){        bodyData = [param dataUsingEncoding:NSUTF8StringEncoding];    } else if ([param isKindOfClass:[NSData class]]){        bodyData = param;    } else if ([param isKindOfClass:[NSNumber class]]) {        bodyData = [[param stringValue] dataUsingEncoding:NSUTF8StringEncoding];    }        [request setHTTPBody:bodyData];            //第三步，连接服务器        _connect = [[NSURLConnection alloc] initWithRequest:request delegate:self];    if(_connect){        _receiveData = [NSMutableData data];    }}//接收到服务器回应的时候调用此方法- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    [_receiveData setLength:0];    if([_delegate respondsToSelector:@selector(didReceiveResponse:identify:)])        [_delegate didReceiveResponse:response identify:_identify];}//接收到服务器传输数据的时候调用，此方法根据数据大小执行若干次-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    [_receiveData appendData:data];    if([_delegate respondsToSelector:@selector(didReceiveData:identify:)])        [_delegate didReceiveData:data identify:_identify];}//数据传完之后调用此方法-(void)connectionDidFinishLoading:(NSURLConnection *)connection{    if(DEBUG){        NSLog(@"请求后台数据完成---:%@",_identify);    }        if(DEBUG){        NSString *receiveStr = [[NSString alloc] initWithData:_receiveData encoding:NSUTF8StringEncoding];        NSLog(@"%@",receiveStr);    }        if([_delegate respondsToSelector:@selector(didFinishLoading:identify:)])        [_delegate didFinishLoading:_receiveData identify:_identify];}//网络请求过程中，出现任何错误（断网，连接超时等）会进入此方法- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    if(DEBUG){         NSLog(@"%@",[error localizedDescription]);    }       if([_delegate respondsToSelector:@selector(didFailWithError:identify:)])        [_delegate didFailWithError:error identify:_identify];    else {        [AlertViewHelper alertMessage:HTTP_CONNECT_ERROR];    }}@end